WO2012055236A1 - 风光柴市电一体化供电系统 - Google Patents

风光柴市电一体化供电系统 Download PDF

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Publication number
WO2012055236A1
WO2012055236A1 PCT/CN2011/074819 CN2011074819W WO2012055236A1 WO 2012055236 A1 WO2012055236 A1 WO 2012055236A1 CN 2011074819 W CN2011074819 W CN 2011074819W WO 2012055236 A1 WO2012055236 A1 WO 2012055236A1
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WIPO (PCT)
Prior art keywords
power
module
output
solar
subsystem
Prior art date
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PCT/CN2011/074819
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English (en)
French (fr)
Inventor
董斌
张中伟
俞卫
叶余胜
Original Assignee
上海致远绿色能源有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海致远绿色能源有限公司 filed Critical 上海致远绿色能源有限公司
Priority to EP11835510.6A priority Critical patent/EP2528181B1/en
Priority to PL11835510T priority patent/PL2528181T3/pl
Priority to ES11835510T priority patent/ES2741429T3/es
Priority to US13/520,108 priority patent/US9130387B2/en
Priority to DK11835510.6T priority patent/DK2528181T3/da
Publication of WO2012055236A1 publication Critical patent/WO2012055236A1/zh

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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
    • H02J1/102—Parallel operation of dc sources being switching converters
    • 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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • 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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • 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
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/10—The dispersed energy generation being of fossil origin, e.g. diesel generators
    • 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
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/22—The renewable source being solar energy
    • H02J2300/24—The renewable source being solar energy of photovoltaic origin
    • 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
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/28—The renewable source being wind energy
    • 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
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/40—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation wherein a plurality of decentralised, dispersed or local energy generation technologies are operated simultaneously
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/60—Planning or developing urban green infrastructure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/13—Energy storage using capacitors

Definitions

  • the invention relates to the field of power generation and power supply technology, in particular to a power supply system integrating new energy and traditional energy sources.
  • the communication device In a communication base station, the communication device needs to be powered by a DC power source of a corresponding voltage level.
  • the traditional communication base station power supply system uses the mains power supply and the diesel generator to reserve power, and converts the mains or diesel to the direct current with a voltage level matched by the communication device through the switching power supply.
  • the need to introduce new energy sources is becoming increasingly urgent.
  • more and more communication base stations adopt wind-solar complementary power supply systems, with wind power generation and solar power generation as the main power supply equipment of the system, with commercial power and diesel power as backup power sources. This not only reduces the energy consumption of the system, but also achieves energy saving and emission reduction, and improves the reliability of the power supply, thereby further ensuring the communication quality.
  • the wind and solar hybrid power supply system for communication mainly has the following four modes: The first one is independent power supply of the wind and solar hybrid power supply system, and the system directly converts wind energy and solar energy into -48V or 24V. DC power, charging the battery and powering the communication device.
  • the second is a combination of wind and solar hybrid power supply system, inverter, and switching power supply. This type of system converts wind and solar energy into direct current, stores the electrical energy in the battery pack, and then converts it into three phases through the inverter. AC power, input switching power supply, the battery is charged by the switching power supply, and the communication device is powered.
  • the third type is composed of a wind-solar complementary power supply system and a switching power supply.
  • the wind-solar complementary power supply system and the switching power supply work independently. Under normal circumstances, the wind and solar hybrid power supply system supplies power to the system. When the wind and light resources are insufficient, The mains or diesel generator is cut in and the system is powered by the switching power supply.
  • the fourth type is the centralized power supply system of Fengshi Chai Power.
  • the wind and solar hybrid power supply system and the switching power supply module are integrated and managed together. Under normal circumstances, the wind and solar hybrid power supply system supplies power to the system, and the system directly converts wind energy and solar energy into -48V or 24V DC, when the wind and light resources are insufficient, cut the mains or diesel generator into the system and supply power to the system through the switching power supply module.
  • the above four kinds of communication wind and solar hybrid power supply systems all have certain deficiencies.
  • the first mode only the wind-solar complementary power supply system is used for power supply.
  • a large-capacity battery pack must be provided, and the battery pack needs to be deeply charged and discharged frequently. This results in a high battery composition and a short life, which increases the overall cost of the system.
  • inverter switching is required, and a set of high-voltage battery packs needs to be added, which not only reduces system efficiency but also increases overall cost.
  • the wind-solar complementary power supply system and the switching power supply work independently, so that there are multiple battery management systems in the system, which is not conducive to the management of the battery.
  • the charging current is difficult to control, which easily causes the charging current of the battery to pass. Large, reducing battery life.
  • the fourth mode simply superimposes the wind-solar complementary power supply system and the switching power supply. Although the quality of the battery management is improved, the system is relatively large, costly, and inefficient.
  • the object of the present invention is to provide a hybrid power supply system capable of meeting the needs of general communication DC power, effectively utilizing wind energy, solar energy, utility power and diesel generator electrical energy, integrating new energy and traditional energy sources.
  • the present invention provides a wind power electric integrated power supply system, comprising at least one subsystem selected from a wind power generation subsystem or a solar power generation subsystem, at least one diesel electronic system, and a direct current flow unit. And a master unit.
