A Novel Hybrid Five-Level Voltage-Source Converter Based on T-Type Topology for High-Efficiency Applications

作者：Xu, Shuai; Zhang, Jianzhong^*; Hu, Xing; Jiang, Yongjiang

来源：IEEE Transactions on Industry Applications, 2017, 53(5): 4730-4743.

DOI：10.1109/TIA.2017.2713762

• Hybrid multilevel converter (HMC)
• phase-disposition pulse-width modulation (PD-PWM)
• redundant switching state
• T-type converter
• voltage-balancing control

A novel hybrid five-level voltage-source converter for high-efficiency applications is investigated in this paper. Compared with traditional multilevel converters, this hybrid multilevel converter generates desired staircase voltage levels with a reduced number of power devices and isolated drivers at higher voltage levels. It has redundant switching state combinations in hybrid multilevel converter, which makes it easy to balance flying capacitor voltages and realize fault-tolerant operation. A voltage-balancing control strategy based on switching state redundancies is presented for the hybrid multilevel converter to generate desired levels and also keep voltage balance of flying capacitors at the same time. The performance of the hybrid multilevel converter under various operating conditions is investigated inMATLAB/Simulink. The effectiveness of the proposed hybrid multilevel converter is validated by experiment results.

• 出版日期2017-10
• 单位东南大学