FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
As amended by the Patents (Amendment) Act, 2005
&
The Patents Rules, 2003
As amended by the Patents (Amendment) Rules, 2006
COMPLETE SPECIFICATION (See section 10 and rule 13)
TITLE OF THE INVENTION
AC power diesel generator system for generating variable voltage and frequency in accordance with load conditions at customer site equipments
APPLICANTS
Mahindra & Mahindra Limited, Gateway Building, Apollo Bunder, Mumbai 400 001, Maharashtra, India, an Indian company
PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the invention and the manner in which it is
to be performed:

FIELD OF THE INVENTION
[0001] The present invention relates generally to diesel power generating systems
and more particularly, to an AC power diesel generator system generating variable voltage and frequency in accordance with load conditions at customer site equipments.
DESCRIPTION OF THE BACKGROUND ART
[0002] An AC power diesel generator set is primarily constructed of a diesel engine
that is operably connected with an alternator to generate electrical energy. Diesel power generating sets are used as emergency power supply equipments in places where continues supply of electric current is not available to run machinery and devices. Specifically, in telecom applications, diesel power generating sets are used for running mobile towers. The mobile towers are generally powered by 'Electricity Board' supply however in the absence of 'Electricity Board' supply at many sites mobile towers are powered by Battery banks. These batteries need to be charged constantly as soon as they are drained as a result of electrical energy consumption. Diesel generator sets are used to charge this Battery banks. In addition, diesel generator sets also serve to run air conditioner & other equipments available in a shelter near the Tower.
[0003] Telecom Equipment Manufacturer Association (TEMA) has suggested that the
number of telecom towers essential for providing connectivity to all areas has gone up exponentially. As per Telecom Regulatory Authority of India (TRAI) figures, the total number of telecom towers in the country at the end of 2010 was approximately 400,000. It is estimated that presently India has about 500,000 telecom towers with an average power consumption of around 3-4 kW per tower site. TEMA has also suggested that almost 60% of the power requirement of telecom towers is met through use of Diesel Generator sets (DG Sets). The electricity available at the sites across major circles varies from 7-21 hours per day. There are hundreds of sites whose dependence on DG sets is almost 100%. As per the TRAI recommendations issued in April 2011, approximately 8760 litres of diesel is consumed per year per site (assuming that on an average each site is operating for almost 8 hours on DG set), which works out to around 3.5 billion litres of diesel consumption by telecom towers alone.

[0004] One of the major drawbacks associated with the AC power diesel generator
sets is that there is no control on the fuel consumed by such diesel generator sets in accordance with the load requirements. Typically, the AC power diesel generator set that are currently installed at all telecom towers are generating single phase 230V AC 50Hz, or three phase 415V AC 50Hz power which is the standard power supply for all electrical equipment in India. To meet that requirement the telecom operators run the AC power diesel generator set at a constant speed of about 1500-1560 RPM (Revolution per minute) irrespective of the load requirement. Thus, even if the there is very minimal load condition at the customer site, the engine of the AC power diesel generator set still runs at 1500 RPM resulting in more consumption of fuel. To reduce the fuel consumption of the diesel generator set we have to reduce the speed of the engine as per the load requirement.
[0005] From the above data is becomes quite evident that currently significant
amount of diesel is unnecessarily consumed, which could have been prevented. The above noted problem becomes even more aggravated because of the rise in diesel prices on a monthly basis as well as because of the increase in the operational cost.
[0006] Thus, there is a neecf to develop a system within the AC power diesel
generator systems that reduces unnecessary-fuel consumption.
SUMMARY OF THE INVENTION
[0007] Accordingly disclosed herein is an AC power diesel generator system for
generating variable voltage and frequency in accordance with load conditions at customer site equipments, the diesel generator system including a speed variable engine drivingly coupled to an alternator that is electrically coupled to an SMPS disposed at the customer site equipments for supplying AC power thereto, the diesel generator system including a control panel arranged on a housing of the diesel generator system, the control panel including, a reader connectable to a supply line between the alternator and the SMPS for sensing actual voltage and current supplied to the customer site equipments according to the actual load conditions, the reader generating signals in response to the actual voltage and current supplied, an Electronic Control Unit (ECU) electrically connected to the reader for receiving signals generated from the reader and determining actual power drawn at the customer site equipments, the ECU preconfigured with a program for determining optimal