  • each DC output in the wind power subsystem, the solar power subsystem, and the diesel electronic system is connected to the DC bus unit for DC sink;
  • the main control unit is set according to the output voltage and current of the DC bus unit, The required power calculated from the output voltage and current of the DC power distribution unit, and the maximum output power calculated from the operating state of each wind power subsystem and solar power subsystem, selected in the wind power subsystem and the solar subsystem A set of subsystems that operate the subsystem group while the remaining subsystems are stopped, the sum of their maximum available output power being greater than or equal to the required power and minimizing the number of subsystems included in the subsystem group.
  • the wind power diesel electric power integrated power supply system of the present invention adopts all or most of the operation when the output power of the wind power generation subsystem and the solar power generation subsystem is relatively low or the load power is relatively high, Meet the system power demand; when the wind power subsystem and the solar power subsystem have higher output power or relatively lower load power, they only need a few operations, which saves energy and prolongs the service life of the equipment.
  • each wind power subsystem also includes a wind energy control module.
  • the wind energy control module includes a power conversion module, a power control module, and a protection module.
  • the power control module is configured to automatically find an optimal power point of the fan, thereby controlling the output power of the fan to achieve optimal power tracking, and the power control module is further configured to be based on the frequency of the three-phase alternating current and the direct current The voltage and current are used to control the protection module.
  • each solar power generation subsystem includes a solar control module.
  • the solar control module includes a power control module configured to automatically find an optimal power point of the solar component to achieve its maximum power tracking, and the power control module is further configured to be based on the output Power and protection commands from the master unit control the action of the protection module.
  • the diesel electronic system comprises a rectification switching module
  • the rectification switching module comprises a switching module, a diesel generator self-starting module and a rectifying module for converting alternating current into direct current.
  • the switching module is set to be determined according to the condition of the mains, diesel, and the battery or by manually switching the switching command issued by the autonomous control unit to select the mains, the diesel, or the system; and,
  • the diesel generator self-starting module is configured to control activation or deactivation of the diesel generator in accordance with a control command issued by the switching module.
  • the wind power electric integrated power supply system of the present invention further comprises at least one high frequency rectification module, the input end of which is connected to the DC convergent unit, and the output end thereof is connected to the DC power distribution unit, the DC
  • the power distribution unit includes at least one battery pack.
  • the main control unit is configured to control an output voltage and current of each high frequency rectification module according to an operating state of the DC power distribution unit and an output voltage and current of the DC convergent unit.
  • the battery pack configuration is reduced by the multiplexing of the high-frequency rectifier module and the continuity of the primary energy supply, thereby greatly reducing the system cost.
  • the invention integrates wind energy, solar energy, utility power and diesel generator into one, and adopts distributed control and centralized management to greatly improve the efficiency and operational reliability of the whole system; Independent control of the electronic system and solar power subsystem, maximum power tracking and efficiency adjustment to maximize the overall efficiency of the system and the balance between the various control modules.
  • FIG. 1 is a schematic structural view of a wind power Chai electric power supply system according to the present invention.
  • FIG. 2 is a schematic diagram of a wind power generation subsystem of the integrated lighting power supply system of the Fengming Chai electric power;
  • FIG. 3 is a schematic diagram of a solar power generation subsystem of the integrated lighting power supply system of the Fengguang diesel power supply;
  • Figure 4 is a schematic diagram of a diesel electronic system of the Fengguang Chai electric power supply system according to the present invention.
  • FIG. 5 is a schematic structural diagram of a main control unit of the integrated power supply system of the Fengguang diesel power supply according to the present invention.
  • a wind power diesel electric integrated power supply system suitable for a communication system, the specific components thereof mainly include: a plurality of wind power generation subsystems 1 and a plurality of solar power generation subsystems 2 , a diesel electronic system 3 , a direct current flow unit 4 , a main control unit 5 , a plurality of high frequency rectifier modules 6 and a constant current power distribution unit 7 .
  • each wind power generation subsystem 1 includes a fan 11 and Wind energy control module 12 .
  • the three-phase AC output of the fan 11 is connected to the input of the wind energy control module 12; then, the DC output of the wind energy control module 12 is connected to the DC bus unit 4 .
  • each solar power generation subsystem 2 includes a solar module 21 and Solar control module 22 .
  • the output of the solar module 21 is connected to the input of the solar control module 22; then, the DC output of the solar control module 22 is connected to the DC bus unit 4 .
  • the circuit principle of Chaishi Electronic System 3 is shown in Figure 4.
  • the diesel electronic system 3 includes the mains 31 and the diesel generator 32. Rectifier switching module 33 .
  • the AC output of the mains 31 and the diesel generator 32 is connected to the AC input of the rectification switching module 33.
  • Diesel generators 32 The self-start control port is connected to the self-start signal output of the rectifier switching module 33.
  • the DC output of the rectifier switching module 33 is connected to the DC bustling unit 4 .
  • each wind power subsystem 1, solar power subsystem 2, Chai electronic system 3 The DC output is connected to the input of the DC bustling unit 4 for DC sinking.
  • the input ends of the plurality of high frequency rectifier modules 6 are connected to the output of the DC bus unit 4; the high frequency rectifier module 6 The output is connected to the DC power distribution unit 7 .
