电动汽车双向DC/DC变换器的设计

采用全桥谐振C LCLC变换器和模糊PID控制的半桥Buck Boost变换器，组成两级式双向DC/DC变换器拓扑；并根据等效模型计算出谐振元件参数，即变压器的匝比为1∶1，输入输出电压为400 V，谐振电感为100 μH，谐振电容为253 μF，半桥Buck Boost变换器中的滤波电感为5 000 μH，滤波电容为127 μF。仿真结果表明，全桥谐振C LCLC谐振变换器输入电压与输出电压一致；模糊PID控制策略可有效降低充电状态下电压超调量，缩短调节时间，提高系统的抗扰动能力，说明所采用的设计工艺能有效提高电动汽车变换器的动态、稳态性能和抗扰动能力。

Design of a Bidirectional DC/DC Converter

two stage bidirectional DC/DC converter topology is formed using a full bridge resonant C LCLC converter and a half bridge Buck Boost converter with fuzzy PID control,and resonant element parameters calculated based on the equivalent model,of which the transformers turn ratio was 1∶1,the input and output voltage was 400 V,the resonance inductance was 100 μH,the resonance capacitance was 253 μF,the filter inductance in the half bridge Buck Boost converter was 5 000 μH,and the filter capacitance was 127 μF Simulation results show that the input voltage and output voltage of the full bridge resonant C LCLC converter are consistent the fuzzy PID control strategy can effectively reduce the voltage overshoot in the charging state,shorten the adjustment time,and improve the anti disturbance capability of the system The electric vehicle converter can therefore effectively improve the dynamic and steady state performance and anti disturbance ability of the electric vehicle converter