SELECTIVE HARMONIC ELIMINATION PWM STRATEGY FOR THREE-LEVEL NPC INVERTERS UNDER FAULT-TOLERANT OPERATION

被引：2

作者：

Dai, Bijun ^{[1
]}

Zhang, Ming ^{[2
]}

Guo, Yuanbo ^{[1
]}

Zhang, Xiaohua ^{[1
,2
]}

机构：

[1] Dalian Univ Technol, Sch Elect Engn, 2 Linggong Rd, Dalian 116024, Peoples R China

[2] Harbin Inst Technol, Sch Elect Engn & Automat, 92 West Dazhi St, Harbin 150001, Heilongjiang, Peoples R China

来源：

INTERNATIONAL JOURNAL OF INNOVATIVE COMPUTING INFORMATION AND CONTROL | 2019年 / 15卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Three-level neutral-point-clamped inverter; Fault-tolerant operation; Synchronous modulation; Selective harmonic elimination pulse-width modulation;

D O I：

10.24507/ijicic.15.05.1793

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

To improve the reliability in high voltage and high power applications, the fault-tolerant control of three-level neutral-point-clamped (3L-NPC) inverter has been deeply studied. In this paper, the eight-switch three-phase inverter (ESTPI) is selected as the fault-tolerant topology of 3L-NPC inverter, and the synchronous modulation strategy of ESTPI is discussed for some particular application situation working at low switching frequency. The harmonic distribution of the ESTPI is analyzed firstly under synchronous modulation. To eliminate the specific low-order harmonics including the frequency tripling harmonics, the selective harmonic elimination pulse-width modulation (SHEP WM) based synchronous modulation strategy for the ESTPI is proposed in this paper, which can ensure a good performance of output voltage for 3L-NPC inverter under fault-tolerant operation. The effectiveness and feasibility of the proposed method are verified by the experimental results.

引用

页码：1793 / 1805

页数：13

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