一、概述由自调频同步电动机构成的、由电流源逆变器供电的变速驱动系统所表现出的特性已引起人们的特别注意。目前,它是采用无整流子电动机、无耗损地进行转速调节的唯一电力驱动方式。电流在逆变器(逆变器供电给电动机)里的换流是在电动机在其转子内发出的电动势的作用下自然实现的。尽管低速工作时需要一些附加的元件,但是和自调频同步电动机相组合的静止逆变器却极其简单。从而可知,这种驱动方式无疑优于由电流源逆变器供电的异步电动机的驱动方式,虽然这后一种驱动方式本身较电压源逆变器的异步 I. Overview The characteristics exhibited by a self-tuning synchronous motor driven by a variable current drive system powered by a current source inverter have drawn particular attention. Currently, it is the only electric drive that uses a commutator-less motor for speed regulation without any loss. The commutation of the current in the inverter (inverter supplied to the motor) is naturally achieved by the electromotive force emanating from the motor in its rotor. In spite of the need for additional components for low-speed operation, the static inverter combined with a self-tuning synchronous motor is extremely simple. It can be seen that this type of drive is undoubtedly superior to that of an asynchronous motor powered by a current source inverter, although this latter type of drive itself is more asynchronous than the voltage source inverter