CN220254143U - Power supply device and data center - Google Patents
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- CN220254143U CN220254143U CN202321428932.7U CN202321428932U CN220254143U CN 220254143 U CN220254143 U CN 220254143U CN 202321428932 U CN202321428932 U CN 202321428932U CN 220254143 U CN220254143 U CN 220254143U
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Abstract
The present disclosure provides a power supply device and a data center, wherein the power supply device includes: the power input end is used for being connected with an external power input; a rectifier coupled to the power input terminal for converting the first alternating current provided by the power input terminal into a first direct current; a DC/DC converter coupled to the rectifier for converting the first DC power to a second DC power; the energy storage unit is coupled with the direct current/direct current converter and is used for storing energy of the second direct current; an inverter coupled to the rectifier for converting the first direct current to a second alternating current; a high frequency transformer coupled to the inverter for converting the second alternating current into a third alternating current; and the alternating current/alternating current converter is coupled with the high-frequency transformer and is used for converting the third alternating current into a fourth alternating current, and the fourth alternating current is used for supplying power to an alternating current load.
Description
Technical Field
The present disclosure relates to the field of power supply technologies, and in particular, to a power supply device and a data center.
Background
At present, in the process of supplying power to load equipment, a power grid is generally used as a power supply input of the power supply device, and medium-voltage alternating current (for example, 10kV alternating current) provided by the power grid is converted into current (for example, 380V alternating current) with lower voltage through the power supply device, so that the power supply to the load equipment is realized.
Along with the popularization of green electricity obtained by converting clean energy sources such as solar energy, wind power, biomass energy, geothermal energy and the like, the proportion of the green electricity in a power grid is gradually increased.
Compared with the traditional thermal power generation, the green electricity is greatly influenced by factors such as flood season, service time and the like, so that the electricity prices of the power grids in different periods can have large differences, and therefore, how to effectively reduce the electricity cost of the power supply equipment becomes a problem to be solved urgently.
Disclosure of Invention
It is an object of the present disclosure to provide a new solution for supplying power.
According to a first aspect of the present disclosure, there is provided a power supply apparatus including:
the power input end is used for being connected with an external power input;
the rectifier is coupled with the power input end and is used for converting the first alternating current provided by the power input end into first direct current;
a dc/dc converter coupled to the rectifier for converting the first dc power to a second dc power;
the energy storage unit is coupled with the direct current/direct current converter and is used for storing energy of the second direct current;
an inverter coupled to the rectifier for converting the first direct current to a second alternating current;
a high frequency transformer coupled to the inverter for converting the second alternating current into a third alternating current;
an ac/ac converter coupled to the high frequency transformer for converting the third ac power to a fourth ac power for powering an ac load.
Optionally, the power input terminal includes a first power input terminal and a second power input terminal; the power supply device further comprises a power supply switching selection switch.
The first power input end is used for being connected with a power grid, and the second power input end is used for being connected with a generator.
The power supply selection change-over switch is used for switching the connection relation between the first power supply input end, the second power supply input end and the rectifier.
Optionally, the power supply device further comprises a controller,
and the controller is used for controlling the power supply selection switch to connect the rectifier with the first power supply input end and controlling the power supply selection switch to disconnect the rectifier from the second power supply input end when receiving a first instruction.
Optionally, the first instruction is triggered under any one of the following conditions:
the power grid supplies power normally, the electricity price of the power grid is higher than a preset electricity price, and the residual electric quantity of the energy storage unit is lower than the preset electric quantity.
The power grid supplies power normally, and the electricity price of the power grid is lower than a preset electricity price.
Optionally, the power supply device further comprises a controller,
and the controller is used for controlling the power supply selection switch to disconnect the rectifier from the first power supply input end when receiving the second instruction and controlling the power supply selection switch to connect the rectifier with the second power supply input end.
Optionally, the second instruction is triggered when the power grid is disconnected and the remaining power of the energy storage unit is lower than a preset power.
Optionally, the power supply device further comprises a controller,
and the controller is used for controlling the power supply selection switch to disconnect the rectifier from the first power supply input end when receiving a third instruction and controlling the power supply selection switch to disconnect the rectifier from the second power supply input end.
