FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
AND
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(See section 10; rule 13)
TITLE OF THE INVENTION
VARIABLE SPEED GENSET (VSG) TECHNOLOGY FOR POWER
GENERATION APPLICATION
APPLICANT(S)
KIRLOSKAR OIL ENGINES LIMITED
Nationality: Indian
Laxmanrao Kirloskar Road, Khadki,
Pune – 411 003, Maharashtra, India.
PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the invention and the
manner in which it is to be performed.
2
VARIABLE SPEED GENSET (VSG) TECHNOLOGY FOR POWER
GENERATION APPLICATION
FIELD OF INVENTION
[0001] The present invention pertains to the field of power generation
technology, specifically focusing on advanced diesel generator systems. It
relates to the development and implementation of variable speed genset (VSG)
technology, which enhances the operational efficiency, fuel economy, and
5 environmental performance of diesel engines used in power generation
applications..
BACKGROUND OF INVENTION
[0002] The present invention relates to the field of power generation,
10 specifically focusing on the development of variable speed genset (VSG)
technology for optimizing the performance and efficiency of diesel generator
systems. Diesel generators (DGs) are extensively used in remote locations and
as a backup power source in regions with frequent electricity shortages.
Despite their reliability and ease of production, traditional DGs face several
15 challenges, particularly concerning fuel consumption and greenhouse gas
(GHG) emissions.
[0003] One significant technical problem with conventional diesel generators
is their inefficiency at low load regimes. Standard gensets are designed to
20 operate at a fixed speed to ensure synchronous speed for electric power
generation, which results in maximum efficiency only at rated capacity.
However, when operating under lower loads which is common in many
applications—the efficiency drops significantly. This reduced efficiency leads
to increased fuel consumption, higher operational costs, and accelerated wear-
3
and-tear of the machinery. Moreover, the environmental impact due to the
emission of nitrogen oxides (NOx) and carbon monoxide (CO) further
exacerbates the challenges associated with traditional diesel gensets.
5 [0004] The solution provided by the present invention is the implementation
of a variable speed genset (VSG) system that adapts the engine speed based on
the electrical load demand, thereby optimizing fuel consumption and reducing
emissions. The invention incorporates an electronic governor that adjusts the
engine speed dynamically, coupled with a permanent magnet alternator
10 (PMA) and an AC-DC-AC converter. This configuration maintains a constant
frequency and stable voltage output, even as the engine speed varies to match
the load requirements.
[0005] The VSG technology overcomes the drawbacks of fixed-speed gensets
15 by ensuring enhanced fuel economy, lower GHG emissions, and reduced
maintenance costs. The inclusion of a mechanical governor as a fail-safe
mechanism provides reliability, ensuring continuous operation even in case of
electronic governor failure. Additionally, the system's compliance with CPCBIV+ emission norms highlights its contribution to environmental
20 sustainability. Overall, the invention offers a robust solution to the
inefficiencies and environmental challenges posed by traditional diesel
generator systems.
[0006] It is desired to address the above-mentioned disadvantages or other
25 short comings or at least provide a useful alternative.
OBJECT OF INVENTION
[0007] The primary object of the embodiments herein is to provide a variable
30 speed genset (VSG) system that enhances the efficiency of diesel generator
4
systems by allowing the engine to operate at variable speeds based on load
conditions, thereby optimizing fuel consumption.
[0008] Another object of the embodiments herein is to reduce greenhouse gas
5 emissions and improve environmental performance by ensuring the VSG
system complies with stringent emission norms, such as CPCB-IV+.
[0009] Yet another object of the embodiments herein is to offer a reliable
power generation solution by incorporating an electronic governor that
10 dynamically adjusts engine speed, and a mechanical governor as a fail-safe
mechanism to maintain engine speed stability in case of electronic governor
failure.
[0010] Another objective is to improve power generation efficiency by using a
15 permanent magnet alternator (PMA) and an AC-DC-AC converter, which
maintain constant frequency and stable voltage output, even as engine speed
varies.
