CN112117753A - Modular data center system based on direct current bus - Google Patents
Modular data center system based on direct current bus Download PDFInfo
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- CN112117753A CN112117753A CN202011022475.2A CN202011022475A CN112117753A CN 112117753 A CN112117753 A CN 112117753A CN 202011022475 A CN202011022475 A CN 202011022475A CN 112117753 A CN112117753 A CN 112117753A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/08—Three-wire systems; Systems having more than three wires
- H02J1/084—Three-wire systems; Systems having more than three wires for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J1/086—Three-wire systems; Systems having more than three wires for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load or loads and source or sources when the main path fails
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Abstract
The invention discloses a modular data center system based on a direct current bus, which is characterized by comprising a power supply input module, a DC/DC power conversion module, a power distribution module and an EMS system, wherein the power supply input module is connected with the DC/DC power conversion module; the power input module is divided into photovoltaic input, alternating current input and storage battery input, three paths of power supplies are converted into direct current through the energy storage converter PSC in a unified mode and input into the DC/DC power conversion module; the DC/DC power conversion module is subjected to two DCDC conversions; the power distribution module is used for distributing power to each direct current load in the data center. The modular data center system is uniformly allocated by a superior EMS, takes various modes such as an alternating current power supply, photovoltaic power generation, a storage battery and the like as power supplies to form complementary input, converges the complementary input into a direct current bus to transmit electric energy, and transmits the electric energy to a server of the data center and each internal direct current load through direct current conversion and power distribution of each power module.
Description
Technical Field
The invention relates to a modular data center system based on a direct current bus, and belongs to the technical field of power supply and distribution.
Background
Data centers generally refer to a material carrier for realizing centralized processing, storage, transmission, exchange and management of information through computer clustering, and the power supply technology is a technology of converting voltage formed by various power distribution equipment (or elements) and power distribution facilities and directly distributing the power to end users. The data center power supply technology is a power supply technology which converts input power supplies and power into direct current required by a server and the like and can realize uninterrupted power supply when external input fails.
In both domestic and foreign countries, the traditional data center power supply technology is mainly based on alternating current bus power supply, and due to the complexity of alternating current frequency, phase and the like, the alternating current bus is not beneficial to parallel connection of a power supply and electrical equipment, so that the stability of the system is endangered. The traditional data center power supply technology has a single input power type, generally only needs commercial power input, and needs to be independently provided with a rear battery, so that inconvenience is brought to system maintenance. The traditional data center power supply technology is mainly an alternating current UPS power supply technology, has many single-point faults and is difficult to maintain, a data center generally using an alternating current UPS is difficult to form a modular framework, and huge energy consumption brought to a system is difficult to estimate due to the fact that the alternating current UPS is low in loading rate and conversion efficiency.
In the current power supply technology on the market, a monitoring system is not perfect enough, data loss is easy to cause due to unstable operation of a machine room, and loss cannot be estimated. The problems of poor redundancy effect, high maintenance cost and low reliability of the power distribution scheme need to be solved urgently.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a modular data center system based on a direct current bus, realizes reliable power supply for a data center based on a full direct current bus, simplifies the conversion link and is beneficial to improving the reliability and the power supply efficiency of a data center power supply system.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the invention relates to a modular data center system based on a direct current bus, which comprises a power supply input module, a DC/DC power conversion module, a power distribution module and an EMS system, wherein the power supply input module is connected with the DC/DC power conversion module; the power input module is divided into photovoltaic input, 380V-110 KV alternating current input and storage battery input, three paths of power supplies are uniformly converted into direct current through the energy storage converter PSC and input into the DC/DC power conversion module; the DC/DC power conversion module converts 750V direct current into 240V direct current after two DCDC conversions, one path of direct current is sent to a direct current load, and the other path of direct current converts the 240V direct current into 48V direct current which can be used by the direct current load; the power distribution module is used for distributing power to each direct current load in the data center; the EMS system collects real-time remote sensing information, can monitor the on-off state of each element and the change of voltage, current and phase angle according to the power network topology and the connection relation of each element, simultaneously estimates the condition of a line, and can monitor and correct remote sensing error information when the load flow distribution of the line and a transformer is formed; the EMS system can also optimize the electric energy quality by switching the capacitor through adjusting the switch state according to the feedback reactive information, and when the direct current system breaks down, the fault analysis and calculation are carried out, and an alarm is sent out for avoiding multiple faults.