  • the DC power distribution unit 7 includes a battery management module 71, a primary load management module 72, and a secondary load management module 73 .
  • the input of the battery management module 71 is connected to the output of the corresponding high frequency rectifier module 6, and the output thereof is connected to an external battery pack; the primary load management module 72 and the secondary load management module 73 The input is connected to the output of the corresponding high frequency rectifier module 6, and the output is connected to the power input port of the external device.
  • the wind energy control module 12 of the wind power generation subsystem 1 of the wind power electric integrated power supply system 12
  • a power conversion module 121 a power control module 122, and a protection module 123 are included.
  • the input of the power conversion module 121 is connected to the three-phase output of the fan 11; the power conversion module 121
  • the outputs are connected to the input of the protection module 123 and the DC bus unit 4, respectively.
  • a data sampling port of the power control module 122 is coupled to the power conversion module 121
  • the input and output terminals of the power control module 122 are connected to the power conversion module 121 and the protection module 123.
  • Power Control Module 122 Sampling and Calculating Fans 11
  • the rotational speed and output power are then sent by the main control unit 5 to the power conversion module 121 and the protection module 123 according to the calculation result.
  • the solar power control module 2 of the solar power generation subsystem 2 of the wind power electric integrated power supply system according to the present invention 22 A power control module 221 and a protection module 222 are included.
  • the inputs of the power control module 221 and the protection module 222 are both connected to the output of the solar module 21; the power control module 221 The output is connected to the DC bus unit 4 .
  • the control signal output port of the power control module 221 is connected to the protection module 222.
  • Power control module 221 The output voltage and the output current are sampled and calculated, and then the main control unit 5 sends a control signal to the protection module 222 according to the calculation result.
  • the diesel electronic system 3 of the wind power electric integrated power supply system includes a rectification switching module 33.
  • the rectifier switching module 33 includes a switching module 331, a diesel generator self-starting module 332, and a rectifier module 333 for converting alternating current to direct current.
  • the switching module 331 It is set to be determined according to the condition of the mains 31, Chaidian 32 and the battery or by manual operation of the switching command issued by the autonomous control unit 5 to select the mains 31, Chaidian 32 The system is cut in or out; and the self-starting module 332 of the diesel generator is configured to control the activation or deactivation of the diesel generator 32 based on control commands issued by the switching module 331.
  • the main control unit 5 of the wind power electric integrated power supply system includes a main processor 51. , the upper computer communication module 52, the lower computer communication module 53 , the data acquisition module 54 , the node management module 55 , the load management module 56 , the human machine dialogue module 57 .
  • the upper computer communication module 52 has one end connected to the communication port of the external upper computer, and the other end is connected to the main processor 51 to implement the main control unit 5 Communication with an external host computer.
  • the lower computer communication module 53 has one end connected to the wind energy control module 12, the solar control module 22, the rectification switching module 33 and the high frequency rectification module 6
  • the communication port is connected to the main processor 51 at the other end to implement communication between the main control unit 7 and these modules.
  • the input of the data acquisition module 54 is connected to the DC bus unit 4 and the DC power distribution unit 7
  • the output is connected to the main processor 51.
  • One end of the node management module 55 is connected to the wind energy control module 12, the solar control module 22, the rectification switching module 33, and the DC power distribution unit 7
  • the node signal port and the other end are connected to the main processor 51 to implement reading of the input node and control of the output node.
  • the output of the load management module 56 is connected to the DC power distribution unit 7
  • the input terminal is connected to the main processor 51 to implement management of the load.
  • One end of the man-machine dialogue mode 57 is connected to the liquid crystal, the button and the indicator light, and the other end is connected to the main processor 51 to realize the man-machine dialogue function.
  • An input of the main control unit 5 includes a plurality of wind energy control modules 12 and a solar control module through a lower computer communication module 53. 22, the signal of the rectification switching module 33 and the high frequency rectification module 6; the other input of the main control unit 5 also includes the data acquisition module 54 from the DC convergent unit 4 and the DC power distribution unit 7 The collected data; an output of the main control unit 5 includes an instruction sent by the load management module 56 to the DC power distribution unit 7; and another output of the main control unit 5 is sent to the wind energy control module through the node management module. 12, solar control module 22, rectifier switching module 33 and DC power distribution unit 7 control signals.
  • the specific working mode of the integrated lighting power supply system according to the present invention is as follows:
  • the fan 11 converts the captured wind energy into three-phase AC power and transmits it to the wind energy control module 12 via the power conversion module 121. Converted to high voltage DC power and transmitted to DC bus unit 4 .
  • the power control module 122 controls the operation of the power conversion module 121 while monitoring the fan 11 speed and the output voltage and output current to make the fan 11 Always work at the optimum power point. When the fan 11 rotates too fast, the output voltage is too high, the output current is too large, or according to the current limiting command sent by the main control unit 5, the power control module 122 moves to the protection module.
  • the solar module 21 converts the captured solar energy into high voltage direct current electrical energy, which is transmitted to the solar control module 22 and passes through the solar control module 22
  • the power control module 221 in the middle is adjusted to the maximum power tracking mode and then transmitted to the DC bus unit 4 .
  • the power control module 221 is set to be based on the output power and from the main control unit 5
  • the protection command controls the action of the protection module 222.