[0011] Yet another object of the invention is to enhance user interaction and
20 system management through a genset controller module equipped with an
inbuilt human-machine interface (HMI) for operational control and
monitoring.
[0012] Yet another object of the invention is to provide a compact and cost25 effective power generation system with a higher power-to-size ratio,
facilitated by the integration of advanced components like the PMA and
electronic governor.
5
[0013] Yet another object of the invention is to provide ensure system
reliability and ease of maintenance with the inclusion of an onboard diagnostic
system for identifying and addressing field failures promptly.
5 [0014] Yet another object of the invention is to extend the operational life and
reduce maintenance costs of the genset by reducing the speed, components
wear and tear will reduce which will resultant to reduce the components
maintenance cost.
10 [0015] Yet another object of the invention is to cater to a wide range of
applications by offering a flexible and adaptive power generation solution that
performs efficiently across various load conditions.
[0016] Yet another object of the invention is to advance diesel generator
15 technology by providing a sustainable, efficient, and environmentally friendly
alternative to traditional fixed-speed gensets
SUMMARY OF INVENTION
[0017] The invention relates to a variable speed genset (VSG) system designed
to improve the efficiency and performance of diesel generator systems used in
20 power generation applications. This system innovatively adjusts engine speed
based on load conditions, thus optimizing fuel consumption and reducing
emissions.
[0018] The VSG system consists of a single vertical cylinder diesel engine
25 equipped with an electronic governor that dynamically controls engine speed
according to load input. A permanent magnet alternator (PMA) is coupled to
the engine, converting mechanical energy into electrical energy. The system
employs an AC-DC-AC converter to maintain constant frequency and stable
voltage output, even as engine speed varies. A genset controller module
6
manages the overall operation, including start/stop functions, safety
monitoring, and speed adjustments.
[0019] For enhanced reliability, the system includes a mechanical governor as
5 a fail-safe to ensure engine speed stability in case of electronic governor
failure. Additional features such as a cooling fan for temperature regulation,
an inbuilt human-machine interface (HMI) for user interaction, and an
onboard diagnostic system for maintenance further augment the system's
functionality.
10
[0020] The VSG system is designed to comply with CPCB-IV+ emission norms,
ensuring reduced greenhouse gas emissions and adherence to environmental
standards. This compliance is achieved without compromising on
performance, providing a robust solution to the inefficiencies associated with
15 traditional fixed-speed gensets.
[0021] Overall, the VSG system offers a compact, cost-effective, and sustainable
power generation solution, suitable for various applications. Its ability to
adapt engine speed to load demands significantly improves fuel economy and
20 reduces environmental impact, marking a substantial advancement in diesel
generator technology.
[0022] Another aspect of the invention is to provide a method for operating the
VSG system involves several key steps: receiving load input from a generator
25 to the electronic governor of the diesel engine, adjusting the engine speed
based on the received load input using the electronic governor, Converting the
engine's rotational energy into electrical energy using the PMA, maintaining a
constant frequency and stable voltage output using the AC-DC-AC converter,
managing start/stop operations and safety monitoring through the genset
30 controller module. These components and operational steps collectively
7
provide a robust and sustainable solution for modern power generation needs,
offering enhanced efficiency, reliability, and environmental performance.
[0023] These and other aspects of the embodiments herein will be better
5 appreciated and understood when considered in conjunction with the
following description and the accompanying drawings. It should be
understood, however, that the following descriptions, while indicating
preferred embodiments and numerous specific details thereof, are given by
way of illustration and not of limitation. Many changes and modifications may
10 be made within the scope of the embodiments herein without departing from
the scope thereof, and the embodiments herein include all such modifications.
