Performance development of the three-phase soft switching power conversion system for electric vehicle

设计了三相PWM逆变器和三相PWM整流器，使其在16 kHz以上的高频开关正弦波脉冲调制方案上工作。高频开关正弦波脉冲调制与控制的实现强烈要求三相PWM功率变换器电路和系统在波形质量、快速响应和小型化方面的性能提高。一般情况下，在三相硬开关正弦波PWM逆变器和整流器中，功率半导体器件和功率模块的开关功率损耗以及高dv/dt和di/dt产生的开关电压和电流浪涌相关电磁噪声有增加的趋势。因此,软开关正弦波PWM功率转换电路和系统技术在零电压开关转换和零电流开关转换的软换相条件下是必不可少的，更具体地实现了高效率的功率转换处理和降低开关噪声，即使在高频开关正弦波PWM策略中，由于降低了电源中的dv/dt和di/dt电应力和开关功率损耗本文对采用三个辅助谐振整流缓冲器的三相电压源型软开关PWM逆变器进行了仿真和实验评价和讨论，该逆变器可以实现零电流零电压混合开关的通断，是一种理想的软开关。介绍了ZCS & ZVS型辅助谐振整流缓冲电路的工作原理，并对其进行了评价。此外，还从仿真的角度确定了其最佳电路参数。最后，在3kW实验装置的基础上，对谐振缓冲器辅助三相电压源型软开关正弦波PWM逆变器的工作性能进行了评价和讨论。少

The three-phase PWM inverters and three phase PWM rectifier have been designed so as to operate on the basis of the high frequency switching sinewave pulse modulation scheme more than 16 kHz or more. The performance enhancement relating waveform quality and quick response and downsizing realization of three- phase PWM power converter circuits and systems mentioned above are strongly required for high- frequency switching sinewave pulse modulation and control implementation. In general, the switching power losses of the power semiconductor devices and power modules, and switching voltage and current surge related electromagnetic noise generated by a high dv/dt and di/dt tend to increase in those of three-phase hard switching sinewave PWM inverters and rectifiers.Thus, soft switching sinewave PWM power conversion circuit and system techniques operating under soft commutation conditions of zero voltage switching transition and zero current switching transition are more indispensable for t … More he concrete realization of the high efficiency in power conversion processing and reduced switching noises even in high frequency switching sinewave PWM strategy because of reduced dv/dt and di/dt electrical stresses and switching power losses in power semiconductor devices..This paper presents the simulation and experimental evaluations and discussions of the three-phase voltage source type soft switching PWM inverter using the three auxiliary resonant commutation snubbers, which can be turned on and turned off with zero current and zero voltage hybrid switching as the perfect soft switching. The operating principle of this ZCS & ZVS type auxiliary resonant commutation snubber circuit is described and evaluated herein. In addition to this, its optimum circuit parameters are determined from a simulation point of view. Finally, the operating performances of this resonant snubber assisted three-phase voltage source type soft switching sinewave PWM inverter are evaluated and discussed on the basis of the 3kW experimental setup. Less