Xiaoyong ZHANG, Qing ZHANG, Fengwu ZHOU, et al. Main Circuit Design of Vehicle-borne Converter Based on Three-level Chopper Technology[J]. Electric Drive for Locomotives, 2019,(5):63-67.
Xiaoyong ZHANG, Qing ZHANG, Fengwu ZHOU, et al. Main Circuit Design of Vehicle-borne Converter Based on Three-level Chopper Technology[J]. Electric Drive for Locomotives, 2019,(5):63-67. DOI: 10.13890/j.issn.1000-128x.2019.05.103.
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.