BRIEF DESCRIPTION OF DRWINGS
15 [0024] The proposed invention are illustrated in the accompanying drawings,
throughout which like reference letters indicate corresponding part in the
various figures. The embodiments herein will be better understood from the
following description with reference to the drawings, in which:
[0025] Fig. 1 show block diagram of the Variable Speed Generator, according
20 to the embodiments as disclosed herein;
[0026] Fig. 2 shows Variable Speed Generator with canopy, according to the
embodiments as disclosed herein;
[0027] Fig. 3 shows Stepper Motor and Linkage mechanism, according to the
embodiments as disclosed herein;
25 [0028] Fig. 4 shows Permanent Magnet Alternator (PMA) assembly with
cooling fan, according to the embodiments as disclosed herein;
[0029] Fig. 5shows an Invertor (AC-DC-AC convertor), according to the
embodiments as disclosed herein;
[0030] Fig 6 show Genset controller module, according to the embodiments as
30 disclosed herein;
8
[0031] Fig. 7 illustrates Permanent Magnet Alternator assembly on engine,
according to the embodiments as disclosed herein;
[0032] Fig. 8 illustrates Engine Torque vs Fuel consumption at various engine
speed points, according to the embodiments as disclosed herein;
5 [0033] Fig. 9 shows graph Variable Speed operation of VSG compared to
standard constant speed genset, according to the embodiments as disclosed
herein; and
[0034] Fig 10 shows graph of Fuel consumption Vs electrical load on genset,
according to the embodiments as disclosed herein.
10
[0035] It may be noted that to the extent possible, like reference numerals have
been used to represent like elements in the drawing. Further, those of ordinary
skill in the art will appreciate that elements in the drawing are illustrated for
simplicity and may not have been necessarily drawn to scale. For example, the
15 dimension of some of the elements in the drawing may be exaggerated relative
to other elements to help to improve the understanding of aspects of the
proposed invention. Furthermore, the one or more elements may have been
represented in the drawing by conventional symbols, and the drawings may
show only those specific details that are pertinent to the understanding the
20 embodiments of the proposed invention so as not to obscure the drawing with
details that will be readily apparent to those of ordinary skill in the art having
benefit of the description herein.
DETAILED DESCRIPTION OF INVENTION
25
[0036] The implementations herein and the various features and
advantageous details thereof are explained more fully with reference to the
non-limiting implementations that are illustrated in the accompanying
drawings and detailed in the following description. It should be understood,
30 however, that the following descriptions, while indicating preferred
9
implementations and numerous specific details thereof, are given by way of
illustration and not of limitation. Many changes and modifications may be
made within the scope of the implementations herein, and the
implementations herein include all such modifications. The examples used
5 herein are intended merely to facilitate an understanding of ways in which the
implementations herein can be practiced and to further enable those skilled in
the art to practice the implementations herein. Accordingly, the examples
should not be construed as limiting the scope of the implementations herein.
10 [0037] Descriptions of well-known components and processing techniques are
omitted so as to not unnecessarily obscure the implementations herein. Also,
the various implementations described herein are not necessarily mutually
exclusive, as some implementations can be combined with one or more other
implementations to form new implementations.
15
[0038] Referring now to the drawings, and more particularly to FIGS. 1 through
10, where similar reference characters denote corresponding features
consistently throughout the figures, there are shown preferred
implementations. Further, for the sake of simplicity, and without limitation,
20 the same numbers are used throughout the drawings to reference like features
and components. The implementations herein will be better understood from
the following description with reference to the drawings.
[0039] Fig. 1 shows the Variable Speed Generator (VSG) system, which
25 comprises of various key components, each playing a crucial role in its
operation:
[0040] Single Vertical Cylinder Diesel Engine (100): The engine (100) serves
as the primary power source of the genset. It operates on a compression
10
ignition cycle and is equipped with a fuel injection pump that delivers diesel
fuel to the combustion chamber via a mechanical injector.
[0041] Electronic Governor / Regulator (102): This component is integral to
5 the VSG system's adaptive capabilities. The electronic governor is connected
to the engine (100) and adjusts the engine speed based on real-time load input.