engine running speeds in response to the received signals and the determined actual power drawn, the ECU generating a discreet signal corresponding to each of the determined optimal engine running speeds, and an actuating mechanism disposed within the housing of the diesel generator system and operably connectable between the ECU and a fuel injection pump of the engine, the actuating mechanism capable of receiving the discreet signals from the ECU and based on each of the received discreet signals allowing the fuel injection pump to be actuated for supplying a controlled predetermined amount of fuel to the engine, wherein for each of an enhanced predetermined amount of fuel supplied to the engine, the engine runs at a corresponding enhanced speed thereby allowing the alternator to generate a pre-calculated enhanced AC voltage, and wherein for each of a reduced predetermined amount of fuel supplied the engine runs at a corresponding reduced speed thereby allowing the alternator to generate a pre-calculated reduced AC voltage.
[0008] In some embodiments, the actuating mechanism includes an electronic
actuator including a housing and a protruding arm, the electronic actuator capable of receiving the discreet signals from the ECU and based on each of the received discreet signals angularly rotating the protruding arm from an idle position to a plurality of first and second positions, the plurality of first and second positions being opposite in directions, and a linkage assembly pivotally connected between the protruding arm of the electronic actuator and a lever of the fuel injection pump via a pair of opposite ends, the linkage assembly angularly displacing the lever by a corresponding equal angular rotation in forward and rearward directions whenever the protruding arm is angularly rotated to the plurality of first and second positions, respectively, wherein each of the angular displacements of the lever in forward direction allows an enhanced predetermined amount of the fuel to be supplied to the engine, and each of the angular displacements of the lever in reverse direction allows a reduced predetermined amount of the fuel to be supplied to the engine.
[0009] In some embodiments, the protruding arm of the electronic actuator when
angularly rotated in the plurality of first positions exerts a pulling force on the mechanical linkage in the forward direction resulting in the mechanical linkage being linearly displaced by predetermined lengths, and wherein each of the linear displacement by the predetermined length exerts a corresponding torque on the lever of the fuel injection pump

in the forward direction resulting in the lever being angularly displaced by an equal angular rotation as that of the protruding arm.
[0010] In some embodiments, the protruding arm of the electronic actuator when
angularly rotated in the plurality of second positions exerts a retarding force on the mechanical linkage in the rearward direction resulting in the mechanical linkage being linearly displaced by predetermined lengths, and wherein each of the linear displacement by the predetermined length exerts a corresponding torque on the lever of the fuel injection pump in the rearward direction resulting in the lever being angularly displaced by an equal angular rotation as that of the protruding arm.
[0011] In some embodiments, the preconfigured program of the ECU has pre-stored
optimal engine speed values against each actual power rating, and wherein the program compares the actual power rating drawn against the available optimal engine speeds to determine a specific optimal engine speed value whenever the ECU receives a signal from the reader corresponding to an actual power drawn by the customer site equipments.
[0012] In another aspect of the present invention, a system configurable with an AC
power diesel generator system for generating variable voltage and frequency in accordance with load conditions at customer site equipments, the diesel generator system including a speed variable engine drivingly coupled to an alternator that is electrically coupled to an SMPS disposed at the customer site equipments for supplying AC power thereto, the system including a reader connectable to a supply line between the alternator and the SMPS for sensing actual voltage and current supplied to the customer site equipments according to the actual load conditions, the reader generating signals in response to the actual voltage and current supplied, an Electronic Control Unit (ECU) electrically connected to the reader for receiving signals generated from the reader and determining actual power drawn at the customer site equipments, the ECU preconfigured with a program for determining optimal engine running speeds in response to the received signals and the determined actual power drawn, the ECU generating a discreet signal corresponding to each of the determined optimal engine running speeds, wherein both the reader and the ECU are operably arranged within a control panel that is mounted on a housing of the diesel generator system, and an actuating mechanism disposable within the housing of the diesel generator system and operably connectable between the ECU and a fuel injection pump of the engine, the