The DCV/DCV power conversion module with the isolation function comprises a Digital Signal Processor (DSP), and an input EMC filter circuit, a three-level Vienna rectifier circuit, a three-level LLC resonant high-efficiency converter, an output control protection circuit and an output EMC filter circuit which are sequentially connected in series; the power conversion module has the working principle that the EMC filter circuit is input to meet strict EMC requirements, output voltage and current signals are uniformly managed by the digital signal processor DSP, the module is connected with output current signals and is compared with average current to obtain error values, the voltage output of each module is adjusted, the output current of the module is further adjusted, the output current is sent into the three-level Vienna rectifying circuit and the three-level LLC resonant efficient converter to carry out voltage grade conversion, the converted direct current is converted into 240V direct current, and then the strict EMC and filter circuit are sent into the power distribution unit; the input ends of the three-level Vienna rectifying circuit, the three-level LLC resonant high-efficiency converter, the output control protection circuit and the output EMC filter circuit are connected with the output end of a DSP (digital signal processor), the input EMC filter circuit is connected with an auxiliary power supply in parallel, and the DSP is also connected with a control and communication module.
The modular data center system adopts a double-power-supply double-bus power supply mode, and an input power supply of a power supply input module comprises an Alternating Current (AC) power supply, photovoltaic power generation and a storage battery; the direct current input by the photovoltaic is inverted into alternating current through an inverter INV and rectified into 750V direct current through a PSC energy storage converter; 380V-110 kV alternating current input from the outside is uniformly converted to a target voltage through a transformer and rectified into 750V direct current through a PSC; the storage battery is converted into 750V direct current through PSC; the inverter INV, the bidirectional DC/DC and the DC/AC energy storage converter PCS respectively automatically adjust output and are uniformly merged into a 750V direct current bus.
Under normal conditions, the storage battery is in a charging state, can be used for standby and also has a peak regulation function for photovoltaic power generation input; if the external alternating current input is interrupted, the storage battery and the photovoltaic input can rapidly supply electric energy, so that uninterrupted power supply is realized; similarly, the photovoltaic input is interrupted, the continuous operation of the whole system can be ensured by the input of other two paths of power supplies, and meanwhile, the system adopts a dual-power-supply dual-bus architecture, so that the failure of one path is avoided, and the reliability is high.
The direct current bus has three voltage levels including a 750V direct current bus, a 240V direct current bus and a 48V direct current bus.
The DC/DC power conversion module is used for realizing wide voltage input and output, has high-frequency isolation by three-level LLC resonance, inputs wide voltage range DC 200-1000V, and automatically adjusts output voltage DC 750-50V.
The DC/DC power conversion module comprises
The direct current input system is used for inputting two paths of DC750V direct current;
the direct current-direct current converter modules are connected in parallel with one another and are used for performing power conversion on direct current input by the direct current input system and realizing voltage conversion of 750V direct current to 240V direct current;
the direct current output power distribution unit is used for outputting 240V direct current to supply power to a load;
the monitoring system comprises an intelligent instrument and a display screen, wherein the intelligent instrument is used for collecting power parameters and is arranged on an incoming line, a feeder line and an outgoing line loop of the converter device, the intelligent instrument is connected to the display screen, the display screen displays curves of the power parameters in real time, and when various power parameters are abnormal, an alarm is given; the monitoring system is also reserved with an RS485 communication interface and a communication protocol, and can be incorporated into a previous-level monitoring system to realize remote centralized management and monitoring.
The direct current-direct current converter module comprises a power circuit and a pure DSP digital control circuit; the power circuit comprises a filtering and EMC module and a power conversion module;
the input and the output of the power conversion module are subject to strict filtering and EMC requirements, the power conversion module is a three-level Vienna conversion and LLC resonant soft switching converter topological combination, contains a transformer, has a high-frequency isolation function, and realizes the conversion of electric energy from direct current to alternating current and then from alternating current to direct current;
the pure DSP digital control circuit comprises a DSP chip and a DSP peripheral circuit.