By doing so, it ensures optimal fuel efficiency across various load conditions.
[0042] Permanent Magnet Alternator (PMA) (104): The PMA is coupled to the
10 engine (100) and is responsible for converting the engine's mechanical energy
into electrical energy. It includes a stator (112) and rotor (114), with the stator
(112) mounted to the engine crankcase body and the rotor (114) connected
on the engine crankshaft.
15 [0043] AC-DC-AC Converter (106) / Invertor : Also known as a frequency
converter, this component maintains constant frequency and stable voltage
output of the generator. It allows the control of the generator's rotation speed
over a wide range, facilitating efficient power generation even at varying
engine speeds.
20
[0044] Genset Controller Module (108): This module manages the overall
operation of the VSG system. It facilitates start/stop operations, safety
monitoring, and variable engine speed control based on load data. It also
includes an inbuilt human-machine interface (HMI) for user interaction and
25 monitoring.
[0045] Mechanical Governor : Serving as a fail-safe mechanism, the mechanical
governor maintains a fixed engine speed across all load points if there is a
malfunction in the electronic governor / regulator(102). This redundancy
30 ensures reliability and continuous power availability.
11
[0046] Onboard Diagnostic System: This system is included to identify and
diagnose any field failures within the genset, aiding in timely maintenance and
reducing downtime.
5 [0047] Cooling Fan (116): It is connected to the stator (112) of the PMA (104),
the cooling fan aids in maintaining optimal engine and alternator
temperatures during operation, thereby enhancing system longevity and
performance.
10 [0048] The base engine used in the present invention is single vertical cylinder
diesel engine (100) works on compression ignition cycle. The engine (100) is
equipped with a Fuel Injection Pump driven by crankshaft through a gear
mechanism. Diesel fuel is sprayed into the combustion chamber through
mechanical injector mounted on cylinder head. Fuel is delivered via metallic
15 high-pressure pipe to the injector.
[0049] An electric stepper motor is connected to fuel delivery control shaft of
fuel pump through a mechanical linkage as shown in figure 3. The electric
stepper motor operates through the genset controller (108). Based on load
20 input, stepper motor controls the fuel delivery of fuel pump which in turns
controls the speed of the engine (100) from 2000 rpm at no load to 3000 rpm
at full load.
[0050] A mechanical governor (not shown in figure) is used as fail-safe
25 function which will control the speed of engine at fixed 3000 rpm across all
load point as standard diesel genset in case of malfunctioning of linkage
actuation mechanism.
12
[0051] Figure 2 shows the variable Speed generator assembly. The whole
assembly is provided with canopy for protection from external factors like
rain, weather, and other extreme environmental conditions.
5 [0052] Figure 3 illustrates Stepper Motor and Linkage mechanism used in the
present invention. The electric stepper motor is connected to fuel delivery
control shaft of fuel pump through a mechanical linkage. The electric stepper
motor operates through the genset controller (108). Based on load input,
stepper motor controls the fuel delivery of fuel pump which in turns controls
10 the speed of the engine (100) from 2000 rpm at no load to 3000 rpm at full
load.
[0053] Figure 4 illustrates the Permanent Magnet Alternator (PMA) assembly
connected with a cooling fan (116) arrangement according to the present
15 invention. The PMA is coupled to the engine (100) and is responsible for
converting the engine's mechanical energy into electrical energy. It includes a
stator (112) and rotor (114), with the stator (112) mounted to the engine
crankcase body and the rotor (114) connected on the engine crankshaft. The
cooling fan (116) connected to the stator (112) of the PMA (104), the cooling
20 fan aids in maintaining optimal engine and alternator temperatures during
operation, thereby enhancing system longevity and performance.