actuating mechanism receiving the discreet signals from the ECU and based on each of the received discreet signals allowing the fuel injection pump to be actuated for supplying a controlled predetermined amount of fuel to the engine, wherein for each of the enhanced predetermined amount of fuel supplied to the engine, the engine runs at a corresponding enhanced speed thereby allowing the alternator to generate a pre-calculated enhanced AC voltage, and wherein for each of the reduced predetermined amount of fuel supplied the engine runs at a corresponding reduced speed thereby allowing the alternator to generate a pre-calculated reduced AC voltage.
[0013] In some embodiments, the system is capable of being packaged in a portable
kit.
[0014] It is to be understood that both the foregoing general description and the
following detailed description of the present embodiments of the invention are intended to provide an overview or framework for understanding the nature and character of the invention as it is claimed. The accompanying drawings are included to provide a further understanding of the invention and are incorporated into and constitute a part of this specification. The drawings illustrate various embodiments of the invention and together with the description serve to explain the principles and operation of the invention.
A BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The above-mentioned and other features and advantages of the various
embodiments of the invention, and the manner of attaining them, will become more apparent and better understood by reference to the accompanying drawings, wherein:
[0016] FIG. 1 is a side elevational view of an AC power diesel generator system
showing an engine and an alternator according to an embodiment of the present invention;
[0017] FIG. 2 is a perspective view of the AC power diesel generator system of FIG. 1
having an electronic actuator operably connected to a fuel injection pump of the engine according to an embodiment of the present invention;
[0018] FIG. 3 is a schematic diagram illustrating the AC power diesel generator
system of FIGS. 1 and 2 electrically connected to an actual load offered by customer site equipments according to an embodiment of the present invention; and

[0019] FIG. 4 is a schematic diagram of a reader and an ECU electrically connected to
the AC power diesel generator system and the customer site equipment of FIG. 3.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0020] FIGS. 1 and 2 show an AC power diesel generator system 100 according to an
embodiment of the present invention. The AC power diesel generator system 100 primarily includes an engine side 102 and an alternator side 104 each of which are disposed within a housing 106 of the AC power diesel generator system 100. The engine 102 includes an engine 108, running on variable speeds as per the load conditions on the customer sites, whereas the alternator side 104 includes an alternator 110. Both the engine 108 and the alternator 110 are mounted over their corresponding platforms 112 that are elevated to a predetermined distance from a base surface 114 of the housing 106 as seen in FIG. 1. A control panel 116 is operably connectable to the alternator 110 and the engine 108 and accessible from outside by an operator (not shown) for controlling various operating parameters of the AC power diesel generator system 100. The engine 108 also includes a radiator 118 for providing heat dissipation from the engine 108 and an exhaust pipe 120 for exhausting flue gases out of the AC power diesel generator system 100. Preferably, the AC power diesel generator system 100 is an AC power diesel generator set having specifications ranging between 15KVA - 40 KVA and generating power output of 23OV/50 Hz when operably connected to a load.
[0021] The control panel 116 as shown in FIG. 1 has a viewing screen and various
actuating buttons 122 operable by the operator for operating and controlling the AC power diesel generator system 100. Amongst other electronic devices disposed within the control panel 116, the control panel 116 primarily includes an Electronic Control Unit (ECU 124) electrically connected to a reader 126 as shown in FIG. 3. The ECU 124 is also electrically connected to an actuating mechanism 128 that is operably connected to a fuel injection pump of the engine 108.
[0022] According to an embodiment of the present invention, the actuating
mechanism 128 includes an electronic actuator 130 and a mechanical linkage assembly 138 operably connected with each other. As seen in FIG. 1, the electronic actuator 130 essentially comprises of a housing 132 having a protruding arm 134. The protruding arm 134 is pivotally connected to a first end 136 of a mechanical linkage assembly 138 whereas an

