从三个基本特征着手讲授PWM整流电路
|
摘要
PWM整流电路是采用PWM控制方式和全控型器件组成的整流电路,可实现网侧高功率因数,其内容一直是"电力电子技术"教材中的教学难点。本文从PWM整流电路三个基本特征着手,在讲解其工作原理时由浅入深,引导学生逐步理解PWM整流电路的能量双向流动、功率因数可控和直流侧电压控制工作原理,并对PWM整流电路为升压型整流电路的原因进行了分析,取得了良好的教学效果。
PWM rectifier is made of full-controlled device, working as PWM mode, which can achieve high power factor on the grid side, but its content has always been the teaching difficulty of "Power Electric Technology". This paper begins with the three basic features of the PWM rectifier circuit, explaining its working principle from?the?elementary?to?the?profound, leading students to understand the principle of energy bidirectional flow, power factor controllable and DC side voltage control of PWM rectifier, and analyzing the reasons of the PWM rectifier circuit as the boost rectifier circuit, so good teaching results have been achieved.
PWM rectifier is made of full-controlled device, working as PWM mode, which can achieve high power factor on the grid side, but its content has always been the teaching difficulty of "Power Electric Technology". This paper begins with the three basic features of the PWM rectifier circuit, explaining its working principle from?the?elementary?to?the?profound, leading students to understand the principle of energy bidirectional flow, power factor controllable and DC side voltage control of PWM rectifier, and analyzing the reasons of the PWM rectifier circuit as the boost rectifier circuit, so good teaching results have been achieved.
引文
[1]王兆安,黄俊.电力电子技术(第4版)[M].北京:机械工业出版社,2004.
[2]张兴,杜少武,黄海宏.电力电子技术[M].北京:科学出版社,2010.
[3]黄海宏,王海欣,张毅等. PWM整流电路的原理分析[J].南京:电气电子教学学报,2007,29(4):28-30,33.
[2]张兴,杜少武,黄海宏.电力电子技术[M].北京:科学出版社,2010.
[3]黄海宏,王海欣,张毅等. PWM整流电路的原理分析[J].南京:电气电子教学学报,2007,29(4):28-30,33.