[0054] Figure 5 illustrate AC-DC-AC Converter (106) / Invertor: It is also
known as a frequency converter, this component maintains constant
25 frequency and stable voltage output of the generator. It allows the control of
the generator's rotation speed over a wide range, facilitating efficient power
generation even at varying engine speeds.
[0055] Figure 6 shows the Genset Controller Module (108). The Genset
30 Controller Module (108) manages the overall operation of the VSG system. It
13
facilitates start/stop operations, safety monitoring, and variable engine speed
control based on load data. It also includes an inbuilt human-machine interface
(HMI) for user interaction and monitoring.
5 [0056] Figure 7 illustrates the Permanent Magnet Alternator assembly (700)
on the engine (100). The PMA is coupled to the engine (100) and is responsible
for converting the engine's mechanical energy into electrical energy. The
Permanent Magnet Alternator includes a stator (112) and rotor (114), with the
stator (112) mounted to the engine crankcase body and the rotor (114)
10 connected on the engine crankshaft. The cooling fan (116) connected to the
stator (112) of the PMA (104), and it is provided with a Fan cover (112).
[0057] Fig. 8 illustrates a graph of Engine Torque vs Fuel consumption at
various engine speed points. The ‘Y’ axis represent the engine torque in Nm
15 and the ‘X’ axis represent the engine speed in rpm. The graph show
comparison of maximum engine torque and the optimum engine torque for
minimum fuel consumption.
[0058] Fig. 9 shows graphical Variable Speed operation of the VSG compared
20 to standard constant speed genset. The ‘Y’ axis represents the engine speed in
rpm and the ‘X’ axis represents the Genset power in kW. The graph shows a
comparison of Genset power at constant speed of 1500rpm, 3000rpm and the
at variable speed.
25 [0059] Fig 10 shows graphical representation of Fuel consumption vs electrical
load on genset. The ‘Y’ axis represents the fuel consumption in litre/hour and
the ‘X’ axis represents the Genset power in kW. The graph shows a comparison
of fuel consumption at constant speed of 1500rpm, 3000rpm and the at
variable speed.
14
[0060] Operational Advantages: The present invention relates to a variable
speed genset (VSG) system designed to improve the efficiency and
environmental performance of diesel generator systems used in power
generation applications. The VSG system addresses the inefficiencies
5 associated with traditional fixed-speed gensets by dynamically adjusting
engine speed based on load conditions, thus optimizing fuel consumption and
reducing emissions.
[0061] The VSG system offers significant improvements over traditional
10 gensets by allowing the engine to operate at variable speeds, optimizing fuel
usage, and reducing greenhouse gas emissions. This adaptability ensures that
the genset operates efficiently across a range of load conditions, thereby
lowering operational costs and minimizing environmental impact.
15 [0062] By integrating advanced components such as the electronic governor
(102), PMA (104), and AC-DC-AC converter (106), the VSG system achieves a
higher power-to-size ratio, resulting in a more compact and cost-effective
solution for power generation. Additionally, the system's compliance with
stringent emission norms underscores its commitment to sustainability and
20 reduced environmental footprint.
[0063] Overall, the VSG system represents a significant advancement in diesel
generator technology, offering a reliable and efficient power generation
solution for various applications.
25
[0064] Method of Operation: A method for operating the VSG system
comprises several steps. Firstly, receiving load input from a generator to the
electronic governor (102) of the diesel engine (100). Then, adjusting the
engine speed based on the received load input using the electronic governor
30 (102), and converting the engine's (100) rotational energy into electrical
15
energy using the PMA (104). Thereafter, maintaining a constant frequency and
stable voltage output using the AC-DC-AC converter (106). and managing
start/stop operations and safety monitoring through the genset controller
module (108). These components and operational steps collectively provide a
5 robust and sustainable solution for modern power generation needs, offering
enhanced efficiency, reliability, and environmental performance.
