The invention discloses a control circuit of a vehicle-mounted charger of a totem pole. The control circuit comprises a totem pole power circuit and a PWM control circuit. The PWM control circuit comprises a pulse width modulation unit, a control unit and a delay output unit. The pulse width modulation unit is connected with the output end of the totem pole power circuit and is used for outputting a control signal according to the voltage and current output by the totem pole power circuit. The control unit is connected with the pulse width modulation unit and is used for outputting a PWM signal according to the control signal. The delay output unit is connected with the control unit and is used for delaying the PWM signal and then outputting the PWM signal. The control end of the totem pole power circuit is connected with the delay output unit and is used for controlling the working state of the totem pole power circuit according to the delayed PWM signal. According to the control circuit of the invention, the PWM signal is delayed through the delay output unit, the dead time of the totem pole power circuit can be reduced, and the overall efficiency and the power factor of the vehicle-mounted charger of the totem pole are improved.
本发明公开了一种图腾柱的车载充电机的控制电路。该控制电路包括图腾柱功率电路和PWM控制电路。PWM控制电路包括脉冲宽度调制单元、控制单元和延时输出单元。脉冲宽度调制单元与图腾柱功率电路的输出端连接,用于根据图腾柱功率电路输出的电压和电流输出控制信号;控制单元与脉冲宽度调制单元连接,用于根据控制信号输出PWM信号;延时输出单元与控制单元连接,用于对PWM信号延时后输出;图腾柱功率电路的控制端与延时输出单元连接,用于根据延时后的PWM信号控制图腾柱功率电路的工作状态。本发明实施例通过延时输出单元对PWM信号进行延时,可以减小图腾柱功率电路的死区时间,提高图腾柱的车载充电机的整机效率和功率因数。
Control circuit of vehicle-mounted charger of totem pole
一种图腾柱的车载充电机的控制电路
2021-11-19
Patent
Electronic Resource
Chinese
IPC: | 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 / 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 |
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