Optionally, the third instruction is triggered under any one of the following conditions:
the power grid is disconnected, and the residual electric quantity of the energy storage unit is higher than a preset electric quantity;
the power grid supplies power normally, the electricity price of the power grid is higher than a preset electricity price, and the residual electricity of the energy storage unit is higher than the preset electricity.
Optionally, the energy storage unit comprises a plurality of energy storage subunits connected in series and/or in parallel.
According to a second aspect of the present disclosure there is provided a data center comprising a power supply device as described in the first aspect for supplying power to an ac load.
The power supply device is coupled with the energy storage unit for carrying out standby power on the power input provided by the power grid, and the energy storage unit can be used for realizing power supply to the alternating current load in the power utilization peak period, so that the purpose of reducing the power utilization cost of the power supply device is achieved; the energy storage system can be effectively fused on the premise of ensuring safety and reliability.
In addition, the power supply device in the application adopts the power electronic converter such as an alternating current/alternating current converter with smaller area than the traditional transformer, so that the occupied area of the power supply device is smaller, and the civil engineering resource can be saved.
Other features of the present disclosure and its advantages will become apparent from the following detailed description of exemplary embodiments of the disclosure, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a schematic view of a first configuration of a power supply device in an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a power input in an embodiment of the disclosure;
FIG. 3 is a schematic diagram of a second configuration of a power supply device in an embodiment of the disclosure;
FIG. 4 is a schematic view of a third configuration of a power supply device in an embodiment of the present disclosure;
fig. 5 is a schematic diagram of a fourth configuration of a power supply device in an embodiment of the disclosure.
Reference numerals:
1000-a power supply device; 1-a power input;
11-a first power input; 12-a second power input;
a 2-rectifier; a 3-inverter; 4-high frequency transformers; a 5-ac/ac converter;
6-DC/DC converter; 7-an energy storage unit.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
As shown in fig. 1, an embodiment of the present application provides a power supply apparatus 1000, including:
the power input end 1 is used for being connected with an external power input.
A rectifier 2 is coupled to the power input terminal 1, and is configured to convert a first alternating current (e.g. 10kV alternating current) provided by the power input terminal 1 into a first direct current (e.g. 750V direct current).
A dc/dc converter 6 is coupled to the rectifier 2 for converting the first dc power into a second dc power.
And the energy storage unit 7 is coupled with the direct current/direct current converter 6 and is used for storing energy of the second direct current.
An inverter 3 is coupled to the rectifier 2 for converting the first direct current into a second alternating current.
A high frequency transformer 4 coupled to the inverter 3 for converting the second alternating current into a third alternating current.
An ac/ac converter 5 coupled to the high frequency transformer 4 for converting the third ac power to a fourth ac power for powering the ac load.
The inverter is a converter for converting direct current electric energy (battery, accumulator jar) into constant frequency and voltage or frequency and voltage-regulating alternating current, and is composed of an inverter bridge, a control logic and a filter circuit, and is widely applicable to air conditioners, home theatres, electric grinding wheels, electric tools, sewing machines, DVDs, VCDs, computers, televisions, washing machines, smoke exhaust fans, refrigerators, video recorders, massagers, fans and the like.
The high-frequency transformer is a power transformer with the working frequency exceeding the intermediate frequency (10 kHz), and is mainly used as a high-frequency switching power transformer in a high-frequency switching power supply and also used as a high-frequency inversion power transformer in a high-frequency inversion power supply and a high-frequency inversion welding machine; according to the different working frequencies, the high-frequency transformer can be classified into the following classes: 10kHz-50kHz, 50kHz-100kHz, 100 kHz-500 kHz, 500 kHz-1 MHz, and more than 1 MHz.
Compared with a common transformer, the high-frequency transformer adopted in the embodiment of the application is smaller in size, and the whole size of the power supply device can be reduced, so that the occupied area of the power supply device is smaller.
Ac/ac converters can be divided into the following types: the types of ac/ac converters used in the embodiments of the present application are not limited by the particular type of cycloconverter, ac-to-ac converter with dc link, matrix converter, and hybrid matrix converter.
