TY - GEN
T1 - A Five-Level Discontinuous SVPWM for Parallel Three-Level Inverters to Reduce Common Mode Voltage and Output Current Ripples
AU - Li, Weiwei
AU - Zhang, Xueguang
AU - Xu, Dianguo
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/8
Y1 - 2019/8
N2 - Conventional reduced common mode voltage (RCMV) discontinuous modulation (DPWM) method for three-level inverter can reduce the common mode voltage by selection of certain vectors which generates the smallest common mode voltage. However, it cannot provide additional performance enhancements when applied directly on parallel three-level inverters. Based on the interactions between the parallel inverters, this paper reveals that dual parallel three-level inverters could be analyzed and controlled as a single five-level inverter. A novel five-level discontinuous modulation method is therefore proposed to further reduce the common mode voltage of the system, in addition to improve the output current quality compared with synchronous parallel application of conventional discontinuous modulation. The effectiveness and advantages of the proposed method are verified by experimental results.
AB - Conventional reduced common mode voltage (RCMV) discontinuous modulation (DPWM) method for three-level inverter can reduce the common mode voltage by selection of certain vectors which generates the smallest common mode voltage. However, it cannot provide additional performance enhancements when applied directly on parallel three-level inverters. Based on the interactions between the parallel inverters, this paper reveals that dual parallel three-level inverters could be analyzed and controlled as a single five-level inverter. A novel five-level discontinuous modulation method is therefore proposed to further reduce the common mode voltage of the system, in addition to improve the output current quality compared with synchronous parallel application of conventional discontinuous modulation. The effectiveness and advantages of the proposed method are verified by experimental results.
KW - common mode voltage
KW - discontinuous space vector modulation
KW - five-level modulation
KW - harmonic distortion
KW - three-level inverter
UR - https://www.scopus.com/pages/publications/85077121150
U2 - 10.1109/ICEMS.2019.8921486
DO - 10.1109/ICEMS.2019.8921486
M3 - 会议稿件
AN - SCOPUS:85077121150
T3 - 2019 22nd International Conference on Electrical Machines and Systems, ICEMS 2019
BT - 2019 22nd International Conference on Electrical Machines and Systems, ICEMS 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 22nd International Conference on Electrical Machines and Systems, ICEMS 2019
Y2 - 11 August 2019 through 14 August 2019
ER -