CN220254137U - Power supply device, power supply system and data center - Google Patents
Power supply device, power supply system and data center Download PDFInfo
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- CN220254137U CN220254137U CN202321428874.8U CN202321428874U CN220254137U CN 220254137 U CN220254137 U CN 220254137U CN 202321428874 U CN202321428874 U CN 202321428874U CN 220254137 U CN220254137 U CN 220254137U
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Abstract
The present disclosure provides a power supply apparatus, a power supply system, and a data center, wherein the power supply apparatus includes: a power input; a first rectifier coupled to the power input for converting a first alternating current provided by the power input into a first direct current; a first DC/DC converter coupled to the second end of the first rectifier for converting the first DC power to a second DC power; the first energy storage unit is coupled with the first direct current/direct current converter and is used for storing energy of the second direct current; a first inverter coupled to the first rectifier for converting the first direct current to a second alternating current; a high frequency transformer coupled to the first inverter for converting the second alternating current into a third alternating current; a second rectifier coupled to the high frequency transformer for converting a third alternating current into a third direct current for powering a direct current load; and a second inverter coupled to the second rectifier for converting the third direct current to a fourth alternating current for powering the 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, a power supply system, 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;
a first rectifier, a first end of which is coupled with the power input end and is used for converting the first alternating current provided by the power input end into a first direct current;
a first dc/dc converter having a first end coupled to a second end of the first rectifier for converting the first dc power to a second dc power;
a first energy storage unit coupled to a second end of the first dc/dc converter for storing the second dc power;
a first inverter coupled at a first end to a second end of the first rectifier for converting the first direct current to a second alternating current;
a high frequency transformer, a first end of which is coupled with a second end of the first inverter, for converting the second alternating current into a third alternating current;
a second rectifier, a first end of the second rectifier being coupled to a second end of the high frequency transformer for converting a third alternating current to a third direct current; the third direct current is used for supplying power to a direct current load;
a second inverter coupled to the second rectifier for converting the third direct current to a fourth alternating current; the fourth alternating current is used for supplying power to an alternating current load.
Optionally, the power input terminal includes a first power input terminal and a second power input terminal; 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.
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 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 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 power supply device further comprises a second DC/DC converter and a second energy storage unit,
a first end of the second dc/dc converter is coupled to a second end of the second rectifier for converting the third dc power to a fourth dc power;
the second energy storage unit is coupled with the second end of the second direct current/direct current converter and is used for storing energy of the fourth direct current.
Optionally, the power supply device further comprises a controller and a first switch,
a first end of the first switch is coupled with a second end of the high-frequency transformer, and a second end of the first switch is coupled with a first end of the second inverter;
and the controller is used for controlling the first switch to be disconnected when receiving a fourth instruction.
Optionally, the first 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 power supply system comprising a power supply device as described in the first aspect for supplying power to an ac load and a dc load.
According to a third 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 and a dc 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 supplying power to the alternating current load and the direct current load in the power consumption peak period, so that the purpose of reducing the power consumption cost of the power supply device is achieved; on the premise of ensuring the safety and reliability of the power supply device, the energy storage system can be effectively fused.
In addition, the power supply device in the application adopts the power electronic converter such as the direct current/direct 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 fourth schematic diagram of a power supply device in an embodiment of the present disclosure;
fig. 6 is a schematic view of a fifth configuration of a power supply device in an embodiment of the present disclosure.
Reference numerals:
1000-a power supply device; 1-a power input;
11-a first power input; 12-a second power input;
2-a first rectifier; 3-a first inverter; 4-high frequency transformers; 5-a second rectifier;
6-a second inverter; 7-a first dc/dc converter; 8-a first energy storage unit;
9-a second dc/dc converter; 10-a second 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.
The first rectifier 2, the first end of the first rectifier 2 is coupled with the power input terminal 1, and is used for converting the first alternating current (for example, 10kV alternating current) provided by the power input terminal 1 into the first direct current (for example, 750V direct current).
The first inverter 3, the first end of the first inverter 3 is coupled with the second end of the first rectifier 2 for converting the first direct current into the second alternating current.
A first dc/dc converter 7, a first end of the first dc/dc converter 7 being coupled to a second end of the first rectifier 2 for converting the first dc power into a second dc power.
A first energy storage unit 8 is coupled to the second end of the first dc/dc converter 7 for storing energy of the second dc power.
A high frequency transformer 4, a first end of the high frequency transformer 4 being coupled to a second end of the first inverter 3 for converting the second alternating current into a third alternating current.
A second rectifier 5, a first end of which is coupled to a second end of the high frequency transformer for converting the third alternating current into a third direct current; the third direct current is used for supplying power to the direct current load.
A second inverter 6 coupled to the second rectifier 5 for converting the third direct current into a fourth alternating current; the fourth alternating current is used for supplying power to an alternating current 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 different working frequencies, the high-frequency transformer can be divided into the following stages: 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.