In the embodiment of the present application, the dc/dc converter 6 is coupled to the rectifier 2, so that the first dc (e.g. 750V dc) output by the rectifier 2 can be converted into the second dc (e.g. 1500V dc) suitable for the energy storage unit 7, so as to achieve the function of storing energy and preparing electricity through the energy storage unit 7.
In one embodiment, a solar photovoltaic panel may also be connected to the energy storage unit 7, and the solar photovoltaic panel is used to charge the energy storage unit 7, so as to convert solar energy into electric energy that can be stored by the energy storage unit 7. Thus, solar energy can be fully utilized, consumption of energy sources such as diesel oil or gasoline can be reduced, and electricity cost of the power supply device 1000 can be reduced.
The solar photovoltaic panel is a device for directly converting solar energy into electric energy due to photovoltaic effect, when sunlight irradiates on the photodiode, the photodiode can convert the solar energy into electric energy to generate current, and a plurality of batteries are connected in series or in parallel to form a solar cell array with a certain output power.
The solar photovoltaic panel generates electricity in two main modes, one is a light-heat-electricity conversion mode, and the other is a light-electricity direct conversion mode; the photo-thermal-electric conversion mode is to generate electricity by heat energy generated by solar radiation, the solar heat collector converts the absorbed heat energy into steam of working medium, the photo-thermal conversion process is to generate electricity by a steam turbine driven by generated steam, and the thermal-electric conversion process is to generate electricity. The photoelectric-electric direct conversion method is to directly convert solar radiation energy into electric energy by utilizing photoelectric effect.
The energy storage unit in the embodiment of the application may include a plurality of energy storage subunits connected in series and/or in parallel.
In one embodiment, as shown in fig. 2, the power output terminal includes a first power input terminal 11 and a second power input terminal 12, and the power supply device 1000 further includes a power switching selection switch (not shown in fig. 2), where the first power input terminal 11 is used for connection to a power grid, the second power input terminal 12 is used for connection to a generator, and the power switching selection switch is used for switching connection relationships between the first power input terminal 11, the second power input terminal 12 and the rectifier 2.
The power supply device 1000 in this embodiment of the present application may further include a controller, where the controller controls the power selection switch, for example, the controller controls the power selection switch to connect the rectifier 2 with the first power input terminal 11, so that the power grid provides the power supply input for the power supply device 1000.
In one embodiment, upon receiving the first command, the controller controls the power selection switch to connect the rectifier 2 to the first power input 11, controls the power selection switch to disconnect the rectifier 2 from the second power input 12, causes the power grid to provide the power input to the power supply 1000, and cuts off the power input to the generator.
Wherein the first instruction may be triggered under any one of the following: the power grid supplies power normally, the electricity price of the power grid is higher than the preset electricity price, and the residual electric quantity of the energy storage unit 7 is lower than the preset electric quantity; the power grid supplies power normally and the electricity price of the power grid is lower than the preset electricity price.
Under the condition that the power grid supplies power normally and the power price of the power grid is higher than the preset power price, and the residual power of the energy storage unit 7 is lower than the preset power price, the energy storage unit 7 does not have the capability of providing power input because the residual power of the energy storage unit 7 is lower than the preset power price although the power grid supplies power normally and the power price of the power grid is higher than the preset power price, and the power input is continuously selected to be provided by the power grid.
As shown in fig. 3, the controller controls the power supply selection switch to connect the rectifier 2 with the first power supply input end 11 and disconnect the rectifier 2 from the second power supply input end 12, so that the power can be supplied to the energy storage unit 7 and the alternating current load through the power grid, and the power input can be conveniently provided by the energy storage unit 7; the operator can set a preset electricity price and a preset electric quantity according to the actual requirement, for example, the preset electric quantity is 40% of the maximum electric quantity of the energy storage unit 7.
In case the grid is supplying power normally and the price of the grid is higher than the preset price of power, it is cost-effective to utilize the grid for supplying power than to utilize the generator, and it is equally possible to choose to connect the rectifier 2 to the first power input 11 and disconnect the rectifier 2 from the second power input 12, and supply power to the energy storage unit 7 and the ac load via the grid.
In one embodiment, upon receiving the second instruction, the controller controls the power selection switch to disconnect the rectifier 2 from the first power input 11 and controls the power selection switch to connect the rectifier 2 to the second power input 12.
