期刊论文

She, Z.-T.(shezhiting@yahoo.com.cn)

中文

湖南大学学报(自然科学版)

1674-2974

2004

31

6

46-50

10.3321/j.issn:1000-2472.2004.06.011

本校为其他机构

研究了三相感应电动机分级变频软起动的控制方法,并采用三相电路对称分量法对各种组合的三相电源系统进行优选,进而提出了电机分级变频起动产生最大转矩的三相电源最优组合方式.在理论分析与仿真的基础上,完成了以16位单片机80C196KC为微处理器的分级变频高转矩软起动器的实验研究.实践表明,基于分级变频理论的软起动器能使电机以高转矩和较小起动电流平滑起动,且控制简单.负载试验结果与仿真结果基本吻合,证明了这种分级变频高转矩软起动理论的正确性和有效性.

The control method of discrete frequency softstarter for three-phase induction motor is studied. The optimal combination pattern of the three-phase current supply system that can make motor start with a high torque and a small current is selected from all kinds of combination three-phase supply systems in the three-phase circuit symmetrical component method. Based on theoretical analyses and simulation techniques, we have completed the experiment of the high torque softstarter with 80C196KC as micro-computer. The experiment proves that the softstarter based on discrete frequency theory can sta...