opposite second end (not shown} of the mechanical linkage assembly 138 is pivotally connected to a lever of the fuel injection pump (not shown). It is well known in the art that to regulate the speed of the engine 108 of the AC power diesel generator system 100, a controlled amount of fuel is injected in the combustion chamber (not shown) of the engine 108. To control the predetermined amount of fuel is supplied by the fuel injection pump the lever of the fuel injection pump is appropriately actuated by the mechanical linkage assembly 138.
[0023] It should be noted by a skilled person in the art that when the AC power
diesel generator system 100 is operating under the load conditions, the actuating mechanism 128 receives discreet signals from the ECU 124, which in turn receives signals generated from the reader 126, and based on each of the received discreet signals, the actuating mechanism 128 allows the mechanical linkage assembly 138 to operate the fuel injection pump. The fuel injection pump when operated supplies a controlled predetermined amount of fuel to the engine 108. Depending on the predetermined amount of fuel supplied to the engine 108, the engine 108 runs at a corresponding enhanced and reduced speed (variable speed) thereby allowing the alternator 110 to generate a pre-calculated enhanced or reduced AC voltage (variable AC voltage) depending on the load conditions.
[0024] FIG. 3 shows the AC power diesel generator system'100 to be electrically
connected to equipments that are positioned at a customer site, according to an embodiment of the present invention. Preferably, the customer site equipment is a telecom tower 140 having a battery bank 142 and an SMPS 144 (Switch Mode Power Supply) electrically connected with each other. It should however be noted that reference of telecom towers 140 at customer sites should not be considered to be limiting and other electrical or mechanical components are also covered within the scope of the present invention. As seen in FIG. 3, the telecom tower 140 typically accesses power from two AC power sources. First, from the EB 146 (electricity board) and second, from the AC power diesel generator system 100 when the EB 146 supply is not available. The AC power source that is available is first and foremost supplied to the SMPS 144 that converts the 230V 50Hz single phase AC power supply (or three phase 415V 50 Hz) to 48V DC power supply. This output power of the SMPS 144 is provided to charge the battery bank 142 of telecom tower

140. The battery bank 142 supplies the DC power to the various electrical components of the telecom tower 140 (See FIG. 3).
[0025] Preferably, the SMPS 144 that is used at the customer site has a specification
range of 90V to 300V and 25Hz to 65Hz. The SMPS 144 of such ratings are provided because the SMPS 144 is subjected to frequent voltage fluctuations upon receiving power from the EB 146. Generally, in order to reduce voltage fluctuations form such customer sites the customer has to install LCU {Line controlling Unit) and Voltage stabilizers, which results in additional costs to the customer. To eliminate LCU and Voltage stabilizer from the telecom site nowadays SMPS 144 that could accept input voltage and input frequency in the range of 90V- 300V and 25Hz- 65Hz, respectively, are used.
[0026] In the following description, the working of the AC power diesel generator
system 100, having the variable speed engine 108, and connected to the SMPS 144 of the telecom tower 140 is explained with the reference of FIGS. 3 and 4. The input AC supply that is provided to the SMPS 144 has a power rating of 230V, 50Hz. As seen in FIG. 4, the reader 126 may be disposed within the control panel 116 or at a suitable place is connected to a supply line between the alternator 110 and the SMPS 144. The reader 126 determines the actual voltage supplied by the AC power diesel generator system 100 as well as the actual current drawn by the battery bank 142 of the telecom tower 140. The reader 126 is adapted to measure both the voltage and the current as per the actual load conditions. The determined voltage and power is then supplied to the ECU 124 in the form of signals.
[0027] The ECU 124 is electrically connected to the reader 126 for receiving signals
generated from the reader 126 and calculating the actual power drawn, as per the actual load conditions. According to an embodiment of the present invention, the ECU 124 is preconfigured with a program for determining optimal engine running speeds in response to the received signals and the determined actual power drawn. Generally, the preconfigured program of the ECU 124 has pre-stored optimal engine speed values against each actual power ratings (actual power drawn values). Once an actual power drawn is determined by the ECU 124, the ECU 124 compares this actual power rating against the available optimal engine speeds to determine a specific optimal engine speed value. This value represents the optimal running speed at which when the AC power diesel generator system 100 operates would not consume unnecessary fuel. For each of the determined optimal running speeds,

