The present invention relates to a system for providing Direct Current (DC) Power Supply for Computers. The invention further relates to providing Direct Current Power Supply for Computers and Servers where Uninterrupted Power Supply (UPS) is a requirement.
Background of invention:
Uninterrupted Power Supply and Switch Mode Power Supply is used for Computers and Servers for operating them. In the existing Power Supply mechanism, the Alternating Current (AC) Power Supply is rectified in the UPS and the battery(s) of UPS is charged and then the DC power from Battery is inverted to AC Power and is transferred to Computer and Servers. The same AC power when transferred to Computers and Servers, is converted into required DC Supplies (+3.3 Volts, + 5.0 Volts, + 12.0 Volts, -5 Volts, -12 Volts and other required operational Voltages) through the Convertor ( Example- Switch Mode Power Supplies (SMPS)). The obtained DC supplies through the Convertor are used in the operation of Computers and Servers.
In the above mentioned existing Power Supply System, there is a mandatory conversion requirement of two times rectification and one time inversion of the Power Supply. Specifically, first the AC Power available to the Premises of buildings is fed into the UPS which convert the AC into DC to charge the batteries (The batteries are already installed in the UPS). The DC power from the batteries is then inverted into AC power in the UPS and the same is supplied to Computers and Servers. In the Computers and servers, Convertor is provided to convert the AC supply to the DC supplies required for the operation of the Computer. In the whole process of conversions of power supplies, there is a problem of high energy consumption, bulkiness of equipment and low quality power supplies (Like Fourier Series of the power supply creating disturbance in the operation of the Computer and the Servers along with heating effect in the Computers and Servers.)
The system of present invention overcomes the above said problem by providing Direct Current Power Supply for Computers and Servers. The newly developed system increases the conversion efficiency of AC supplies available at the premises to DC power supplies required for the operation of the Computers and Servers.
The system of present invention is less bulky and improves the quality of the Power for Computers and Servers (Comparatively lesser Fourier series Generation).
Summary of Invention:
An objective of the present invention is to provide a Direct Current Bus power supply for use of computers or electronic equipment of similar nature comprising:
a solar panel and a Direct Current Power Supply Bus, directly connected to a DC Bus;
an AC power supply, which supplies AC current to a rectifier, which rectifies the AC current to DC current for charging a battery which is connected to the Direct Current Bus;
wherein the DC Bus supplies power to electronic equipment.

Yet according to an objective of the invention, the DC Bus supplies power to mother board and Peripherals of Computer / Server via a Direct Current Switch Mode Power Supply.

Yet according to an objective of the invention, more than a battery are connected in a combination to give a power output equal to the voltage of the Direct Current Bus power supply.

Yet according to an objective of the invention, a solar power supply available in the premises is converted to give output equal to the voltage of the Direct Current Bus and connected to the Direct Current Bus.
Yet according to an objective of the invention, a local direct current bus supply available in the premises is converted to give output equal to the voltage of the Direct Current Bus and connected to the Direct Current Bus;
Yet according to an objective of the invention, the Direct Current Bus power supply voltage of 12 Volts to 500 Volts.
Yet according to an objective of the invention, the Direct Current Bus power supply is connected to the Direct Current Switch Mode Power Supply for use of computers or electronic equipment of similar nature comprising of:
a noise filter;
an inrush current limiter circuit for limiting the inrush current to the Direct Current Switch Mode Power Supply;
control supply for switching ON and OFF Direct Current Switch Mode Power Supply by the mother board or manual mode;
control supply for switching ON and OFF Pulse Width Modulation Controller with the feedback of errors of plural outputs of Direct Current Switch Mode Power Supply;
pulse width Modulation controller to provide switching signals to High Frequency Power Switches;
transformer to convert the High Frequency Power to the plural outputs required by the Computer;
rectifier to rectify the individual output of the plural output to direct current requirements by the computer.
Yet another objective of the present invention is to provide a system for providing Direct current power supply, wherein Direct Current power supply system is located exterior to the computer/server to which the power supply is being provided.
Yet another objective of the present invention is to provide a system for providing Direct current power supply, wherein Direct Current switch mode power supply section is present externally or internally to the computer/server to which Power Supply is being provided.
Yet another objective of the present invention is to provide a system for providing Direct current power supply, wherein DCPS voltage range starts from 12 Volts DC onwards to higher level DC voltages depending on the load requirement, number of batteries used and AC power supply available to the premises.
Yet another objective of the present invention is to provide a system for providing Direct current power supply, wherein the control power supply is to provide control supply of +5V and +12V to switch on/off the computer / server and the main power supply respectively.
These and other features, benefits and advantages of the present invention will become apparent by reference to the following text figures, with like reference numbers referring to like structures across the views.

Brief Description of Drawings:
Figure 1 is a block diagram showing the power supply known in conventional system.
Figure 2 is a block diagram showing the power supply according to present invention.
Figure 3 is a block diagram showing the functioning of DCSMPS according to present invention.

