• CN：11-2187/TH
  • ISSN：0577-6686
机械工程学报

›› 2006, Vol. 42 ›› Issue (1): 126-129.

• 论文 • 上一篇    下一篇

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混沌SPWM原理及其谐波抑制特性分析

陆益民;张波;毛宗源   

  1. 广西大学电气工程学院;华南理工大学电力学院;华南理工大学自动化科学与工程学院
  • 发布日期:2006-01-15

GENERATION OF CHAOS-BASED SPWM AND ANALYSIS OF ITS SPECTRAL PROPERTY FOR SUPPRESSION OF HARMONICS

LU Yimin;ZHANG Bo;MAO Zongyuan   

  1. College of Electric Engineering, Guangxi University College of Electrical Power, South China University of Technology College of Automation Science and Engineering, South China University of Technology
  • Published:2006-01-15

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摘要： 常规正弦脉宽调制(Sinusoidal pulse width modulation，SPWM)的输出波形在载波频率及倍频周围含有较高谐波成分，基于混沌理论提出了一种新型脉宽调制(Pulse width modulation，PWM)原理——混沌正弦脉宽调制(Chaos-based sinusoidal pulse width modulation，CSPWM)，其三角载波信号的频率按一维混沌映射帐篷函数规律变化，从而改变谐波的频谱分布，使谐波连续均匀分布在较宽的频带范围内，抑制了由谐波引起的电磁噪声。将CSPWM应用于电压型逆变器，结果表明，其有很好的谐波抑制特性，且用单片机实现简单。

关键词: PWM, 混沌, 谐波

Abstract: There exists cluster harmonics around the multiples of carrier frequency in conventional sinusoidal pulse width modulation (SPWM) output waves. A new strategy for generation of Chaos-based SPWM (CSPWM) is proposed with the aim of reduction harmonic. A one-dimensional tent map is used to vary the frequencies of the triangular carrier wave so that the harmonics can be distributed continuously and equably over a wide frequency range. The new proposed CSPWM scheme is applied to a voltage source inverter. Research results show that it is effective on suppression of harmonics, moreover, it is easy to realize by microprocessor.

Key words: Chaos, Harmonic, PWM

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