Wherein the second instruction may be triggered under any one of:
the power grid is disconnected, and the residual electric quantity of the energy storage unit 7 is lower than the preset electric quantity;
the power grid supplies power normally, the electricity price of the power grid is higher than the preset electricity price, and the residual electric quantity of the energy storage unit 7 is lower than the preset electric quantity.
Under the condition that the power grid is disconnected and the residual electric quantity of the energy storage unit 7 is lower than the preset electric quantity, the energy storage unit 7 and the power grid cannot be used as power input for supplying power; at this time, the generator may be used as an energy input to avoid a case where the power supply device 1000 has no power input.
As shown in fig. 4, the controller controls the power supply selection switch to disconnect the rectifier 2 from the first power supply input terminal 11, and controls the power supply selection switch to connect the rectifier 2 to the second power supply input terminal 12, so as to supply power to the energy storage unit 7 and the ac load.
The generator is a mechanical device for converting mechanical energy into electric energy, and is driven by a water turbine, a steam turbine, a diesel engine or other power machines, so that energy generated by water flow, air flow, fuel combustion or nuclear fission is converted into mechanical energy to be transmitted to the generator, and then the mechanical energy is converted into electric energy by the generator.
The types of generators are various, and the generators are divided into synchronous generators, asynchronous generators, single-phase generators and three-phase generators in principle; the generator may be classified into a turbo generator, a hydro generator, a diesel generator, a gasoline generator, etc. from the aspect of the generation, and the embodiment of the present application does not limit the type of the specifically adopted generator.
Under the condition that the power grid supplies power normally and the power price of the power grid is higher than the preset power price, the residual power of the energy storage unit 7 is lower than the preset power, and although the energy storage unit 7 cannot be used as a power input to supply power and the power price of the power grid is higher at this time, the comprehensive cost can still be higher than the power price higher than the preset power price due to the fact that energy sources such as diesel oil or gasoline are consumed when the power generator is used for generating power, the power supply by the power grid is selected to be continued more economically than the power supply by the power generator, and the consumption of the diesel oil or the gasoline is reduced.
In one embodiment, when receiving the third instruction, the controller controls the power selection switch to disconnect the rectifier 2 from the first power input terminal 11, and controls the power selection switch to disconnect the rectifier 2 from the second power input terminal 12, as shown in fig. 5.
Wherein the third instruction triggers under any one of:
the power grid is disconnected, and the residual electric quantity of the energy storage unit 7 is higher than the preset electric quantity;
the power grid supplies power normally, the electricity price of the power grid is higher than the preset electricity price, and the residual electricity quantity of the energy storage unit 7 is higher than the preset electricity quantity.
Under the condition that the power grid is disconnected and the residual electric quantity of the energy storage unit 7 is higher than the preset electric quantity, the energy storage unit 7 has the capability of providing power input, and the purpose of supplying power to an alternating current load can be achieved by taking the energy storage unit 7 as the power input because the electric quantity of the energy storage unit 7 mainly comes from the power supply reserve in the normal power supply period of the power grid, and the required cost is lower than that of supplying power through a generator.
The energy input provided by the energy storage unit 7 is converted into 750V dc by the dc/dc converter 6 through the dc/dc converter 6, for example, 1500V dc provided by the energy storage unit 7, and since the dc/dc converter 6 and the inverter 3 are coupled at the same end of the rectifier 2 in the embodiment of the present application, the dc obtained after being converted by the dc/dc converter 6 can be delivered to the inverter 3, and after being converted into dc by the inverter 3, the dc is sequentially converted by the high-frequency transformer 4 and the ac/ac converter 5 to obtain ac suitable for the ac load, so as to realize the power supply of the ac load by the energy storage unit 7.
The power supply device in the embodiment of the application is coupled with the energy storage unit for carrying out standby power on the power input provided by the power grid, and the energy storage unit can be used for supplying power to the alternating current load in the power utilization peak period, so that the purpose of reducing the power utilization cost of the power supply device is achieved.