The DSP peripheral circuit comprises a sampling circuit for sampling voltage and current, a driving circuit of a collecting plate, a fault protection circuit, a communication circuit, a buzzer and a switching value reading circuit, wherein the voltage and current on the input side and the output side of the converter pass through the sampling circuit and are converted into corresponding voltage signals for filtering, and the obtained feedback signals are sent into the DSP for operation and comparison to obtain control signals of power conversion and also sent into the fault protection circuit; the switching value reading circuit is accessed through a dry contact, and the DSP reads signals; after DSP sends drive signal and carries out the electric frequency conversion, drive circuit controls IGBT, realizes the drive to IGBT, the drive of blockade IGBT when fault protection circuit discerns feedback signal's anomaly has the function of data latch, and buzzer reports to the police, and communication circuit includes the communication with control and collection board, realizes intelligent management.
The +12 auxiliary power supply is arranged in the DSP peripheral circuit, the +12 auxiliary power supply is connected to the opposite layer PCB through the two through holes, and the grounding is used for enhancing heat dissipation.
Compared with the prior art, the invention has the following beneficial effects:
the power supply technology is uniformly allocated by a superior EMS, multiple modes such as an alternating current power supply, photovoltaic power generation, a storage battery and the like are used as power supplies to form complementary input, the complementary input is converged into a direct current bus to carry out electric energy transmission, and the electric energy is transmitted to a server of a data center and each internal direct current load through direct current conversion and power distribution of each power module. The direct current bus system can be subsequently connected in parallel to remove multiple power supply inputs such as alternating current and photovoltaic input, the storage battery serves as a standby power supply of the whole system and regulates peak for the photovoltaic input, the uninterrupted operation of the whole system can be realized, and the reliability and stability of the data center system are greatly improved.
Drawings
FIG. 1 is a schematic diagram of a DC bus based modular data center system;
FIG. 2 is a schematic diagram of a DC750V/DC240V power conversion module;
FIG. 3 is a schematic diagram of a data center system solution;
FIG. 4 is a system diagram of the interior of the intelligent DC-DC converter device;
FIG. 5 is a schematic diagram of a DC-DC converter module;
fig. 6 is a wiring schematic diagram of an internal conversion system and a monitoring unit of the intelligent DC-DC converter.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1, the power supply technology of the modular data center based on the dc bus of the present invention is composed of a power input module, a power conversion module, and a power distribution module. The power input module is divided into photovoltaic input, alternating current input (380V-110 KV) and storage battery input, three power supplies are uniformly converted into direct current through a PSC (energy storage converter), and the direct current is input into the power conversion module. The power conversion module converts 750V direct current into 240V direct current after two DCDC conversions, and part of the 240V direct current is sent to a direct current load, and then the 240V direct current is converted into direct current load such as 48V direct current available for a server. All modules receive unified management of upper EMS, the EMS performs monitoring, configuration, alarm and other functions, and the stability of the DC bus is maintained.
Referring to fig. 2, the DC750V/DC240V power change unit of the invention performs an isolation function, and includes a plurality of sub-modules, an input EMC filter circuit, a three-level wiener rectification circuit, a three-level LLC resonant high-efficiency converter, an output control protection circuit, and an output EMC filter circuit, which are connected in series in sequence. The auxiliary power supply is connected in parallel, and all circuits are uniformly controlled by a DSP (digital signal processor) to carry out control and communication. The input EMC filter circuit meets strict EMC requirements, output voltage and current signals are uniformly managed by the DSP module, the output current signals are connected with the module and compared with average current to obtain error values, the voltage output of each module is adjusted, the output current of the module is further adjusted, three-level Vienna conversion and LLC resonant soft switch efficient high-performance topological combination is achieved, and wide-range input and wide-range output can be achieved through high-power density design. The auxiliary power supply provides voltage for the DSP.
