Multilevel PWM methods at low modulation indices

被引：146

作者：

Tolbert, LM ^{[1
]}

Peng, FZ

Habetler, TG

机构：

[1] Univ Tennessee, Dept Elect & Comp Engn, Knoxville, TN 37996 USA

[2] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[3] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2000年 / 15卷 / 04期

关键词：

cascade inverter; diode-clamped inverter; low modulation index; multilevel inverter; multilevel PWM;

D O I：

10.1109/63.849042

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

When utilized at low amplitude modulation indices, existing multilevel carrier-based PWM strategies have no special provisions for this operating region, and several levels of the inverter go unused. This paper proposes some novel multilevel PWM strategies to take advantage of the multiple levels in both a diode-clamped inverter and a cascaded II-bridges inverter by utilizing all of the levels in the inverter even at low modulation indices. Simulation results show what effects the different strategies have on the active device utilization. A prototype 6-level diode-clamped inverter and an 11-level cascaded H-bridges inverter have been built and controlled with the novel PWM strategies proposed in this paper.

引用

页码：719 / 725

页数：7