the ECU 124 generates a discreet signal. Each of the generated discreet signals is then received by the actuating mechanism 128, which is electrically connected to the ECU 124. As noted above, based on each of the received discreet signals as per the load conditions the actuating mechanism 128 allows the fuel injection pump to be actuated for supplying a controlled predetermined amount of fuel to the engine 108.
[0028] In FIG. 2, the actuating mechanism 128 is shown to include the mechanical
linkage assembly 138 pivotally connected between the electronic actuator 130 and the lever of the fuel injection pump. The electronic actuator 130 includes the housing 132 and the protruding arm 134. The electronic actuator 130 is capable of receiving the discreet signals from the ECU 124 and based on each of the received discreet signals angularly rotating the protruding arm 134 from an idle position to either to a plurality of first positions or a plurality of second positions. The plurality of first and second positions are opposite in directions. For the purposes of understanding, the plurality of first positions refers to the protruding arm 134 being positioned in a forward direction and the plurality of second positions refers to the protruding arm 134 being positioned in a rearward direction. A free end of the protruding arm 134 is pivotally connected to the first end 136 of the mechanical linkage assembly 138 whereas the opposite second end of the mechanical linkage assembly 138 is pivotally connected to the lever of the fuel injection pump.
[0029] Whenever the protruding arm 134 is angularly rotated to the plurality of first
positions in response to the received discreet signals, the linkage assembly exerts a pulling force on the mechanical linkage in the forward direction resulting in the mechanical linkage being linearly displaced tn the forward direction by predetermined lengths corresponding to each of the plurality of first positions. Each of the linear displacement of the mechanical linkage assembly 138 by the predetermined length exerts a corresponding torque on the lever of the fuel injection pump in the forward direction. This results in the lever being angularly displaced by equal angular rotations as that of the protruding arm 134 in the forward direction. Further, each of the angular displacements of the lever in forward direction results in an enhanced predetermined amount of the fuel being supplied by the fuel injection pump to the engine 108. It should be understood by a skilled person in the art that for each of an enhanced predetermined amount of fuel supplied to the engine 108, the engine 108 runs at a corresponding enhanced speed (enhanced variable speeds} thereby

allowing the alternator 110 to generate a pre-calculated enhanced AC voltage, but not exceeding 230V, 50Hz. This AC voltage is then supplied to the SMPS 144 in accordance with the actual load conditions. As such, the engine 108 runs at varied enhanced speed (or RPMs) depending on the actual load conditions.
[0030] In a similar manner, a skilled person in the art would understand that
whenever the protruding arm 134 is angularly rotated to the plurality of second positions in response to the received discreet signals, the linkage assembly exerts a retarding force on the mechanical linkage in the rearward direction. This results in the mechanical linkage being linearly displaced in the rearward direction by predetermined lengths corresponding to each of the plurality of first positions. Each of the linear displacements of the mechanical linkage assembly 138 by the predetermined length exerts a corresponding torque on the lever of the fuel injection pump in the rearward direction. This results in the lever being angularly displaced by equal angular rotations as that of the protruding arm 134 in the rearward direction. Further, each of the angular displacements of the lever in rearward direction results in a reduced predetermined amount of the fuel being supplied by the fuel injection pump to the engine 108. For each of the reduced predetermined amount of fuel supplied to the engine 108, the engine 108 runs at a corresponding reduced speed (variable reduced speeds) thereby allowing the alternator 110 to generate a pre-calculated reduced AC voltage. This AC voltage is then supplied to the SMPS 144 in accordance with the actual load conditions. As such, the engine 108 runs at varied reduced speed (or RPMs) depending on the actual load conditions.
[0031] From the above noted various embodiments of the present invention, a
skilled person in the art would understand that the engine 108 of the AC power diesel generator system 100 runs at varied speed depending on the actual load conditions. So, if the load condition at the customer site equipments is on the higher side within the stipulated range of 1KW to 12 KW (for a rating of 15KVA - 40 KVA) at which the AC power diesel generator system 100 is supposed to operate, the variable speed engine 108 would be running at higher RPMs resulting in more consumption of fuel. However, if the load condition is on the lower side, the variable speed engine 108 of the AC power diesel generator system 100 would run at lower RPMs resulting in lesser consumption of fuel. Such an advantage is not possible to extract from the existing AC power diesel generator systems.

