电气传动2011，Vol.41Issue(7)：30-33,4.
SVPWM调制下逆变器输出电压谐波分析
Analysis of the Voltage Harmonics about the Inverter with the SVPWM
张雪原1
作者信息
- 1. 成都信息工程学院,控制工程系,四川,成都,610225
- 折叠
摘要
Abstract
The harmonics produced by the inverter have serious harm because it can lead to the pulsating torque and the hot additional heat. Studying the harmonics characteristic of the inverter can provide the recommend for the reducing the harmonics of the inverter. The analytical expression for the line voltage basing on the SVPWM modulation method was deduced. The effect to the harmonics was discussed when the step frequency,the modulation voltage and the output voltage period are changed. The influence to the THD is small by the step frequency, but when the step frequency rises the low frequency harmonics are reduced, and the high frequency harmonics rises. While the influence to the THD is large by the modulation voltage amplitude, when the modulation voltage changes tess, the harmonics contentchanges higher. When the modulation voltage is the 58％ of the largest line modulation voltage,the THD comes up to the 100％. And the modulation voltage is the 10 ％ of the largest line modulation voltage,the THD comes up to the 329 ％. But the influence to the harmonics is absence when the output voltage period changes.关键词
逆变器/SVPWM/谐波/交流电动机Key words
inverter / SVPWM/ harmonic / AC motor分类
信息技术与安全科学引用本文复制引用
张雪原..SVPWM调制下逆变器输出电压谐波分析[J].电气传动,2011,41(7):30-33,4.