Referring to fig. 3, the system adopts a dual-power dual-bus power supply mode. The input power supply of the power supply system has various modes such as an AC (alternating current) power supply, photovoltaic power generation, a storage battery and the like, wherein direct current input by photovoltaic is inverted into alternating current by an INV (inverter), and then rectified into 750V direct current by a PSC (energy storage converter); the method comprises the following steps that externally input alternating current (380V-110 kV) is uniformly converted to a target voltage through a transformer and rectified into 750V direct current through a PSC; the storage battery is converted into 750V direct current through PSC; the inverter INV, the bidirectional DC/DC and the DC/AC energy storage converter PCS respectively automatically adjust output and are uniformly converged into a 750V direct current bus; the power is distributed to each lower circuit through the direct current power distribution cabinet in a unified mode, the power distribution cabinet is internally divided into two circuits, power supply interruption caused by the fact that one circuit fails is prevented, then the output 750V direct current is output through the DC750V/DC240V power conversion module and 240V direct current is converged into a bus bar, the power is distributed through the direct current column head cabinet in a unified mode, and the direct current is converted into 48V direct current through the DC240V/DC48V to supply power to the data center and the server. Under normal conditions, the storage battery is in a charging state, can be used as a standby, and also has a peak regulation function for photovoltaic power generation input. If the external alternating current input is interrupted, the storage battery and the photovoltaic input can rapidly supply electric energy, and uninterrupted power supply is realized. Similarly, the photovoltaic input is interrupted, the continuous operation of the whole system can be ensured by the input of other two paths of power supplies, and meanwhile, the system adopts a dual-power-supply dual-bus architecture, so that the failure of one path is avoided, and the reliability is high.
Referring to fig. 4, the intelligent DC (750V)/DC (240V) converter apparatus of the present invention includes a DC input system, a DC-DC converter module, a monitoring system, a DC output power distribution unit, and a heat dissipation system.
The direct current input system inputs DC750V direct current, power conversion is carried out through the direct current-direct current conversion system, the power conversion of the direct current-direct current conversion system is controlled, managed and monitored by taking a Digital Signal Processor (DSP) as a core, voltage conversion of the direct current 750V-direct current 240V is realized, and the direct current output power distribution unit outputs the 240V direct current to supply power to a load.
The monitoring system is provided with an operation interface, so that the monitoring management of the state and the performance of the direct current-direct current conversion system and the whole system is realized, an RS485 communication interface and a communication protocol are reserved, the data uploading can be carried out with background communication, and the monitoring system is brought into a previous-stage monitoring system to realize remote centralized management and monitoring.
Converter externally mounted has hot air exitus and cold wind import, and converter device is inside to have forced air cooling heat abstractor, at bottom installation fan, realizes giving off of inside heat, and the fan is managed by monitored control system is unified, can effectual reduction equipment inside operation energy consumption.
Referring to fig. 5, the dc-dc converter module of the present invention is a key module for realizing electric energy conversion, and is responsible for converting 750V dc into 240V dc, and is composed of a power circuit and a pure DSP digital control circuit, the power circuit has a filtering and EMC module and a power conversion module, both input and output are subject to strict requirements for filtering and EMC, a three-level vienna conversion and LLC resonant soft switching converter topology combination, contains a transformer, has a high frequency isolation function, and realizes electric energy conversion from dc to ac and then from ac to dc. The DSP digital control circuit provides control signals required by power conversion, voltage and current on two sides of the converter pass through the detection circuit and are converted into corresponding voltage signals for filtering, and the obtained feedback signals are sent into the DSP for operation and comparison and are simultaneously sent into the fault protection circuit. After the DSP sends out a driving signal to carry out electric frequency conversion, the driving chip controls the IGBT to realize the driving of the IGBT, and the fault protection circuit blocks the driving of the IGBT when recognizing the abnormality of the feedback signal. And has the function of data latching, can realize intelligent management. The pure DSP digital control circuit comprises a sampling circuit for sampling voltage and current, a driving circuit of a collecting plate, a fault protection circuit, a communication circuit, a buzzer and a switching value reading circuit.
Inside +12 auxiliary power source passes through two via holes to the relative layer PCB, ground connection, reinforcing heat dissipation.
Referring to fig. 6, in the intelligent DC (750V)/DC (240V) converter device of the present invention, 750V DC is input through a DC bus, the inside is divided into two rows, a plurality of DC-DC converter modules in each row are connected in parallel, a DC load is equally divided, the DC load is uniformly connected to a monitoring unit, the monitoring unit includes a display screen, a background control and a background communication, and the converted DC is uniformly merged into the 240V DC bus.
