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汉语拼音：tóng bù diàn dòng jī

转子转速与定子旋转磁场的转速相同的交流电动机。其转子转速n与磁极对数p、电源频率f之间满足n=f/p。转速n决定于电源频率f，故电源频率一定时，转速不变，且与负载无关。具有运行稳定性高和过载能力大等特点。常用于多机同步传动系统、精密调速稳速系统和大型设备(如轧钢机)等。

• So far, Permanent magnet linear synchronous motor as a primary drive source is one of the best subjects in this field.

  从现有情况看，在这一系统中采用永磁直线同步电动机作为主要动力源是最好的方案之一。

• This thesis proposes the implementation of a permanent-magnet synchronous motor drive system for elevator applications.

  本文旨在研制电梯用之永磁同步电动机驱动系统。

• First, the configuration, characteristics and mathematical model of the permanent magnet synchronous motor are discussed.

  文中，首先介绍表面黏著式永磁同步电动机的结构与特性、数学模式、驱动方法。

• Most synchronous motors used in industry are very large horsepower and relatively low speed.

  在工业中使用的大多数同步电动机非常大马力和相对较低的速度。

• The AC supply to the test motor is provided by an AC generator, which is driven by an inverter-fed, synchronous motor.

  交流供应测试电动机提供了一个交流发电机，驱动由变频，同步电动机。

• And how to estimate accurately the position of a rotor in a dynamic situation to realize the sinusoidal current drive was analyzed.

  详细分析了电机在动态运况下，如何准确估计转子的位置，实现永磁同步电动机正弦波驱动。

• The reactance parameters of permanent magnet synchronous motors are the most essential to the analysis and design of motor.

  永磁同步电动机电抗参数是电机性能分析和优化设计的重要依据。

• Transverse flux permanent propulsive magnetic (TFPPM) motor has low speed, high torque density and is widely researched as propulsive motor.

  由于横向磁场永磁同步电动机具有低转速、高转矩密度的特点，在推进电机领域被广泛研究。

• Under the theoretical research of direct torque control system on electrically excited synchronous motor, simulations have been done.

  在电励磁同步电动机直接转矩控制系统理论研究的基础上，对控制系统进行了仿真。