无刷直流电动机是以电子换相代替机械换相的直流电动机，它保持了直流电动机的优良特性，具有较好的起动和调速性能，而且它无需机械换相器，使电机的结构简单，可以从根本上克服一般有刷直流电动机易于产生换相火花的弊病-Brushless DC motor with an electronic substitute for mechanical phase of the DC motor, it has maintained the excellent characteristics of DC motor, has a good start and speed control performance, and it need not-for-mechanical phase, so that the motor structure is simple and can overcome the fundamental general have brush DC motor with easy to produce sparks for the ills