一种电动汽车充电系统单相整流有源滤波方法

提出了一种应用于电动汽车一体化充电系统中的单相PWM整流有源滤波的控制方法,以抑制充电中单相整流电路的直流电压二次纹波。在单相电网电压充电时,这种控制方法能通过控制电机驱动器电路,复用其中的两相同时进行单相整流和有源滤波,在实现整流器单位功率因数运行、稳定输出直流电压的同时,减小直流侧电压的二次纹波,减小网侧输入电流的总谐波畸变率。对单相整流直流侧电压二次纹波的产生机理、有源滤波电路的拓扑结构、单相整流和有源滤波的控制原理和方法进行了详细地分析。最后搭建输入电压峰值110 V,输出直流电压220 V,负载等效电阻100Ω的仿真模型,通过仿真和实验结果验证了所提控制方法的可行性。

A Novel Active Power Filter Method for Single-phase Rectifiers in Charging Systems for Electric Vehicles

A novel active power filter control method for DC-side secondary ripple voltage suppression in the integrated charging system of the electric vehicles(EVs)on single-phase pulse width modulation(PWM)active rectifiers was proposed.When a single-phase power grid was connected to charge the battery of EVs,the motor drive circuit with the proposed control method was used as a single-phase rectifier,and the two-phase drive circuits were multiplexed for single-phase rectification and active power filtering,and thus unit power factor and lower current total harmonic distortion(THD)in the grid side and minimized ripple voltage in the DC-side could be achieved.The generation mechanism of secondary ripple voltage in the DC side of the single-phase rectifier,the topology of active filter circuit,the control methods of single-phase rectification and active filtering were analyzed in detail.Finally,a simulation model with 110 V input voltage peak value,220 V output DC voltage and 100Ωequivalent load resistance was built.The feasibility of the proposed control method was verified by simulation and experiment results.