  • the input end of the high frequency rectification module 6 is connected to the DC convergent unit 4, and the wind energy control module 12 and the solar control module 22
  • the high-voltage DC power output from the rectifier switching module 33 is converted to -48V or 24V DC, and then output to the DC power distribution unit 7 .
  • the DC power distribution unit 7 distributes the power output from the high-frequency rectifier module 6 to charge the battery and supply power to the load.
  • the main control unit 5 detects the output voltage and current of the DC bus unit 4 and the DC power distribution unit through the data acquisition module 54. Output voltage and current, calculate the required power of the system; acquire each wind power subsystem 1 and solar power subsystem through the communication port 2 Operating states, based on their speed power characteristics and voltage and current characteristics, respectively calculate their maximum output power . Then selecting a set of subsystems in the wind power subsystem and the solar subsystem to operate the subsystem group, and the remaining subsystems are stopped, the sum of the maximum output power of the operation is greater than or equal to the required power and the subsystem is made The group contains the fewest number of subsystems.
  • the subsystem group For the selected subsystem group, control the subsystem's on, off, and reset states, and adjust the operating parameters of the operating subsystem to maximize its efficiency, including but not limited to: output current, output voltage, Input voltage, input current, protection voltage, protection current, response speed, etc.
  • the Chai electronic system If the subsystem group that meets such requirements does not exist, then the Chai electronic system is operated in order. The mains supply of 3 is supplied with power. If the mains 31 is de-energized, the diesel generator 32 is operated to supply power. At the same time, the DC power distribution unit is detected by the main control unit 5 data acquisition module 54 The operating state and the output voltage and current of the DC bus unit 4 control the output voltage and current of each of the high frequency rectifier modules 6 according to the power requirements of the primary and secondary loads and the battery charging requirements.
  • the main control unit 5 turns to the rectification switching module. Send a command to start the backup power.
