In this paper a method of doubly fed induction motors using DTC is proposed. The theoretical analysis and control scheme are given.

本文对双馈感应电动机直接转矩控制进行了理论分析，推导出了有关控制方程并给出了具体的实施方案。

Wound-rotor induction motors that adjust speed by connecting resistors in series to rotor circuit have been easily found in the electrically controlled systems of shaft hoist.

绕线式异步电机采用转子回路串电阻调速广泛应用于我国工矿企业的提升机电控系统。

A new rotor faults diagnosis method for induction motors based on the double PQ transformation is presented.

提出了基于双PQ变换的感应电机转子故障诊断新方法。

In the past, the main disadvantage of asynchronous induction motors was the difficulty of varying their speed.

过去，异步感应电动机的主要缺陷是难于变速。

In the past the main problem with asynchronous induction motors was the difficulty of varying their speed.

在过去，非同步感应发动机的主要缺陷是很难改变转子的速度。

This paper provided a way of design and realization of an induction motors V/F control on SPMC75F2413A.

给出了一种基于SPMC75F2413A的感应电机开环V/F控制的一种实现方法。

The three phase squirrel cage induction motors are widely used in industry, because of its robustness, simplicity and cost-saving.

三相鼠笼式异步电动机因其结构简单、使用方便、成本较低等优点在工业生产中得到广泛的应用。

However, a variable speed drive based on induction motors is slowly introduced.

然而，一个基于感应电动机的变速传动装置在慢慢的被引进。

A new direct torque control (DTC) strategy of induction motors based on fuzzy space vector modulation (SVM) technology was proposed.

提出了一种基于模糊空间矢量调制(SVM)技术的异步电机直接转矩控制(DTC)方案。

The results of simulation show that the proposed control method has good dynamic performance and is an effective new way for the high performance speed control of induction motors is provided.

仿真结果表明该控制方法具有良好的动态性能，这为感应电动机的高性能速度控制提供了一条新的有效途径。

The precise computation of stray losses in induction motors is still a difficult problem.

异步电机杂散损耗的準确计算是一个十分困难的问题。

Then a voltage vector control scheme for induction motors based on constant stator flux is presented and it's nonlinear limitations are analyzed.

结合定子磁链控制，提出异步电机基于定子磁链幅值恒定的电压矢量控制方案，并对该方案的非线性局限进行了分析。

The simulation model of high voltage induction motors soft starting control is created by MATLAB. The soft starting control model of the current-limit start and the voltage-slope start are simulated.

利用MATLAB搭建了高压异步电动机软起动控制的仿真模型，对限流和电压斜坡软起动控制方式分别进行仿真。

When Power supply transformer and a continuous phase stator windings call for a phase, it may cause the three-phase induction motors running.

当供电电源一相断开以及定子绕组一相断开时，均将导致三相感应电动机的缺相运行。

A method which divides the slot of induction motors into layers is introduced.

介绍了异步电机槽的分层处理方法。

Traditional speed identification methods for sensorless vector control of induction motors are inaccurate due to external disturbances and model errors.

受外部干扰和模型误差影响，异步电机无速度传感器矢量控制中的转速辨识结果往往不準确。