In this embodiment, the first dc/dc converter 7 is coupled to the first rectifier 2, so that the first dc power (for example, 750V dc power) output by the rectifier 2 can be converted into voltage, and the second dc power (for example, 1500V dc power) of the first energy storage unit 8 is converted Cheng Shiyu by the first dc power, so as to achieve the purpose of power supply by using the first energy storage unit 8.
In one embodiment, a solar photovoltaic panel may also be connected to the first energy storage unit 8, and the solar photovoltaic panel is used to charge the first energy storage unit 8, so that the environmentally friendly solar energy is converted into electric energy which can be stored by the first energy storage unit 8. Thus, solar energy can be fully utilized, consumption of energy sources such as diesel oil or gasoline can be reduced, and cost of the power supply device 1000 in a use stage 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 first energy storage unit in the embodiment of the present 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 first rectifier 2 with the first power input terminal 11, so that the power grid provides a power 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 first 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 power input to the power supply device 1000, and cuts off power input to the generator.
Wherein the first instruction triggers under any one of: the power grid supplies power normally, the power price of the power grid is higher than a preset power price, and the residual electric quantity of the first energy storage unit 8 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, the residual power of the first energy storage unit 8 is lower than the preset power price, and although the power grid supplies power normally and the power price of the power grid is higher than the preset power price, the first energy storage unit 8 does not have the capability of providing power input and is selected to continue to be supplied by the power grid because the residual power of the first energy storage unit 8 is lower than the preset power price.
As shown in fig. 3, the controller controls the power supply selection switch to connect 11 the rectifier 2 with the first power supply input end and disconnect the rectifier 2 from the second power supply input end 12, so that the power can be supplied to the first energy storage unit 8 and the ac load through the power grid, thereby facilitating the subsequent use of the first energy storage unit 8 to provide power input; the operator may 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 first energy storage unit 8.
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 power supply is more cost-effective by utilizing the power grid, and the rectifier 2 can be connected with the first power input end and disconnected with the second power input end, so that the power is supplied to the first energy storage unit 8 and the alternating current load through the power 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 first energy storage unit 8 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 first energy storage unit 8 is lower than the preset electric quantity.
Under the condition that the power grid is disconnected and the residual electric quantity of the first energy storage unit 8 is lower than the preset electric quantity, the first energy storage unit 8 and the power grid cannot be used as power input for supplying power; in this way, the generator can be used as an energy input to avoid situations where the power supply 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 first energy storage unit 8 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 first energy storage unit 8 is lower than the preset power, and although the first energy storage unit 8 cannot be used as a power input for supplying power and the power price of the power grid is higher at this time, the comprehensive cost is still higher than the power price of the power grid 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 first energy storage unit 8 is higher than the preset electric quantity;
the power grid supplies power normally, the power price of the power grid is higher than the preset power price, and the residual power of the first energy storage unit 8 is higher than the preset power.
Under the condition that the power grid is disconnected and the residual electric quantity of the first energy storage unit 8 is higher than the preset electric quantity, the first energy storage unit 8 has the capacity of providing power input, and the purpose of supplying power to an alternating current load can be achieved by taking the first energy storage unit 8 as the power input because the electric quantity of the first energy storage unit 8 mainly comes from the power reserve of the power grid during normal power supply, and the required cost is lower compared with the cost of supplying power through a generator.
The energy input provided by the first energy storage unit 8 is converted into 750V dc by the first dc/dc converter 7 through the first dc/dc converter 7, for example, the 1500V dc provided by the first energy storage unit 8 is converted into 750V dc by the first dc/dc converter 7, and since the first dc/dc converter 7 and the first inverter 3 are coupled at the same end of the first rectifier 2 in the embodiment of the present application, the dc obtained after being converted by the first dc/dc converter 7 can be transmitted to the first inverter 3, and after being converted into dc by the first inverter 3, the dc is sequentially obtained through the high-frequency transformer 4, the second rectifier 5 and the second inverter 6, so as to realize the power supply of the first energy storage unit 8 to the ac load.
Meanwhile, in the embodiment of the application, the direct current load and the second inverter are coupled at the same end of the second rectifier, and the direct current output by the second rectifier can supply power to the direct current load.
In one embodiment, as shown in fig. 6, the power supply device further includes a second dc/dc converter 9 and a second energy storage unit 10, where a first end of the second dc/dc converter 9 is coupled to a second end of the second rectifier 5, and is configured to convert the third dc power into a fourth dc power; the second energy storage unit 10 is coupled to a second end of the second dc/dc converter 9 for storing energy of the fourth dc power.