[0032] The above advantage becomes even more evident on referring to the below
table that illustrates the experimental details provided as a result of actual experimentation carried by the inventors.

LOAD
(KW) RPM FC in LPH Average FC(LPH) %FC gain
1.01 900 0.79 0.79 0.79 0.79
1.01 950 0.82 0.82 0.82 0.82
1.01 1000 0.87 0.87 0.85 0.86 28.72
1.01 1200 0.98 0.98 0.98 0.98
1.01 1537 1.21 1.21 1.21 1.21

2.02 900 1.06 1.06 1.06 1.06
2.02 925 1.06 1.06 1.06 1.06
2.02 1000 1.11 1.10 1.11 1.11 23.20%
2.02 1350 1.32 1.32 1.32 1.32
2.02 1534 1.45 1.44 1.44 1.44
[0033] The above table illustrates an open loop test in which the load on the AC
power diesel generator system 100 was kept constant at 1.01 KW and the speed of the AC power diesel generator system 100 was gradually increased from 1000 RPM to 1537 RPM to measure the fuel consumption at each of the speeds. The same procedure was repeated for 2.02 KW load. This test has also been carried out for various loads up to 12KW, however for the sake of reference details of only two values, i.e. 1.01 KW and 2.02 KW is provided in the table.
[0034] As seen from the table, for a constant KW of load if the engine 108 is run at
higher and lower RPMs the fuel consumption would be more with respect to the higher RPMs. So, for 1.01 KW of load applied, if the engine 108 runs at 1000 RPM instead of 1537 RPM (which is generally the case with existing diesel generator systems) the average fuel saved per hour would be approximately 28.72%. In case of 2.02 KW of load applied, if the engine 108 runs at 1000 RPM instead of 1534 RPM the average fuel saved per hour would be approximately 23.20%. It was also experimentally found that below 75% load of the power diesel generator system 100 saving on the fuel consumption was approximately 25%. The above mentioned savings are just illustrative of one AC power diesel generator system 100 and if one were to take into consideration multiple similar AC power diesel generator systems 100 installed at various places and localities, the savings would be even more.

[0035] A skilled person in the art would also understand that on the basis of above
experimental details for a given KW of load, the optimal speed of the engine 108 is calculated and pre-stored in the ECU 124 in the form of algorithms.
[0036] Thus, the above noted embodiments of the present invention could help the
telecom tower operators to reduce their operating costs by saving significantly on fuel consumption.
[0037] A skilled person would also understand that as a result of the engine 108
running to low RPMs, the generated voltage will be on the lower side. Same is the case with frequency as per the below equation:
Where:
f = frequency; N = Speed of the synchronous machine; P = No of pole of the Alternator
However, as noted above supplying AC power having frequency on the lower side to SMPS 144 would not harm the SMPS 144 due to its specification.
[0038] Another advantage that the various embodiments of the present invention
offers is that the various components reader 126, the Electronic Control Unit (ECU 124) and the actuating mechanism 128 could be packaged in the form of a kit. As per the customer requirement, the kits could be used to install the components thereof with the existing AC power diesel generator systems 100 therefore saving fuel consumption on those systems as well.
[0039] It will be apparent to those skilled in the art that various modifications and
variations can be made to the present invention without departing from the spirit and scope of the invention. Thus it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

