机构地区: 中国石油大学华东信息与控制工程学院
出 处: 《大功率变流技术》 2010年第3期12-15,共4页
摘 要: 针对普通抽油机变频器在整流环节采用不控整流方式而无法回馈"倒发电"电能这一问题,提出了一种对网侧电流进行解耦后实施无差拍控制的方法,并通过SVPWM方法进行调制,在此基础上构建了闭环控制的三相PWM可逆整流器。实验及应用结果证实了该方法的正确性和实用性。 Applying the uncontrolled.rectifier method in the rectifying process, conventional pumping unit converter can't feed back power by motor generating electricity. In order to solve this issue, a deadbeat control method is carried out after decoupling the grid-side current, and then modulation is made with SVPWM method. A three-phase PWM reversible rectifier with closed-loop control is built based on the control method. Experimental and practical results show its validity and practicability.
领 域: [电气工程]