【摘要】 翰油系统使用的电机往往功率很大,这些电机采用传统的起动方法,起动时,会对电网产生很大的冲击。但是如果采用软起动器就可以避免这种现象的产生。对此,介绍了软起动器这种新型的电力电子器件,分析了它的工作原理,着重介绍了利用软起动器的旁路功能实现的软切换技术及其在多泵系统中的应用。更多还原

【Abstract】 The power is uasually very large in AC induction motor used in oil supply system. A large starting current will be produced when AC motor is atarted by traditional method such as Y-Astarter. However, it can be avoided if it is started by smart motor controller (SMC), This new type of electric and electronic equipment and the working principle of the smart motor controller are introduced in this paper with emphasis on the closed transition switching technology and its application in oil supply system with many pumps.更多还原