The invention relates to a charger, a charger control method and a vehicle. The charger comprises a controller, an AC side capacitor module, a power factor correction circuit, a bus capacitor module and a DC-DC converter. The bus capacitor module comprises a first capacitor and a second capacitor; the AC side capacitor module is connected with the first capacitor and the second capacitor. The controller is used for dynamically adjusting the conduction duty ratio of a high-frequency bridge arm of the power factor correction circuit according to the voltage of the alternating current when the charger is in a single-phase alternating current charging mode so as to discharge the voltage of the alternating current side capacitor module and carry out power factor correction on the alternating current. And the direct current output by the power factor correction circuit is input to the DC-DC converter. Thus, by dynamically adjusting the conduction duty ratio of the high-frequency bridge arm of the power factor correction circuit, the voltage of the alternating current side capacitor module can be discharged, current distortion generated when alternating current crosses a zero point is avoided, and meanwhile the power factor correction function can be guaranteed.
本公开涉及一种充电机、充电机控制方法及车辆。充电机包括控制器、交流侧电容模块、功率因数校正电路、母线电容模块及DC‑DC转换器;母线电容模块包括第一电容和第二电容;交流侧电容模块与第一电容、第二电容分别连接;控制器用于在充电机处于单相交流电充电模式时,根据交流电的电压,动态调整功率因数校正电路的高频桥臂的导通占空比,以泄放交流侧电容模块的电压并对交流电进行功率因数校正,并将功率因数校正电路输出的直流电输入至DC‑DC转换器。这样,通过动态调整功率因数校正电路的高频桥臂的导通占空比,可对交流侧电容模块的电压进行泄放,避免交流电过零点时产生电流畸变,同时能保证功率因数校正功能。
Charger, charger control method and vehicle
充电机、充电机控制方法及车辆
2024-03-08
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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