The invention has the advantages that the grade of the input and output direct current voltage is converted into 750V (+ 5 percent is converted into 240V, the input voltage range is wider, the range is 200V to 1000V, the front stage can be accessed to direct current power supplies with various voltage ranges, particularly can be accessed to photovoltaic power generation with larger voltage fluctuation, the output voltage range is wider, the output voltage can be automatically regulated from 750V to 50V, a three-level Vienna conversion and LLC resonant converter topology structure is adopted, the circuit layout is optimized, and the high-frequency isolation function is realized.
The converter is externally provided with the hot air outlet and the cold air inlet, the converter device is internally provided with the air cooling heat dissipation device, the bottom of the converter device is provided with the fan, the dissipation of internal heat is realized, and the fan is uniformly managed by the monitoring system, so that the internal operation energy consumption of equipment can be effectively reduced.
As a further scheme of the invention, the three-level Vienna conversion and LLC resonant converter topological structure optimizes the circuit layout and has a high-frequency isolation function.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A modularized data center system based on a direct current bus is characterized by comprising
The power supply system comprises a power supply input module, a DC/DC power conversion module, a power distribution module and an EMS system;
the power input module is divided into photovoltaic input, 380V-110 KV alternating current input and storage battery input, three paths of power supplies are uniformly converted into direct current through the energy storage converter PSC and input into the DC/DC power conversion module;
the DC/DC power conversion module is used for converting 750V direct current into 240V direct current for two times, one path of direct current is sent to a direct current load, and the other path of direct current is used for converting the 240V direct current into 48V direct current which can be used by the direct current load;
the power distribution module is used for distributing power to each direct current load in the data center;
the EMS system collects real-time remote sensing information, can monitor the on-off state of each element and the change of voltage, current and phase angle according to the power network topology and the connection relation of each element, simultaneously estimates the condition of a line, and can monitor and correct remote sensing error information when the load flow distribution of the line and a transformer is formed; the EMS system can also optimize the electric energy quality by switching the capacitor through adjusting the switch state according to the feedback reactive information, and when the direct current system breaks down, the fault analysis and calculation are carried out, and an alarm is sent out for avoiding multiple faults.
2. The DC-bus-based modular data center system according to claim 1, wherein the DC/DC power conversion module with the isolation function comprises a Digital Signal Processor (DSP) and an input EMC filter circuit, a three-level Vienna rectification circuit, a three-level LLC resonant high-efficiency converter, an output control protection circuit and an output EMC filter circuit which are connected in series in sequence; the power conversion module has the working principle that the EMC filter circuit is input to meet strict EMC requirements, output voltage and current signals are uniformly managed by the digital signal processor DSP, the module is connected with output current signals and is compared with average current to obtain error values, the voltage output of each module is adjusted, the output current of the module is further adjusted, the output current is sent into the three-level Vienna rectifying circuit and the three-level LLC resonant efficient converter to carry out voltage grade conversion, the converted direct current is converted into 240V direct current, and then the strict EMC and filter circuit are sent into the power distribution unit; the input ends of the three-level Vienna rectifying circuit, the three-level LLC resonant high-efficiency converter, the output control protection circuit and the output EMC filter circuit are connected with the output end of a DSP (digital signal processor), the input EMC filter circuit is connected with an auxiliary power supply in parallel, and the DSP is also connected with a control and communication module.
3. The modular data center system based on the direct-current bus of claim 1, wherein the modular data center system adopts a double-power-supply double-bus power supply mode, and an input power supply of a power supply input module comprises an alternating-current AC power supply, photovoltaic power generation and a storage battery;
the direct current input by the photovoltaic is inverted into alternating current through an inverter INV and rectified into 750V direct current through a PSC energy storage converter;
380V-110 kV alternating current input from the outside is uniformly converted to a target voltage through a transformer and rectified into 750V direct current through a PSC;
the storage battery is converted into 750V direct current through PSC;
the inverter INV, the bidirectional DC/DC and the DC/AC energy storage converter PCS respectively automatically adjust output and are uniformly merged into a 750V direct current bus.