We Claim:
1. An AC power diesel generator system for generating variable voltage and frequency in accordance with load conditions at customer site equipments, the diesel generator system including a speed variable engine drivingly coupled to an alternator that is electrically coupled to an SMPS disposed at the customer site equipments for supplying AC power thereto, the diesel generator system comprising:
a control panel arranged on a housing of the diesel generator system, the control panel including:
a reader connectable to a supply line between the alternator and the SMPS for sensing actual voltage and current supplied to the customer site equipments according to the actual load conditions, the reader generating signals in response to the actual voltage and current supplied; and
an Electronic Control Unit (ECU) electrically connected to the reader for
receiving signals generated from the reader and determining actual power drawn at
the customer site equipments, the ECU preconfigured with a program for
determining optimal engine running speeds in response to the received signals and
the determined actual power drawn, the ECU generating a discreet signal
corresponding to each of the determined optimal engine running speeds; and
an actuating mechanism disposed within the housing of the diesel generator system
and operably connectable between the ECU and a fuel injection pump of the engine, the
actuating mechanism capable of receiving the discreet signals from the ECU and based on
each of the received discreet signals allowing the fuel injection pump to be actuated for
supplying a controlled predetermined amount of fuel to the engine,
wherein for each of an enhanced predetermined amount of fuel supplied to the engine, the engine runs at a corresponding enhanced speed thereby allowing the alternator to generate a pre-calculated enhanced AC voltage, and wherein for each of a reduced predetermined amount of fuel supplied the engine runs at a corresponding reduced speed thereby allowing the alternator to generate a pre-calculated reduced AC voltage.

2. The AC power diesel generator system according to claim 1, wherein the actuating
mechanism includes:
an electronic actuator including a housing and a protruding arm, the electronic actuator capable of receiving the discreet signals from the ECU and based on each of the received discreet signals angularly rotating the protruding arm from an idle position to a plurality of first and second positions, the plurality of first and second positions being opposite in directions; and
a linkage assembly pivotally connected between the protruding arm of the electronic actuator and a lever of the fuel injection pump via a pair of opposite ends, the linkage assembly angularly displacing the lever by a corresponding equal angular rotation in forward and rearward directions whenever the protruding arm is angularly rotated to the plurality of first and second positions, respectively,
wherein each of the angular displacements of the lever in forward direction allows an enhanced predetermined amount of the fuel to be supplied to the engine, and each of the angular displacements of the lever in reverse direction allows a reduced predetermined amount of the fuel to be supplied to the engine.
3. The AC power diesel generator system according to claim 2, wherein the protruding arm of the electronic actuator when angularly rotated in the plurality of first positions exerts a pulling force on the mechanical linkage in the forward direction resulting in the mechanical linkage being linearly displaced by predetermined lengths, and wherein each of the linear displacement by the predetermined length exerts a corresponding torque on the lever of the fuel injection pump in the forward direction resulting in the lever being angularly displaced by an equal angular rotation as that of the protruding arm.
4. The AC power diesel generator system according to claim 2, wherein the protruding arm of the electronic actuator when angularly rotated in the plurality of second positions exerts a retarding force on the mechanical linkage in the rearward direction resulting in the mechanical linkage being linearly displaced by predetermined lengths, and wherein each of the linear displacement by the predetermined length exerts a corresponding torque on the lever of the fuel injection pump in the rearward direction resulting in the lever being angularly displaced by an equal angular rotation as that of the protruding arm.

