基于多级离散变频的高转矩软启动技术  

High torque soft start technology based on multilevel discrete variable frequency

作　　者：佘致廷[1] 郑勇[1] 张前海 张红梅[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南长沙410082 [2]长沙毅超自控技术有限公司,湖南长沙410082

出　　处：《电源技术》2012年第9期1374-1376,共3页Chinese Journal of Power Sources

摘　　要：交流电机直接起动会产生很大的冲击电流,影响电机的使用寿命以及给电网带来不良影响。采用降压起动装置或常规软起动器起动又很难提供足够大的起动转矩,无法实现重载起动。针对这些问题,研究了一种基于多级离散变频的高转矩软启动技术。仿真结果表明了所研究的软启动技术具有起动转矩大及起动电流小的显著优点,在重载电动机的起动方面具有一定的创新性和较好的应用前景。Starting directly the AC motor will produce a big dash current, which will shorten the service life of the electromotor and has a negative effect on power grid. Reducing voltage start and traditional soft starter can not provide big enough starting torque and can not carry heavy load to start. In order to overcome these problems, a high torque soft start technology based on multilevel discrete variable frequency, was researched.The simulation results show that this soft start technology has some advantage such as high starting torque and low starting current and possess some ingenuity on settling over-loading start.

关 键 词：交流电机 离散变频 高转矩 软启动 

分 类 号：TM3[电气工程—电机]