  • the rectifier switching module 33 automatically detects the current status of the mains 31. If the mains 31 exists, it issues a mains 31 switching command to the switching module to power the mains. If the mains 31 does not exist, a start command is issued to the self-starting module to start the diesel generator 32, and at the same time, a diesel-electric power switching command is issued to the switching module to Cut in. After the AC power is cut in, the rectifier module in the rectifier switching module 33 is rectified to DC power, and then output to the DC bustling unit 4 . Since the high frequency rectifier modules 6 are connected to the DC bus unit 4 Therefore, the rectified power can be directly converted to -48V or 24V DC without additional high frequency rectifier module 6 .
  • the advantage of the invention is that 1 Integrated design, integrating wind energy, solar energy, utility power and diesel generators into one, adopting decentralized control and centralized management, through the convergence of DC bus, realizes centralized control of multiple fans and multiple sets of solar modules, making the whole System reliability is greatly improved. 2 The efficiency is improved, and the independent control and power tracking of the wind power subsystem and the solar power subsystem ensure that each fan and each solar module can achieve maximum efficiency; at the same time, the system efficiency is maximized by fine-tuning the main control unit. And the balance between the various control modules. 3 The battery management capability is improved. Through the integrated design, multiple devices with battery management functions are avoided in the system, thereby avoiding overcharge and overdischarge of the battery, improving battery management quality, and effectively extending battery life.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Control Of Eletrric Generators (AREA)
  • Wind Motors (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Description

风光柴市电一体化供电系统 技术领域
本发明涉及发电供电技术领域，特别是一种集新能源与传统能源一体化的供电系统。
背景技术
在通信基站中，通信设备需要采用相应电压等级的直流电源供电。传统的通信基站供电系统采用市电供电、柴油发电机备用的方式进行供电，通过开关电源将市电或者柴电转换为与通信设备相匹配的电压等级的直流电。随着全球能源危机的日益加剧，以及移动通信的日益普及，引入新能源供电的要求也日益迫切。目前，越来越多的通信基站采用风光互补供电系统，以风力发电和太阳能发电作为系统的主供电设备，以市电、柴电作为备用电源。这样既降低了系统的能耗，实现节能减排，又提高了供电的可靠性，从而进一步保障了通信质量。
目前采用的通信用风光互补供电系统主要有以下四种模式：第一种是风光互补供电系统独立供电，这类的系统直接将风能和太阳能转换为 -48V 或者 24V 直流电，为蓄电池充电，为通信设备供电。第二种是由风光互补供电系统、逆变器、以及开关电源组合而成，这类的系统将风能和太阳能转换为直流电，将电能存储在蓄电池组中，然后通过逆变器转换为三相交流电，输入开关电源，由开关电源为蓄电池充电、为通信设备供电。第三种类型是由风光互补供电系统与开关电源组合而成，其风光互补供电系统和开关电源独立工作，正常情况下，由风光互补供电系统为系统供电，当风、光资源不足时，将市电或者柴油发电机切入，通过开关电源为系统供电。第四种为风光柴市电集中供电系统，将风光互补供电系统和开关电源模块整合在一起统一管理，正常情况下，由风光互补供电系统为系统供电，系统直接将风能和太阳能转换为 -48V 或者 24V 直流电，当风、光资源不足时，将市电或者柴油发电机切入，通过开关电源模块为系统供电。
以上四种通信用风光互补供电系统均存在一定不足之处。第一种模式中仅采用风光互补供电系统供电，为了能够确保系统在长时间的风、光资源不足情况下可靠供电，必须配备大容量的蓄电池组，且需要经常对蓄电池组进行深度充放电，导致蓄电池组成本高昂且寿命短，从而提高了系统的整体成本。第二种模式中采用逆变器转换，需要增加一组高电压的蓄电池组，不仅降低系统效率，还提高了整体成本。第三种模式中风光互补供电系统和开关电源独立工作，使系统存在了多个蓄电池管理系统，不利于蓄电池的管理，且两者同时工作时，充电电流不易控制，容易造成蓄电池的充电电流过大，降低蓄电池组寿命。第四种模式只是将风光互补供电系统和开关电源进行了简单叠加，虽然提高了蓄电池管理的质量，但是系统比较庞大，成本高昂，效率较低。