Detailed Description of Invention:
While the present invention is described herein by way of example using several embodiments and illustrative drawings, those skilled in the art will recognize that the invention is not limited to the embodiments of drawing or drawings described, and are not intended to represent the scale of the various components. Further, some components that may form a part of the invention may not be illustrated in certain figures, for ease of illustration, and such omissions do not limit the embodiments outlined in any way. It should be understood that the drawings and detailed description thereto are not intended to limit the invention to the particular form disclosed, but on the contrary, the invention is to cover all modification/s, equivalents and alternatives falling within the spirit and scope of the present invention as defined by the appended claims. The headings used herein are for organizational purposes only and are not meant to be used to limit the scope of the description or the claims. As used throughout this description, the word "may" is used in a permissive sense (i.e. meaning having the potential to), rather than the mandatory sense (i.e. meaning must). Further, the words "a" or "an" mean "at least one” and the word “plurality” means one or more, unless otherwise mentioned. Furthermore, the terminology and phraseology used herein is solely used for descriptive purposes and should not be construed as limiting in scope. Language such as "including," "comprising," "having," "containing," or "involving," and variations thereof, is intended to be broad and encompass the subject matter listed thereafter, equivalents, and additional subject matter not recited, and is not intended to exclude other additives, components, integers or steps. Likewise, the term "comprising" is considered synonymous with the terms "including" or "containing" for applicable legal purposes. Any discussion of documents, acts, materials, devices, articles and the like is included in the specification solely for the purpose of providing a context for the present invention. It is not suggested or represented that any or all of these matters form part of the prior art base or were common general knowledge in the field relevant to the present invention.
In this disclosure, whenever a composition, an element or a group of elements is preceded with the transitional phrase "comprising", it is understood that we also contemplate the same composition, element or group of elements with transitional phrases "consisting essentially of, "consisting", "selected from the group of consisting of, "including", or "is" preceding the recitation of the composition, element or group of elements and vice versa.
So that the manner in which the above recited features of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only typical embodiments of this invention and are therefore not to be considered limiting of its scope, for the invention may admit to other equally effective embodiments.

The DCPS consists of one or more of the following – Battery Charger (Rectifies the AC power supply available in the premises) with Battery, Solar Panel, Local DC Bus Supply. The DCPS voltage range starts from 12 Volts DC onwards to higher level DC voltages depending on the load requirement, number of batteries used and AC power supply available to the premises.
The DCPS is made available to the Computers and Servers. In the Computer / Server DCSMPS is provided to convert the DCPS to the required DC supplies for the operation of the Computer / Server. The DCSMPS is located inside or outside the Computer / Server as per the requirement of the customer / system.
Figure 1 shows the prevailing system, Alternating Current power supply (AC1) available to the premises is provided as input to the Uninterrupted Power Supply (UPS) of the computer / server. Alternating Current power supply (AC2) generated by UPS is supplied as input to the Computers / Servers. UPS comprises of a rectifier (R1), Battery (B1) and Inverter (Inv). Rectifier (R1) rectifies the AC1 to direct current to charge the battery(s)(B1) of the UPS. Battery (B1) stores the direct current power. Inverter (Inv) provided in the UPS converts the direct current power battery B1 into Alternating Current AC2 is provided to computer / server, monitor and printer of the computer system. Computer / server is provided with SMPS inside the computer / server. The SMPS comprises of rectifier (R11) and DC to DC converter (DD1). R11 rectifies the AC2 supplied to the computer / server to direct current requirement of the DC to DC converter (DD1). The DC to DC converter (DD1) converts the direct current from R11 to the various DC supplies requirement for the computer / server.
Figure 2 shows the invention, Alternating Current power supply (AC1) available to the premises is rectified to direct current by rectifier (R2) to charge the battery (B2). The direct current from the battery (B2) is made available to the Direct Current Bus (DCB). The DCB is designed as per the computer / server load requirement. Solar Power supply (SP) available in the premises is connected to the DCB. The Local DC Bus Supply (LDC1) available in the premises is connected to the DCB. The supply voltage from Battery (B2), Solar Power supply (SP) and Local DC Bus Supply (LDC1) are same and design voltage of DCB. The Battery (B2), Solar Power Supply (SP), Local DC Bus Supply (LDC1) and Direct Current Bus (DCB) are together referred as Direct Current Power Supply (DCPS). The direct current power from DCB is provided to Direct Current Switch Mode Power Supply (DCSMPS) of computer / server of the computer and Direct Current power supply to monitor (DC21) & Direct Current power supply printer (DC22). The DCSMPS converts the direct current from DCB to various DC supplies (DC23) requirement for the computer / server. The Direct Current power supply to monitor (DC21) is provided as per the design of the monitor manufacturer and similarly Direct Current power supply to printer (DC22) is provided as per the design of the printer manufacturer.

