The invention discloses an electric-drive reconfiguration type charging system for an electric vehicle considering secondary power pulse suppression. The system comprises an uncontrolled rectifier bridge, a three-phase inverter, a three-phase permanent magnet synchronous motor, an energy storage capacitor, an output filter capacitor, a power battery and a change-over switch. In a charging state, two-phase winding of the permanent magnet synchronous motor and the two groups of half bridges of the inverter form a parallel Boost circuit, and the residual one-phase winding of the permanent magnet synchronous motor and the residual one group of half bridges of the inverter form an active filter. According to the system, original three-phase inverters, three-phase permanent magnet synchronous motor windings, control and sensor units and the like of the electric automobile are fully utilized, and the functions of grid-side power factor correction and direct-current-side secondary power pulsation suppression can be completed only by adding a capacitor and three change-over switches on the basis of an original electric drive system. The power density of the charging system is improved, and the cost of the system is effectively reduced.
本发明公开了一种计及二次功率脉动抑制的电动汽车用电驱重构型充电系统,包括不控整流桥,三相逆变器,三相永磁同步电机,储能电容,输出滤波电容,动力电池和切换开关。在充电状态,永磁同步电机的两相绕组与逆变器的两组半桥构成并联Boost电路,永磁同步电机剩余的一相绕组与逆变器剩余的一组半桥构成一个有源滤波器。该系统充分利用电动汽车原有的三相逆变器、三相永磁同步电机绕组、控制及传感器单元等,在原有电驱系统的基础上只需要增加一个电容与三个切换开关,即可完成网侧功率因数校正和直流侧二次功率脉动抑制的功能,在提高充电系统功率密度的同时,有效降低了系统的成本。
Electri-drive reconfiguration type charging system for electric vehicle considering secondary power pulsation suppression
计及二次功率脉动抑制的电动汽车用电驱重构型充电系统
2021-09-17
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
European Patent Office | 2024
|European Patent Office | 2024
|Electric Vehicle Fire Suppression System in Electric Vehicle Charging Station
European Patent Office | 2024
|Charging Station Fire Suppression System for Electric Vehicle Fire Suppression
European Patent Office | 2025