因此，确实需要一种适用于通信等直流供电的集新能源和传统能源一体化的新的混合供电系统。
发明内容
本发明的目的是提供一种能够满足一般通信用直流电需要的，有效利用风能、太阳能、市电和柴油发电机电能，集新能源和传统能源一体化的混合供电系统。
为实现上述目的，本发明提供了一种风光柴市电一体化供电系统，包括至少一个选自于风力发电子系统或太阳能发电子系统的子系统、至少一个柴市电子系统、一直流汇流单元以及一主控单元。其中，风力发电子系统、太阳能发电子系统、及柴市电子系统中的每个直流输出都连接至直流汇流单元进行直流汇流；主控单元被设置为根据由直流汇流单元的输出电压和电流、直流配电单元的输出电压和电流计算得到的需求功率，以及由每个风力发电子系统和太阳能发电子系统的运行状态计算得到的最大可输出功率，在风力发电子系统和太阳能子系统中选取一组子系统，令该子系统组运行，而其余子系统停止，使其运行的最大可输出功率之和大于或等于需求功率并且使该子系统组包含的子系统数量最少。
通过上述的技术方案，本发明的风光柴市电一体化供电系统，当风力发电子系统与太阳能发电子系统的输出功率较低或负载功率相对较高时，它们采取全部或大多数运行，以满足系统用电需求；当风力发电子系统与太阳能发电子系统的输出功率较高或负载功率相对较低时，它们只需少数运行，从而节约了能耗，延长设备的使用寿命。
有利的是，每个风力发电子系统还包含一风能控制模块。所述风能控制模块包含一功率转换模块、一功率控制模块以及一保护模块。其中所述功率控制模块被设置为自动寻找风机的最佳功率点，从而控制风机的输出功率以实现最佳功率跟踪，并且，所述功率控制模块还被设置为根据三相交流电的频率及直流电的电压和电流来控制所述保护模块。
进一步有利的是，每个太阳能发电子系统都包含一太阳能控制模块。太阳能控制模块包含一功率控制模块以及一保护模块，所述功率控制模块被设置为自动寻找太阳能组件的最佳功率点以实现其最大功率跟踪，并且，所述功率控制模块还被设置为根据输出功率以及来自主控单元的保护指令来控制所述保护模块的动作。
进一步有利的是，柴市电子系统包含一整流切换模块，所述整流切换模块包含一切换模块、一柴油发电机自启动模块和一将交流电转换为直流电的整流模块。其中，切所述换模块被设置为根据市电、柴电和蓄电池的状况确定的或者通过人工操作由自主控单元发出的切换指令来选择将市电、柴电切入或切出系统；并且，所述柴油发电机自启动模块被设置为根据切换模块发出的控制指令来控制柴油发电机的启动或关闭。
进一步有利的是，本发明的风光柴市电一体化供电系统还包括至少一个高频整流模块，其输入端连接至直流汇流单元，而其输出端则连接至一直流配电单元，所述直流配电单元中包含至少一个蓄电池组。其中，所述主控单元被设置为根据直流配电单元的运行状态和直流汇流单元的输出电压和电流，控制每个高频整流模块的输出电压和电流。并通过高频整流模块的复用以及一次能源供电连续性而使蓄电池组配置降低，从而大幅降低了系统成本。
本发明通过上述的技术方案，将风能、太阳能、市电、柴油发电机整合为一体，通过采用分散控制，集中管理的方式，使整个系统的效率和运行可靠性大为提高；并且通过风力发电子系统和太阳能发电子系统的独立控制、最大功率跟踪和效率的调节，实现系统整体效率的最大化以及各个控制模块之间的均衡。
附图说明
图 1 为根据本发明的风光柴市电一体化供电系统的结构示意图；
图 2 为本发明风光柴市电一体化供电系统的风力发电子系统的原理图；
图 3 为本发明风光柴市电一体化供电系统的太阳能发电子系统的原理图；
图 4 为本发明风光柴市电一体化供电系统的柴市电子系统的原理图；以及
图 5 为本发明风光柴市电一体化供电系统的主控单元的原理结构图。
具体实施方式
以下结合附图详细描述本发明的具体实施方式。
根据图 1 所示的本发明的具体实施例，一种适用于通信系统的风光柴市电一体化供电系统，其具体组成主要包括：多个风力发电子系统 1 、多个太阳能发电子系统 2 、一柴市电子系统 3 、一直流汇流单元 4 、一主控单元 5 、多个 高频整流模块 6 以及一直流配电单元 7 。
其中，风力发电子系统 1 的电路原理如图 2 所示，每个风力发电子系统 1 都包含风机 11 和 风能控制模块 12 。 风机 11 的三相交流输出连接至风能控制模块 12 的输入端；然后，风能控制模块 12 的直流输出端连接至直流汇流单元 4 。
太阳能发电子系统 2 的电路原理如图 3 所示，每个太阳能发电子系统 2 都包含 太阳能组件 21 和 太阳能控制模块 22 。太阳能组件 21 的输出端连接至太阳能控制模块 22 的输入端；然后，太阳能控制模块 22 的直流输出端连接至直流汇流单元 4 。
柴市电子系统 3 的电路原理如图 4 所示，柴市电子系统 3 包含市电 31 、柴油发电机 32 以及 整流切换模块 33 。 市电 31 和 柴油发电机 32 的交流输出端连接至整流切换模块 33 的交流输入端。柴油发电机 32 的自启动控制端口连接至整流切换模块 33 的自启动信号输出端。整流切换模块 33 的直流输出端连接至直流汇流单元 4 。
参考图 1 所示，各个风力发电子系统 1 、太阳能发电子系统 2 、柴市电子系统 3 的直流输出连接至直流汇流单元 4 的输入实现直流汇流。
多个高频整流模块 6 的输入端连接至直流汇流单元 4 的输出；高频整流模块 6 的输出端则连接至直流配电单元 7 。
直流配电单元 7 包括蓄电池管理模块 71 、一次负载管理模块 72 和二次负载管理模块 73 。蓄电池管理模块 71 的输入端连接至对应的高频整流模块 6 的输出端，其输出端连接至外部的蓄电池组；一次负载管理模块 72 和二次负载管理模块 73 的输入端连接至对应的高频整流模块 6 的输出端，其输出端连接至外部设备的电源输入端口。
现参考图 2 所示，根据本发明的这种风光柴市电一体化供电系统的风力发电子系统 1 的风能控制模块 12 包含功率转换模块 121 、功率控制模块 122 和保护模块 123 。功率转换模块 121 的输入端连接至风机 11 的三相输出端；功率转换模块 121 的输出端分别连接至保护模块 123 的输入端和直流汇流单元 4 。功率控制模块 122 的数据采样端口连接至功率转换模块 121 的输入端和输出端；功率控制模块 122 的控制信号输出端口连接至功率转换模块 121 和保护模块 123 。功率控制模块 122 采样并计算风机 11 的转速和输出功率，之后由主控单元5根据计算结果向功率转换模块 121 和保护模块 123 发出控制信号。
