Analysis of power and power spectral density in PWM inverters with randomized switching frequency

被引：84

作者：

Kirlin, RL ^{[1
]}

Bech, MM

Trzynadlowski, AM

机构：

[1] Univ Victoria, Dept Elect & Comp Engn, Victoria, BC V8W 3P6, Canada

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

[3] Univ Nevada, Dept Elect Engn, Reno, NV 89557 USA

来源：

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2002年 / 49卷 / 02期

关键词：

inverters; random pulsewidth modulation; spectral analysis;

D O I：

10.1109/41.993282

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A novel method for accurate calculation of power spectra of the pulsewidth modulation (PWM) voltage-source inverter with randomized switching frequency is presented. The case of a limited pool of switching frequencies, convenient and adequate for technical purposes, is considered, and a mathematical background for this type of random PWM (RPWM) is provided. It is shown that the limited-pool RPWM gives rise to not only a continuous spectrum, but, also, under certain circumstances, pure power spectral components (harmonics), typical for the deterministic PWM. Criteria for the existence of harmonics are given, and formulas for both the power and the power spectral density are derived and verified experimentally.

引用

页码：486 / 499

页数：14

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