4. The modular data center system based on the direct current bus as claimed in claim 1, wherein under normal conditions, the storage battery is in a charging state, can be used as a standby, and also has a peak shaving function for inputting photovoltaic power generation; if the external alternating current input is interrupted, the storage battery and the photovoltaic input can rapidly supply electric energy, so that uninterrupted power supply is realized; similarly, the photovoltaic input is interrupted, the continuous operation of the whole system can be ensured by the input of other two paths of power supplies, and meanwhile, the system adopts a dual-power-supply dual-bus architecture, so that the failure of one path is avoided, and the reliability is high.
5. The dc bus-based modular data center system of claim 1, wherein the dc bus has three voltage levels, including 750V dc bus, 240V dc bus, and 48V dc bus.
6. The modular data center system based on the direct current bus as claimed in claim 1, wherein the DC/DC power conversion module is used for realizing wide voltage input and output, has high frequency isolation by three-level LLC resonance, has a wide input voltage range DC of 200-1000V, and automatically adjusts output voltage DC of 750-50V.
7. The DC bus-based modular data center system of any of claims 1-6, wherein the DC/DC power conversion module comprises
The direct current input system is used for inputting two paths of DC750V direct current;
the direct current-direct current converter modules are connected in parallel with one another and are used for performing power conversion on direct current input by the direct current input system and realizing voltage conversion of 750V direct current to 240V direct current;
the direct current output power distribution unit is used for outputting 240V direct current to supply power to a load;
the monitoring system comprises an intelligent instrument and a display screen, wherein the intelligent instrument is used for collecting power parameters and is arranged on an incoming line, a feeder line and an outgoing line loop of the converter device, the intelligent instrument is connected to the display screen, the display screen displays curves of the power parameters in real time, and when various power parameters are abnormal, an alarm is given; the monitoring system is also reserved with an RS485 communication interface and a communication protocol, and can be incorporated into a previous-level monitoring system to realize remote centralized management and monitoring.
8. The dc bus-based modular data center system of claim 7, wherein the dc-to-dc converter module comprises a power circuit and a pure DSP digital control circuit; the power circuit comprises a filtering and EMC module and a power conversion module;
the input and the output of the power conversion module are subject to strict filtering and EMC requirements, the power conversion module is a three-level Vienna conversion and LLC resonant soft switching converter topological combination, contains a transformer, has a high-frequency isolation function, and realizes the conversion of electric energy from direct current to alternating current and then from alternating current to direct current;
the pure DSP digital control circuit comprises a DSP chip and a DSP peripheral circuit.
9. The modular data center system based on the direct-current bus as claimed in claim 8, wherein the DSP peripheral circuit includes a sampling circuit for sampling voltage and current, a driving circuit of a collecting board, a fault protection circuit, a communication circuit, a buzzer, and a switching value reading circuit, the voltage and current at the input and output sides of the converter pass through the sampling circuit and are converted into corresponding voltage signals for filtering, and the obtained feedback signals are sent into the DSP for operation and comparison to obtain control signals for power conversion and also sent into the fault protection circuit; the switching value reading circuit is accessed through a dry contact, and the DSP reads signals; after DSP sends drive signal and carries out the electric frequency conversion, drive circuit controls IGBT, realizes the drive to IGBT, the drive of blockade IGBT when fault protection circuit discerns feedback signal's anomaly has the function of data latch, and buzzer reports to the police, and communication circuit includes the communication with control and collection board, realizes intelligent management.
10. The modular data center system based on direct current buses of claim 9, characterized in that +12 auxiliary power supply is arranged inside the DSP peripheral circuit, and the +12 auxiliary power supply is connected to the opposite layer PCB through two via holes and grounded for enhancing heat dissipation.
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| CN113675870A (en) * | 2021-09-12 | 2021-11-19 | 威胜电气有限公司 | High-density optical storage inversion integrated base station power supply and control method |
| CN113949281A (en) * | 2021-10-19 | 2022-01-18 | 浙江德升新能源科技有限公司 | PCS black start circuit |
| CN117614047A (en) * | 2024-01-24 | 2024-02-27 | 西安为光能源科技有限公司 | Medium-voltage direct-hanging data center power supply system |
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