基于三电平斩波技术的车载变流器主电路设计

Main Circuit Design of Vehicle-borne Converter Based on Three-level Chopper Technology

详细分析了三电平Buck变换器的工作原理及不同时段的等效电路,推导出滤波电感、输入电容和输出电容的理论计算公式,采用Saber软件对电路原理进行了仿真,通过设计1台工程样机进行试验测试,验证了理论分析及计算的正确性。

The working principle of three-level Buck converter and its equivalent circuit in different time periods were analyzed in detail. The theoretical calculation formulas of filter inductance, input capacitance and output capacitance were derived. The circuit principle was simulated by Saber software. The correctness of theoretical analysis and calculation was verified by designing an engineering prototype for test.