改进型并联准谐振直流环逆变器及脉冲调制

An Improved Quasiparallel Resonant DC Link Inverter and Its Pulse Modulation

提出一种改进型并联准谐振直流环逆变器，把谐振电容分散在逆变器每个ＩＧＢＴ管子上，使每个管子都有局部吸收回路。对电路的各种工作模式、参数的选择以及空间电压矢量脉冲调制的应用方法作了详细的讨论。并通过仿真分析和实际运行对其软开关特性进行了验证。

In this paper,an improvement is made on the novel quasiparallel resonant DC link inverter.The individual inverter IGBT get its own local snub by shifting the resonant capacitors on its own.Its principle of operation and design methodology is discussed in detail.An optimal space voltage modulation is applied to the IQPRDCL inverter.The softswitching character is proved by the simulation and experiment.