[0065] Technical Advantages of the Invention are as follows:
10 [0066] Enhanced Fuel Efficiency: The variable speed genset (VSG) system
dynamically adjusts engine speed based on load input, optimizing fuel
consumption across various operating conditions. This adaptability leads to
significant improvements in fuel economy compared to traditional fixed-speed
gensets.
15
[0067] Reduced Emissions: By complying with CPCB-IV+ emission norms, the
VSG system reduces greenhouse gas emissions, including nitrogen oxides
(NOx) and carbon monoxide (CO), contributing to a lower environmental
impact and supporting global decarbonization efforts.
20
[0068] Improved Load Management: The electronic governor allows the
engine to operate efficiently across a range of load conditions, maintaining
optimal performance even at low loads. This capability reduces wear and tear,
extends the operational life of the genset, and decreases maintenance
25 frequency.
[0069] Stable Power Output: The integration of a permanent magnet
alternator (PMA) and an AC-DC-AC converter ensures constant frequency and
stable voltage output, providing reliable power quality for sensitive
30 applications that require precise voltage and frequency stability.
16
[0070] Fail-Safe Reliability: The inclusion of a mechanical governor as a failsafe mechanism ensures that the genset maintains a fixed engine speed across
all load points in the event of electronic governor failure, enhancing system
reliability and redundancy.
5
[0071] Compact and Cost-Effective Design: The VSG system offers a higher
power-to-size ratio, resulting in a more compact and cost-effective solution for
power generation. This design reduces overall size and cost without
compromising performance.
10
[0072] User-Friendly Operation: Equipped with an inbuilt human-machine
interface (HMI) and an onboard diagnostic system, the genset controller
module facilitates easy operation, monitoring, and maintenance, ensuring a
user-friendly experience.
15
[0073] Wide Applicability: The system's ability to adapt to varying load
conditions and its compliance with emission norms make it suitable for a
broad range of applications, including small-scale industries, residential
power backup, and environments with stringent emission regulations.
20
[0074] These above technical advantages make the VSG system a robust and
sustainable alternative to conventional diesel generators, offering improved
efficiency, reduced environmental impact, and reliable performance in diverse
power generation scenarios.
25
[0075] Technical Problems: Th following technical problems associated with
the invention can be identified:
[0076] Complexity of Integration: The VSG system involves the integration of
30 multiple advanced components, such as electronic governors, permanent
17
magnet alternators, and AC-DC-AC converters. This complexity may lead to
challenges in system integration and require precise calibration to ensure
optimal performance.
5 [0077] Reliability Concerns with Electronic Components: The reliance on
electronic governors and controllers introduces potential points of failure due
to electronic malfunctions. Although a mechanical governor is included as a
fail-safe, electronic failures could still impact system performance and
reliability.
10
[0078] Maintenance of Advanced Components: While the onboard
diagnostic system aids in maintenance, the advanced technology and
components, such as the PMA and inverter, may require specialized
maintenance knowledge and tools, which could increase operational costs and
15 downtime.
[0079] Initial Cost and Investment: The use of advanced technology and
components in the VSG system may result in higher initial costs compared to
traditional fixed-speed gensets. This could be a barrier to adoption for some
20 users, particularly in cost-sensitive markets.
[0080] Compliance with Emission Norms: While the system is designed to
comply with CPCB-IV+ emission norms, maintaining compliance requires
precise tuning and operation, which could be challenging in environments
25 with fluctuating load conditions or varying fuel quality.
[0081] Performance Under Variable Conditions: Although the system is
designed to adapt to varying load conditions, achieving optimal performance
consistently across all conditions may require extensive testing and
30 adjustments, potentially leading to performance variability.
18
[0082] These technical problems highlight areas where the VSG system may
encounter challenges, despite its advantages and innovations. Addressing
these issues would be crucial for the successful deployment and operation of
the technology.
5
[0083] Applications: Small scale industries, housing societies, hotels opt for
small diesel based generator sets as power backup solution. In most cases,
operating load on genset is low as compared to the rated capacity of genset.