5. The AC power diesel generator system according to claim 2, wherein the electronic actuator is positioned proximal to the engine and securely mounted over a bracket.
6. The AC power diesel generator system according to claim 1, wherein the precohfigured program of the ECU has pre-stored optimal engine speed values against each actual power rating, and wherein the program compares the actual power rating drawn against the available optimal engine speeds to determine a specific optimal engine speed value whenever the ECU receives a signal from the reader.
7. The AC power diesel generator system according to claim 1, wherein the AC power diesel generator system is a AC power diesel generator having a rating ranging between 15KVA -40 KVA and generating power output of variable voltage & frequency.
8. A system configurable with an AC power diesel generator system for generating variable voltage and frequency in accordance with load conditions at customer site equipments, the diesel generator system including a speed variable engine drivingly coupled to an alternator that is electrically coupled to an SMPS disposed at the customer site equipments for supplying AC power thereto, the system comprising:
a reader connectable to a supply line between the alternator and the SMPS for sensing actual voltage and current supplied to the customer site equipments according to the actual load conditions, the reader generating signals in response to the actual voltage and current supplied; and
an Electronic Control Unit (ECU) electrically connected to the reader for receiving signals generated from the reader and determining actual power drawn at the customer site equipments, the ECU preconfigured with a program for determining optimal engine running speeds in response to the received signals and the determined actual power drawn, the ECU generating a discreet signal corresponding to each of the determined optimal engine running speeds, wherein both the reader and the ECU are operably arranged within a control panel that is mounted on a housing of the diesel generator system; and
an actuating mechanism disposable within the housing of the diesel generator system and operably connectable between the ECU and a fuel injection pump of the engine,

the actuating mechanism receiving the discreet signals from the ECU and based on each of the received discreet signals allowing the fuel injection pump to be actuated for supplying a controlled predetermined amount of fuel to the engine,
wherein for each of the enhanced predetermined amount of fuel supplied to the
engine, the engine runs at a corresponding enhanced speed thereby allowing the alternator to generate a pre-calculated enhanced AC voltage, and wherein for each of the reduced predetermined amount of fuel supplied the engine runs at a corresponding reduced speed thereby allowing the alternator to generate a pre-calculated reduced AC voltage.
9. The system according to claim 8, wherein the actuating mechanism includes:
an electronic actuator including a housing and a protruding arm, the electronic actuator capable of receiving the discreet signals from the ECU and based on each of the received discreet signals angularly rotating the protruding arm from an idle position to a plurality of first and second positions, the plurality of first and second positions being opposite in directions; and
a linkage assembly pivotally connected between the protruding arm of the electronic actuator and a lever of the fuel injection pump via a pair of opposite ends, the linkage assembly angularly displacing the lever by a corresponding equal angular rotation in forward and rearward directions whenever the protruding arm is angularly rotated to the plurality of first and second positions, respectively,
wherein each of the angular displacements of the lever in forward direction allows an enhanced predetermined amount of the fuel to be supplied to the engine, and each of the angular displacements of the lever in reverse direction allows a reduced predetermined amount of the fuel to be supplied to the engine.
10. The system according to claim 9, wherein the protruding arm of the electronic actuator
when angularly rotated in the plurality of first positions exerts a pulling force on the
mechanical linkage in the forward direction resulting in the mechanical linkage being
linearly displaced by predetermined lengths, and wherein each of the linear displacement
by the predetermined length exerts a corresponding torque on the lever of the fuel injection

pump in the forward direction resulting in the lever being angularly displaced by an equal angular rotation as that of the protruding arm.
11. The system according to claim 9, wherein the protruding arm of the electronic actuator when angularly rotated in the plurality of second positions exerts a retarding force on the mechanical linkage in the rearward direction resulting in the mechanical linkage being linearly displaced by predetermined lengths, and wherein each of the linear displacement by the predetermined length exerts a corresponding torque on the lever of the fuel injection pump in the rearward direction resulting in the lever being angularly displaced by an equal angular rotation as that of the protruding arm.
12. The system according to claim 8, wherein the preconfigured program of the ECU has pre-stored optimal engine speed values against each actual power rating, and wherein the program compares the actual power rating drawn against the available optimal engine speeds to determine a specific optimal engine speed value whenever the ECU receives a signal from the reader.
13. The system according to claim 8, wherein the system is capable of being packaged in a portable kit.