In addition, the power supply device in the application adopts the power electronic converter such as an alternating current/alternating current converter with smaller area than the traditional transformer, so that the occupied area of the power supply device is smaller, and the civil engineering resource can be saved.
The embodiment of the application also provides a data center, which comprises the power supply device 1000 in the embodiment of the application, wherein the power supply device 1000 is used for supplying power to an alternating current load.
In the case where the power supply apparatus 1000 and the ac load are provided inside the data center of the present application, each power supply apparatus 1000 is configured to convert ac power into ac power adapted to a part of the components in the load, thereby supplying power to the part of the components in the load. That is, different components in the load may be individually powered by the plurality of power supply devices 1000. For example, the load may be a server, and two power supply devices 1000 are respectively provided, where one power supply device 1000 is used to supply power to a fan in the server, and the other power supply device 1000 is used to supply power to a chip and a logic circuit in the server.
The ac power provided by the power input terminal 1 to which the power supply device 1000 is connected may be medium-voltage ac power (e.g., 10kV ac power), and the ac power output by the power supply device 1000 may be low-voltage ac power (e.g., 380V ac power).
It should be noted that, the power supply device 1000 shown in fig. 1 includes only one load, in practical application, the number of power supply devices 1000 and the number of ac loads connected to each power supply device 1000 may be multiple, and the structures of the multiple power supply devices 1000 and the multiple ac loads may be multiple types, which are not described herein again.
In addition, it should also be noted that the power supply device 1000 provided in the embodiment of the present application may be applied not only to a data center, but also to other application scenarios where alternating current needs to be converted into alternating current with different voltages so as to supply power to a load.
The foregoing description of the embodiments of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvement of the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.
Claims (7)
1. A power supply device, characterized by comprising:
the power input end is used for being connected with an external power input;
the rectifier is coupled with the power input end and is used for converting the first alternating current provided by the power input end into first direct current;
a dc/dc converter coupled to the rectifier for converting the first dc power to a second dc power;
the energy storage unit is coupled with the direct current/direct current converter and is used for storing energy of the second direct current;
an inverter coupled to the rectifier for converting the first direct current to a second alternating current;
a high frequency transformer coupled to the inverter for converting the second alternating current into a third alternating current;
an ac/ac converter coupled to the high frequency transformer for converting the third ac power to a fourth ac power for powering an ac load.
2. The power supply of claim 1, wherein the power input comprises a first power input and a second power input; the power supply device also comprises a power supply switching selection switch;
the first power input end is used for being connected with a power grid, and the second power input end is used for being connected with a generator;
the power supply selection change-over switch is used for switching the connection relation between the first power supply input end, the second power supply input end and the rectifier.
3. The power supply device according to claim 2, further comprising a controller,
and the controller is used for controlling the power supply selection switch to connect the rectifier with the first power supply input end and controlling the power supply selection switch to disconnect the rectifier from the second power supply input end when receiving a first instruction.
4. The power supply device according to claim 2, further comprising a controller,
and the controller is used for controlling the power supply selection switch to disconnect the rectifier from the first power supply input end when receiving the second instruction and controlling the power supply selection switch to connect the rectifier with the second power supply input end.
5. The power supply device according to claim 2, further comprising a controller,
and the controller is used for controlling the power supply selection switch to disconnect the rectifier from the first power supply input end when receiving a third instruction and controlling the power supply selection switch to disconnect the rectifier from the second power supply input end.
6. The power supply device according to any one of claims 1-5, characterized in that the energy storage unit comprises a plurality of energy storage subunits connected in series and/or in parallel.
7. A data center comprising a power supply device according to any one of claims 1-6 for supplying an alternating current load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321428932.7U CN220254143U (en) | 2023-06-06 | 2023-06-06 | Power supply device and data center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321428932.7U CN220254143U (en) | 2023-06-06 | 2023-06-06 | Power supply device and data center |
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| Publication Number | Publication Date |
|---|---|
| CN220254143U true CN220254143U (en) | 2023-12-26 |
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| CN202321428932.7U Active CN220254143U (en) | 2023-06-06 | 2023-06-06 | Power supply device and data center |
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| CN (1) | CN220254143U (en) |
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- 2023-06-06 CN CN202321428932.7U patent/CN220254143U/en active Active
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