Hence the fuel economy is a challenge for the customer with the standard fixed
10 speed genset. In this cases KOEL VSG will provide better fuel economy.
[0084] Government is focusing on reducing carbon emissions from gensets as
it leads to rise in Green House Gases. Hence the invented VSG is having lower
GHG emission and comply to latest emission norm.
15
[0085] The VSG perform better where frequency and voltage stability is key
parameter to for certain appliances. The invertor technology in VSG gives
stable electrical output than standard fixed speed genset.
20 [0086] The foregoing description of the specific implementations will so fully
reveal the general nature of the implementations herein that others can, by
applying current knowledge, readily modify and/or adapt for various
applications without departing from the generic concept, and, therefore, such
modifications and adaptations should and are intended to be comprehended
25 within the meaning and range of equivalents of the disclosed implementations.
It is to be understood that the phraseology or terminology employed herein is
for the purpose of description and not of limitation. Therefore, while the
implementations herein have been described in terms of preferred
implementations, those skilled in the art will recognize that the
19
implementations herein can be practiced with modification within the scope
of the implementations as described herein.
[0087] List to reference numerals:
5
10
Sr. No. Description
100 Single Vertical Cylinder Diesel Engine
102 Electronic Governor / Regulator
104 Permanent Magnet Alternator (PMA)
106 AC-DC-AC Converter (106) / Invertor
108 Genset Controller Module
112 Stator of PMA
114 Rotor of PMA
116 Cooling fan
122 Fan cover
700 variable speed genset (VSG) system

We Claim:

1. A variable speed genset (VSG) system for power generation
applications, comprising:
o a single vertical cylinder diesel engine (100) equipped with an
electronic governor (102) for controlling engine speed based on
load input,
o a permanent magnet alternator (PMA) (104) coupled to the
engine (100),
o an AC-DC-AC converter (106) for maintaining constant
frequency and stable voltage output of the generator,
o a genset controller module (108) configured to manage
start/stop operations, safety monitoring, and variable engine
speed operation based on load input.

2. The VSG system of claim 1, further comprises a mechanical governor
functioning as a fail-safe to maintain engine speed at a fixed rate across
all load conditions in the event of electronic governor (102) failure.
3. The VSG system of claim 1, wherein the PMA (104) includes a stator
(112) and a rotor (114), said stator (112) mounted to the engine
crankcase body and the rotor (114) connected on the engine
crankshaft.
4. The VSG system of claim 1, wherein the electronic governor (102)
provides torque curve mapping to achieve optimal fuel economy.

5. The VSG system of claim 1, further comprising a cooling fan (116)
connected to the stator (112) of the PMA (104) to cool the engine (100)
during operation.
6. The VSG system of claim 1, wherein the genset controller module (108)
includes an inbuilt human-machine interface (HMI) for operational
control and monitoring.
7. The VSG system of claim 1, further comprising an onboard diagnostic
system for identifying and diagnosing field failures.
8. The VSG system of claim 1, wherein the flywheel of the engine (100) is
integrated with the rotor part (114) of the PMA (104) to reduce the
overall size of the alternator assembly.
9. The VSG system of claim 1, wherein the system's operational speed
range can be enhanced for improved performance.
10. The VSG system of claim 1, wherein the system is configured to comply
with CPCB-IV+ emission norms to ensure reduced greenhouse gas
emissions and adherence to environmental standards.
11. A method for operating a variable speed genset (VSG) system for power
generation applications, comprising the steps of:
o receiving load input from a generator to an electronic governor
(102) of a single vertical cylinder diesel engine (100),
o adjusting the engine speed based on the received load input
using the electronic governor (102),
o converting the engine's (100) rotational energy into electrical
energy using a permanent magnet alternator (PMA) (104),
o maintaining a constant frequency and stable voltage output
using an AC-DC-AC converter (106),
o managing start/stop operations and safety monitoring through
a genset controller module (108).