A quantitative harmonics analysis approach for sinusoidal pulse-width-modulation based Z-source inverters

被引：6

作者：

Xu, Wenzheng ^{[1
,2
,3
]}

Chan, Chi Ho ^{[2
,3
]}

Chan, Ka Wing ^{[2
]}

Or, Siu Wing ^{[2
,3
]}

Ho, Siu Lau ^{[2
,3
]}

Liu, Ming ^{[2
]}

机构：

[1] Beijing Jiaotong Univ, Sch Elect Engn, Beijing, Peoples R China

[2] Hong Kong Polytech Univ, Dept Elect Engn, Hung Hom, Kowloon, CF627,11 Yuk Choi Rd, Hong Kong, Peoples R China

[3] Natl Rail Transit Electrificat & Automat Engn Tec, Hong Kong Branch, Hong Kong, Peoples R China

来源：

IET POWER ELECTRONICS | 2022年 / 15卷 / 09期

关键词：

PWM WAVE-FORMS; THEORETICAL-ANALYSIS; COMPENSATION; MITIGATION; DISTORTION; IMPEDANCE; 2-LEVEL; DC;

D O I：

10.1049/pel2.12270

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 shoot-through (ST) states are essential for the operation of sinusoidal pulse-width-modulation (SPWM) based Z-source inverters. However, the insertion of shoot-through state unavoidably leads to output harmonics which is greatly affected by its distribution, especially for bipolar modulation schemes. With quantitative analysis, this paper investigates the mathematical relationship between the output harmonics and shoot-through states for single-phase Z-source inverters. A modified double-Fourier-transformation-based calculation scheme is proposed to estimate the output harmonics with different shoot-through states insertion methods. Simulations and hardware experiments with a 200 W single-phase Z-source converter under two bipolar modulation control methods verified the accuracy of the proposed theory. The quantitative analysis would be helpful for the design of Z-source converter's control strategy and modulation scheme.

引用

页码：815 / 824

页数：10

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