Harmonic Quantitative Analysis for Dead-Time Effects in SPWM Inverters

被引：22

作者：

Jiao, Ning ^{[1
]}

Wang, Shunliang ^{[1
]}

Liu, Tianqi ^{[1
]}

Wang, Yanbo ^{[2
]}

Chen, Zhe ^{[2
]}

机构：

[1] Sichuan Univ, Coll Elect Engn & Informat Technol, Chengdu 610065, Sichuan, Peoples R China

[2] Aalborg Univ, Dept Energy Technol, DK-9220 Aalborg, Denmark

来源：

IEEE ACCESS | 2019年 / 7卷

基金：

中国国家自然科学基金;

关键词：

Harmonics; dead-time; double Fourier series; single Fourier series; SPWM; PWM WAVE-FORMS; DOMAIN CHARACTERIZATION; THEORETICAL-ANALYSIS; VOLTAGE; DC;

D O I：

10.1109/ACCESS.2019.2907176

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Dead-time is commonly designed to avoid shoot-through phenomenon within each arm in voltage source converter. The presence of dead-time tends to cause a power quality issue. Quantitative analysis for dead-time effects is important to mitigate power quality issue. This paper presents two harmonic quantitative analysis methods for dead-time effects in SPWM inverters. First, the harmonic analysis method based on double Fourier series is modified to adapt any initial phase angle and calculate additional harmonics from dead-time effects. Then, a calculation method for switching angles in sinusoidal pulse width modulation (SPWM) is presented. Based on the obtained switching angles and single Fourier series, a more concise calculation method is proposed to perform quantitative analysis for the impact of dead-time on harmonics. The harmonic model is able to reveal the mechanism of harmonics generation from dead-time. Finally, the inner relationship and essential difference between double- and single-Fourier series are summarized. The simulation and experimental results show that both of the proposed quantitative analysis methods can accurately evaluate the effect of dead-time on harmonics.

引用

页码：43143 / 43152

页数：10

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