参考图 3 所示，根据本发明的这种风光柴市电一体化供电系统的太阳能发电子系统 2 的太阳能控制模块 22 包含功率控制模块 221 和保护模块 222 。功率控制模块 221 和保护模块 222 的输入端都连接至太阳能组件 21 的输出端；功率控制模块 221 的输出端连接至直流汇流单元 4 。功率控制模块 221 的控制信号输出端口连接至保护模块 222 。功率控制模块 221 采样并计算输出电压和输出电流，然后由主控单元5根据计算结果向保护模块 222 发出控制信号。
参考图 4 所示，根据本发明的这种风光柴市电一体化供电系统的柴市电子系统 3 包含一整流切换模块 33 ，整流切换模块 33 包含一个切换模块 331 、一个柴油发电机自启动模块 332 和一个将交流电转换为直流电的整流模块 333 。其中，切换模块 331 被设置为根据市电 31 、柴电 32 和蓄电池的状况确定的或者通过人工操作由自主控单元 5 发出的切换指令来选择将市电 31 、柴电 32 切入或切出系统；并且，柴油发电机的自启动模块 332 被设置为根据切换模块 331 发出的控制指令来控制柴油发电机 32 的启动或关闭。
参考图 5 所示，根据本发明的这种风光柴市电一体化供电系统的主控单元 5 包括主处理器 51 、上位机通信模块 52 、下位机通信模块 53 、数据采集模块 54 、节点管理模块 55 、负载管理模块 56 、人机对话模块 57 。
其中，上位机通信模块 52 一端连接至外部上位机的通信端口，另一端连接至主处理器 51 ，实现主控单元 5 与外部上位机的通信。下位机通信模块 53 一端连接至风能控制模块 12 、太阳能控制模块 22 、整流切换模块 33 和高频整流模块 6 的通信端口，另一端连接至主处理器 51 ，实现主控单元 7 与这些模块之间的通信。数据采集模块 54 的输入端连接至直流汇流单元 4 和直流配电单元 7 ，输出端连接至主处理器 51 。节点管理模块 55 的一端连接至风能控制模块 12 、太阳能控制模块 22 、整流切换模块 33 和直流配电单元 7 的节点信号端口，另一端连接至主处理器 51 ，实现对输入节点的读取以及对输出节点的控制。负载管理模块 56 的输出端连接至直流配电单元 7 ，输入端连接至主处理器 51 ，实现对负载的管理。人机对话模 57 的一端连接至液晶、按键和指示灯，另一端连接至主处理器 51 ，实现人机对话功能。
所述主控单元 5 的一种输入包括通过下位机通信模块 53 来自各个风能控制模块 12 、太阳能控制模块 22 、整流切换模块 33 和高频整流模块 6 的信号；主控单元 5 的另一种输入还包括通过数据采集模块 54 自直流汇流单元 4 和直流配电单元 7 采集的数据；主控单元 5 的一种输出包括负载管理模块 56 发送至直流配电单元 7 的指令；主控单元 5 的另一种输出包括通过节点管理模块发送至风能控制模块 12 、太阳能控制模块 22 、整流切换模块 33 和直流配电单元 7 的控制信号。
根据本发明的风光柴市电一体化供电系统的具体工作方式如下 ：
风机 11 将捕获的风能转化为三相交流电能，传输至风能控制模块 12 ，经功率转换模块 121 转换为高压直流电能，传输至直流汇流单元 4 。功率控制模块 122 控制功率转换模块 121 的运行，同时监测风机 11 转速和输出电压和输出电流，使风机 11 始终工作在最佳功率点上。当出现风机 11 转速过快、输出电压过高、输出电流过大时，或根据主控单元 5 发送的限流命令，由功率控制模块 122 向保护模块 123 发出指令，通过电子加载、极限保护等方式调节风机 11 的工作状态，保护后级设备。
太阳能组件 21 将捕获的太阳能转化为高压直流电能，传输至太阳能控制模块 22 ，经过太阳能控制模块 22 中的功率控制模块 221 进行最大功率跟踪等方式的调整后，传输至直流汇流单元 4 。 功率控制模块 221 被设置为根据输出功率以及来自主控单元 5 的保护指令来控制保护模块 222 的动作。
高频整流模块 6 的输入端连接至直流汇流单元 4 ，将风能控制模块 12 、太阳能控制模块 22 和整流切换模块 33 输出的高电压直流电能转化为 -48V 或者 24V 直流电，如此，然后输出至直流配电单元 7 。
直流配电单元 7 将高频整流模块 6 输出的电能进行分配，为蓄电池充电，为负载供电。
主控单元 5 通过数据采集模块 54 检测直流汇流单元 4 的输出电压和电流和直流配电单元 7 的输出电压和电流 ， 计算得到系统的需求功率； 通过通信端口获取每个风力发电子系统 1 和太阳能发电子系统 2 的运行状态，根据它们的转速功率特性曲线和电压电流特性曲线分别计算它们的最大可输出功率 。然后在风力发电子系统和太阳能子系统中选取一组子系统，令该子系统组运行，而其余子系统停止，使其运行的最大可输出功率之和大于或等于需求功率并且使该子系统组包含的子系统数量最少。对于被选择的子系统组，控制子系统的开、关以及复位状态，并调节处于运行状态的子系统的运行参数使其效率最大化，所述参数包括但不限于：输出电流、输出电压、输入电压、输入电流、保护电压、保护电流、响应速度等。若符合这样的要求的子系统组不存在，则按序优选运行柴市电子系统 3 的市电 31 进行供电，若市电 31 断电则运行柴油发电机 32 进行供电。同时， 通过主控单元 5 数据采集模块 54 检测直流配电单元 7 的运行状态和直流汇流单元 4 的输出电压和电流，根据一次负载和二次负载的功率需求及蓄电池充电需求，控制每个高频整流模块 6 的输出电压和电流。
当风、光资源不足，且蓄电池电压过低时，主控单元 5 向整流切换模块 33 发送启动后备电源的命令。整流切换模块 33 自动检测当前市电 31 的状况，若市电 31 存在，则向切换模块发出市电 31 切换命令，将市电 31 切入；若市电 31 不存在，则向自启动模块发出启动命令，将柴油发电机 32 启动，同时向切换模块发出柴电切换命令，将柴电 32 切入。交流电切入后，经过整流切换模块 33 中的整流模块整流为直流电后，输出至直流汇流单元 4 。由于高频整流模块 6 均连接在直流汇流单元 4 上，因此，可以将整流后电能直接转换为 -48V 或者 24V 直流电，不需要额外增加高频整流模块 6 。