Figure 3 shows the invention, the DCSMPS functional block diagram. The DCSMPS is connected to the DCPS. The noise in the direct current power supplied from DCPS is filtered in the Noise Filter (Nf) circuit section and inrush current is controlled by the inrush control provided in the Noise Filter (Nf) circuit section. The direct current output from the Noise Filter (Nf) section is provided as input to Control Supply circuit section (Cpm) of Mother Board (of computer/server), Control Supply circuit section (Cpp) of Pulse Width Modulation Controller and High Frequency Switch circuit section (Ps). The control supply generated in the Cpm is provided to mother board of the computer / server to give switch ON / OFF command control supply to Cpp. On receiving the ON / OFF command control supply from the Cpm, Cpp is switched ON / OFF with the feedback from the output of DCSMPS about the errors and protection detection conditions as per the requirement of the mother board manufacturer. The Cpp switches ON / OFF PWM control circuit section. The PWM gives switching control supply to Ps as per the designed outputs of DCSMPS and feedback from the Output Voltage Controller (Ovc) to generate the Power Pulses which are given as input to the Transformer (T2). Transformer (T2) generates the output pulses as per the designed voltage transformation and number of outputs. The outputs generated from T2 are given as input to the rectifier (R22) for rectification. The output of R22, DC23 are the outputs of the DCSMPS which are made available to the mother board of the computer / server.
The DCPS consists of one or more of the following – Battery Charger (Rectifies the AC power supply available in the premises) with Battery, Solar Panel, Industrial DC Bus Supply. The DCPS voltage range starts from 12 Volts DC onwards to higher level DC voltages depending on the load requirement, number of batteries used and AC power supply available to the premises.
Example 1: Load requirement is one personal computer and AC power supply available to the premises is 240 Volts AC. The option of DCPS is 12 Volts or above 12 Volts DC bus supply. The DCPS requirement is 12 Volts or above 12 Volts.
Example 2: Load requirement is ten personal computers and AC power supply available to the premises is 240 Volts AC. The option of DCPS is 48 Volts or above 48 Volts DC bus supply (assuming that the total load current is limited to 20 Amperes). The DCPS requirement is 48 Volts or above 48 Volts.
Various modifications to these embodiments are apparent to those skilled in the art from the description and the accompanying drawings. The principles associated with the various embodiments described herein may be applied to other embodiments. Therefore, the description is not intended to be limited to the embodiments shown along with the accompanying drawings but is to be provided broadest scope of consistent with the principles and the novel and inventive features disclosed or suggested herein. Accordingly, the invention is anticipated to hold on to all other such alternatives, modifications, and variations that fall within the spirit and scope of the present invention and appended claims.

WE CLAIM:
1. A Direct Current Bus power supply for use of computers or electronic equipment of similar nature comprising:
a solar panel and a Direct Current Power Supply Bus, directly connected to a DC Bus;
an AC power supply, which supplies AC current to a rectifier, which rectifies the AC current to DC current for charging a battery which is connected to the Direct Current Bus;
wherein the DC Bus supplies power to electronic equipment.
2. The Direct Current Bus power supply as claimed in claim 1 wherein, the DC Bus supplies power to mother board and Peripherals of Computer / Server via a Direct Current Switch Mode Power Supply.
3. The Direct Current Bus power supply as claimed in claim 1 wherein, more than one battery are connected in a combination to give a power output equal to the voltage of the Direct Current Bus power supply.
4. The Direct Current Bus power supply as claimed in claim 1 wherein, the solar power supply available in the premises is converted to give output equal to the voltage of the Direct Current Bus and connected to the Direct Current Bus.
5. The Direct Current Bus power supply as claimed in claim 1 wherein, the local direct current bus supply available in the premises is converted to give output equal to the voltage of the Direct Current Bus and connected to the Direct Current Bus.
6. The Direct Current Bus power supply as claimed in claim 1 wherein, the Direct Current Bus power supply voltage of 12 Volts to 500 Volts.
7. The Direct Current Bus power supply as claimed in claim 1 wherein, the Direct Current Bus power supply is connected to the Direct Current Switch Mode Power Supply for use of computers or electronic equipment of similar nature comprising of:
a noise filter;
an inrush current limiter circuit for limiting the inrush current to the Direct Current Switch Mode Power Supply;
control supply for switching ON and OFF Direct Current Switch Mode Power Supply by the mother board or manual mode;
control supply for switching ON and OFF Pulse Width Modulation Controller with the feedback of errors of plural outputs of Direct Current Switch Mode Power Supply;
pulse width Modulation controller to provide switching signals to High Frequency Power Switches;
transformer to convert the High Frequency Power to the plural outputs required by the Computer;
rectifier to rectify the individual output of the plural output to direct current requirements by the computer.
8. The Direct Current Bus power supply as claimed in claim 1 wherein, the Direct Current power supply system is located exterior to the computer/server to which the power supply is being provided.
9. The Direct Current Bus power supply as claimed in claim 8 wherein, Direct Current switch mode power supply section is present externally or internally to the computer/server to which Power Supply is being provided.
10. The Direct Current Bus power supply as claimed in claim 1 wherein, the DCPS voltage range starts from 12 Volts DC onwards to higher level DC voltages depending on the load requirement, number of batteries used and AC power supply available to the premises.