In this way, in case of a power outage or an insufficient amount of power of the first energy storage unit, the second energy storage unit 10 may directly supply the dc load via the conversion of the current by the second dc/dc converter 9 and supply the ac load via the second inverter, since the second dc/dc converter 9 is coupled to the second terminal of the second rectifier 5 and the dc load is also coupled to the second terminal of the second rectifier 5.
In one embodiment, the power supply device further comprises a first switch, a first end of the first switch being coupled to the second end of the high frequency transformer, a second end of the first switch being coupled to the first end of the second inverter; when the fourth instruction is received, the controller controls the first switch to be disconnected, and the purpose of directly utilizing the second energy storage unit to supply power to the direct current load and the alternating current load is achieved.
The fourth instruction in the embodiment of the present application may be triggered under any one of the following situations:
the residual electric quantity of the second energy storage unit is higher than the preset electric quantity, and the power grid is powered off;
the residual electricity quantity of the second energy storage unit is higher than the preset electricity quantity, and the electricity price of the power grid is higher than the preset electricity price.
In the first aspect, the high-frequency transformer can be used for isolating a circuit; in the second aspect, the second energy storage unit is coupled to the second dc/dc converter, and the second dc/dc converter, the dc load and the second inverter are coupled to the same end of the second rectifier, so that the current output by the second energy storage unit can directly supply power to the dc load after passing through the second dc/dc converter, and meanwhile, the current output by the second dc/dc converter can supply power to the ac load after passing through the second inverter.
Therefore, uninterrupted power supply to the alternating current load and the direct current load can be realized under the condition that the power grid is powered off and the residual electric quantity of the second energy storage unit is higher than the preset electric quantity; and under the condition that the residual electric quantity of the second energy storage unit is higher than the preset electric quantity and the power grid supplies power normally but the power price of the power grid is higher than the preset power price, the electric energy of the second energy storage unit is used for supplying power to the direct current load and the alternating current load, so that the power consumption cost for supplying power to the direct current load and the alternating current load is reduced.
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 supplying power to the alternating current load and the direct current load in the power consumption peak period, so that the purpose of reducing the power consumption cost of the power supply device is achieved; on the premise of ensuring the safety and reliability of the power supply device, the energy storage system can be effectively fused.
In addition, the power supply device in the application adopts the power electronic converter such as the direct current/direct 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 power supply system, 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.
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 that the power supply device 1000, the ac load, and the dc load are provided inside the data center of the present application, each power supply device 1000 is configured to convert the ac power into a current 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, and in practical application, the number of power supply devices 1000 and the number of loads connected to each power supply device 1000 may be multiple, and the structures of multiple power supply devices 1000 and multiple loads may be multiple types, which are not described herein.
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 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 (10)
1. A power supply device, characterized by comprising:
the power input end is used for being connected with an external power input;
a first rectifier, a first end of which is coupled with the power input end and is used for converting the first alternating current provided by the power input end into a first direct current;
a first dc/dc converter having a first end coupled to a second end of the first rectifier for converting the first dc power to a second dc power;
a first energy storage unit coupled to a second end of the first dc/dc converter for storing the second dc power;
a first inverter coupled at a first end to a second end of the first rectifier for converting the first direct current to a second alternating current;
a high frequency transformer, a first end of which is coupled with a second end of the first inverter, for converting the second alternating current into a third alternating current;
a second rectifier, a first end of the second rectifier being coupled to a second end of the high frequency transformer for converting a third alternating current to a third direct current; the third direct current is used for supplying power to a direct current load;
a second inverter coupled to the second rectifier for converting the third direct current to a fourth alternating current; the fourth alternating current is used for supplying power to an alternating current 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 claim 1, further comprising a second DC/DC converter and a second energy storage unit,
a first end of the second dc/dc converter is coupled to a second end of the second rectifier for converting the third dc power to a fourth dc power;
the second energy storage unit is coupled with the second end of the second direct current/direct current converter and is used for storing energy of the fourth direct current.
7. The power supply device of claim 6, further comprising a controller and a first switch,
a first end of the first switch is coupled with a second end of the high-frequency transformer, and a second end of the first switch is coupled with a first end of the second inverter;
and the controller is used for controlling the first switch to be disconnected when receiving a fourth instruction.
8. The power supply device according to any one of claims 1-7, characterized in that the first energy storage unit comprises a plurality of energy storage subunits connected in series and/or in parallel.
9. A power supply system comprising a power supply device according to any one of claims 1-8, the power supply device supplying power to an ac load and a dc load.
10. A data center comprising a power supply device according to any one of claims 1-8 for supplying an ac load and a dc load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321428874.8U CN220254137U (en) | 2023-06-06 | 2023-06-06 | Power supply device, power supply system and data center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321428874.8U CN220254137U (en) | 2023-06-06 | 2023-06-06 | Power supply device, power supply system and data center |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220254137U true CN220254137U (en) | 2023-12-26 |
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