Carrier Based PWM Control of 3-Level NPC Inverter with DC Neutral Point Balancing and Common Mode Voltage Reduction

被引：2

作者：

Nho-Van Nguyen ^{[1
]}

Mon-Van Doi ^{[1
]}

机构：

[1] Vietnam Natl Univ HoChiMinh City VNU HCM, Ho Chi Minh City, Vietnam

来源：

2019 10TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND ECCE ASIA (ICPE 2019 - ECCE ASIA) | 2019年

关键词：

Neutral point clamped three-level inverter; Double modulation wave; NP voltage balance; reduced common mode voltage; SPACE-VECTOR PWM; OVERMODULATION REGION; CLAMPED INVERTER; MODULATION; STRATEGY; SCHEME;

D O I：

10.23919/icpe2019-ecceasia42246.2019.8797229

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：

The paper presents a new Carrier based PWM method for 3-level NPC inverter to simultaneously mitigate neutral point (NP) voltage variation and to reduce common mode voltage (CMV). The proposed PWM method can be performed with double modulation waves. An offset modification helps to determine RCMV PWM patterns with zero NP current. Then, hybrid reduced CMV PWM patterns have been designed to minimize number of extra switching and to bring down line voltage stress dv/dt to a half value. Finally, various current based RCMV-PWM methods have been proposed to suppress NP voltage oscillation. The theoretical analysis will be verified by simulation and experimental results.

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页数：8

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