不管是风能、太阳能还是市电、柴电，均由主控单元 5 控制，由同一组高频整流模块 6 进行功率转换，并汇入同一个直流配电单元 7 。这样有利于系统整体效率的最大化，并且避免了多个具有蓄电池管理功能的设备出现，提高了系统的可靠性。
本发明的优势在于， 1 ）一体化设计，将风能、太阳能、市电、柴油发电机整合为一体，采用分散控制，集中管理的方式，通过直流母线的汇流，实现多台风机和多组太阳能组件的集中控制，使整个系统可靠性大大提高。 2 ）效率提升，通过风力发电子系统和太阳能发电子系统的独立控制和功率跟踪，确保每一台风机和每一路太阳能组件均能发挥最大效率；同时通过主控单元的微调，实现系统效率的最大化以及各个控制模块之间的均衡。 3 ）蓄电池管理能力提升，通过一体化设计，避免了系统中出现多个具备蓄电池管理功能的设备，从而避免了蓄电池的过充电和过放电，提升蓄电池管理质量，有效延长蓄电池寿命。 4 ）成本节约，通过高频整流模块的复用，减少了系统中功率转换模块的数量，在降低系统的成本的同时，提升了系统可靠性；同时，整流切换模块的应用，使系统能够及时的启动后备电源，保证了系统一次能源供电的连续性，因此蓄电池组的配置可以降低，从而大幅降低系统成本。 5 ）节能与延长设备生命周期相结合，当风机与太阳能组件的输出功率较低或负载功率相对较高时，它们采取全部或大多数运行，以满足系统用电需求；当风机与太阳能组件的输出功率较高或负载功率相对较低时，它们只需少数运行。
尽管上面通过举例说明，已经描述了本发明较佳的具体实施方式，本发明的保护范围并不仅限于上述说明，而是由所附的权利要求给出的所有技术特征及其等同技术特征来定义。本领域一般技术人员可以理解的是，在不背离本发明所教导的实质和精髓前提下，任何修改和变化可能仍落在本发明权利要求的保护范围之内。

Claims (9)

  1. 一种风光柴市电一体化供电系统，其特征在于包括至少一个选自于风力发电子系统（1）或太阳能发电子系统（2）的子系统、至少一个柴市电子系统（3）、一直流汇流单元（4）、以及一主控单元（5），其中，所述风力发电子系统（1）、太阳能发电子系统（2）、及所述柴市电子系统（3）中的每个直流输出都连接至所述直流汇流单元（4）进行直流汇流； 所述主控单元（5）被设置为根据由直流汇流单元（4）的输出电压和电流、直流配电单元（7）的输出电压和电流计算得到的需求功率，以及由每个风力发电子系统（1）和太阳能发电子系统（2）的运行状态计算得到的最大可输出功率，在风力发电子系统（1）和太阳能子系统（2）中选取一组子系统，令该子系统组运行，而其余子系统停止，使其运行的最大可输出功率之和大于或等于所述需求功率并且使该子系统组包含的子系统数量最少。
  2. 根据权利要求1所述的风光柴市电一体化供电系统，其特征在于所述主控单元（5）被设置为对于被选择的子系统组，控制子系统的开、关以及复位状态，并调节处于运行状态的子系统的运行参数使其效率最大化，所述参数包括但不限于：输出电流、输出电压、输入电压、输入电流、保护电压、保护电流、或者响应速度。
  3. 根据权利要求1所述的风光柴市电一体化供电系统，其特征在于每个风力发电子系统（1）包括一风能控制模块（12），所述风能控制模块（12）包含一功率转换模块（121）、以及一功率控制模块（122），其中所述功率控制模块（122）被设置为自动寻找风机（11）的最佳功率点，从而控制风机（11）的输出功率，以实现最佳功率跟踪。
  4. 根据权利要求3所述的风光柴市电一体化供电系统，其特征在于所述风能控制模块（12）还包含一保护模块（123），所述功率控制模块（122）被设置为根据风机（11）输出的三相交流电的频率、经整流后的直流电压、直流电流以及来自主控单元（5）的保护指令来控制所述保护模块（123），通过电子加载、极限短路保护等方式实现对风机（11）以及后级设备的保护。
  5. 根据权利要求1所述的风光柴市电一体化供电系统，其特征在于每个太阳能发电子系统（2）都包含一太阳能控制模块（22），所述太阳能控制模块（22）包含一功率控制模块（221），所述功率控制模块（221）被设置为自动寻找太阳能组件（21）的最佳功率点以实现其最大功率跟踪。
  6. 根据权利要求5所述的风光柴市电一体化供电系统，其特征在于所述太阳能控制模块（22）还包含一连接至所述功率控制模块（221）的保护模块（222），所述功率控制模块（221）被设置为根据输出功率以及来自主控单元（5）的保护指令来控制所述保护模块（222）。
  7. 根据权利要求1所述的风光柴市电一体化供电系统，其特征在于所述柴市电子系统（3）包含一整流切换模块（33），所述整流切换模块（33）包含一个切换模块（331）和一个柴油发电机自启动模块（332），所述切换模块（331）被设置为根据市电（31）、柴油发电机（32）和蓄电池的状况确定的或者通过人工操作由自主控单元（5）发出的切换指令来选择将市电（31）、柴电（32）切入或切出系统，柴油发电机（32）的自启动模块（332）根据其切换模块（331）发出的控制指令来控制柴油发电机（32）的启动或关闭。
  8. 根据权利要求7所述的风光柴市电一体化供电系统，其特征在于所述整流切换模块（33）还包含一连接至所述切换模块（331）的整流模块（333），所述整流模块（333）将切入系统的交流电整流为直流电输出至所述直流汇流单元（4）。
  9. 根据上述权利要求任一项所述的风光柴市电一体化供电系统，其特征在于还包括至少一个高频整流模块（6），其输入端连接至所述直流汇流单元（4），而其输出端则连接至一直流配电单元（7），所述直流配电单元（7）中包含至少一个蓄电池组； 所述主控单元（5）被设置为根据所述直流配电单元（7）的运行状态和所述直流汇流单元（4）的输出电压和电流，控制每个高频整流模块（6）的输出电压和电流。
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PT2528181T (pt) 2019-08-29
EP2528181A4 (en) 2015-04-08
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