The invention provides an adjustable high-power DC/DC converter for a hybrid electric vehicle, and the adjustable high-power DC/DC converter comprises a control system, a combined DC/DC conversion system and an output circuit, and the combined DC/DC conversion system comprises four DC/DC conversion subsystems connected in parallel, and each DC/DC conversion subsystem comprises a DC/DC conversion module; the control system comprises a main controller and four PWM wave control modules coordinately controlled by the main controller, and each PWM wave control module controls the corresponding DC/DC conversion module; and the output circuit outputs the outputs of the four DC/DC conversion subsystems after connecting the outputs in parallel. A main control module acquires driver operation and automobile operation condition information by acquiring pedal acceleration in real time and determines required target power; and at least one combined DC/DC conversion subsystem is controlled to operate according to the target power. The adjustable high-power DC/DC converter is high in output power, stable in voltage and small in voltage ripple.
本发明提供一种用于混合动力汽车的可调式大功率DC/DC变换器,包括:控制系统、组合DC/DC变换系统和输出电路,组合DC/DC变换系统包括并联的4个DC/DC变换子系统,每个DC/DC变换子系统均包括DC/DC变换模块;控制系统包括主控制器及其协调控制的4个PWM波控制模块,每个PWM波控制模块分别控制对应的DC/DC变换模块;输出电路将4个DC/DC变换子系统的输出并联后输出。主控制模块通过实时采集板踏板加速度获取驾驶员操作和汽车运行工况信息,确定所需的目标功率;根据所述目标功率,控制至少1个组合DC/DC变换子系统运行。本发明的可调式大功率DC/DC变换器输出功率大、电压稳定和电压纹波小。
Adjustable high-power DC/DC converter for hybrid electric vehicle
一种用于混合动力汽车的可调式大功率DC/DC变换器
2021-04-09
Patent
Elektronische Ressource
Chinesisch
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 |
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