Charging system and control method for coordinated distribution of multi-terminal complementary input and output energy
A charging control method, input and output technology, applied in the direction of efficient vehicle charging, charging stations, electric vehicle charging technology, etc., can solve the problems of no single method, multi-energy coordinated control, etc., and achieve the effect of improving stability and charging efficiency
Active Publication Date: 2021-05-14
XJ POWER CO LTD +3
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Problems solved by technology
At present, new energy sources such as solar energy and wind energy have been combined with the electric energy of the distribution network through the AC / DC rectifier unit to form a multi-energy electric vehicle charging system, but how to coordinate and control the multi-energy during the charging process has not been studied. A method, how to adaptively and dynamically allocate the output power of multiple charging units according to the needs of the vehicle, and how to better coordinate the regulation of multiple energies during the charging process urgently needs to be solved
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[0020] The present invention provides a charging system for coordinated distribution of multi-terminal complementary input and output energy. The charging system is based on a common DC bus topology. unit; the AC / DC rectifier unit converts the AC power into DC power, and transmits the power to the public DC bus, and can also convert the DC power on the public DC bus into AC power for the distribution network; the DC / DC charging unit converts the DC bus The DC power on the vehicle is sent to the electric vehicle after voltage regulation; the photovoltaic unit converts light energy into DC power and sends it to the public DC bus; the energy storage unit can send the DC power on the public DC bus to the energy storage battery after voltage regulation. The DC power of the energy storage battery can be adjusted and sent to the public DC bus; the monitoring part includes an energy coordination control unit, a rectification load control unit, a charging load control unit, a photovolta...
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The invention relates to a charging system and a control method for coordinated distribution of multi-terminal complementary input and output energy. By connecting the multi-terminal input energy of the common DC bus, the output power of multiple charging units is adaptively and dynamically allocated according to the vehicle demand. When the vehicle is charging, the energy coordination control unit uploads the charging demand power and the power load of the transformer according to the charging load control unit. state, control the output power of the AC / DC rectifier unit, control the output power of the DC / DC charging unit, control the electric energy flow and power of the energy storage unit, and control the output power of the photovoltaic unit, so as to complete the The charging load, rectification load, and distributed energy (energy storage, photovoltaic) coordinated regulation function during the charging process improve the stability and charging efficiency of the charging network.
Description
technical field [0001] The invention relates to the field of electric vehicle charging, in particular to a multi-terminal complementary input and output energy coordinated distribution charging system and a control method. Background technique [0002] The power of electric vehicles comes from power batteries, and the slow charging speed and short cruising range of power batteries have always been the key factors restricting the large-scale promotion of electric vehicles. At present, new energy sources such as solar energy and wind energy have been combined with the electric energy of the distribution network through the AC / DC rectifier unit to form a multi-energy electric vehicle charging system, but how to coordinate and control the multi-energy during the charging process has not been studied. One method, how to adaptively and dynamically allocate the output power of multiple charging units according to the needs of the vehicle, and how to better coordinate regulation of ...
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IPC IPC(8): H02J7/00H02J7/35H02J7/02B60L53/00
CPCB60L53/00H02J7/0013H02J7/02H02J7/35H02J2207/40Y02T10/70Y02T10/7072Y02T10/72Y02T10/92Y02T90/14
Inventor 齐晓祥李彩生乔海强胡明珠张亚平牛高远张臻单栋梁刘向立李红岩韩鑫儒孟凡提杨昌富胡林凌凯王永辉何雨萌吴昊
Owner XJ POWER CO LTD