独立输入并联输出模块化DAB变换器功率均衡优化控制

Power Equalization Optimization Control of Input Independent Output Parallel Modular DAB Converter

针对独立输入并联输出IIOP(input independent output parallel)模块化双有源桥DAB(dual active bridge)变换器,当各模块的参数不匹配或输入电压不相等时的功率均衡问题,基于双重移相DPS(dual phase shift)控制,提出了一种功率补偿均衡控制PCEC(power compensation equalization control)算法以提高变换器的动态性能及其效率,并实现模块化DAB变换器的传输功率均衡。此外,考虑到大传输功率情况下,为实现各模块的充分运用,补充提出了一种功率补偿协同控制PCCC(power compensation cooperative control)算法。最后,基于DSP28335的半实物仿真平台对所提出的功率均衡方案进行对比实验验证。

Aimed at the power equalization problem of input independent output parallel(IIOP)modular dual active bridge(DAB)converters when the parameters of modules do not match or the input voltages are not equal,a power compensation equalization control(PCEC)algorithm based on dual phase shift(DPS)control is proposed to improve the dynamic performance and efficiency of the converter and achieve the transmission power equalization of the modular DAB converter.In addition,considering the large transmission power,a power compensation cooperative control(PCCC)algorithm is additionally proposed to realize the full use of each module.Finally,based on the DSP28335 hardware-in-the-loop simulation platform,the proposed power equalization scheme was compared and verified experimentally.