根据“等效功率损耗法”推导出实用的电动机负载率计算公式。
According to the equivalent efficiency loss method, the practical formula for motor load rate is derived.
利用等效电路，分析了三相异步电动机在不对称电压下的性能和对电机的危害。
By applying equivalent circuits, this paper has analyzed three-phase asynchronous motor property and the harm to generator under asymmetrical voltage.
本文尝试用感应电动机的T型等效电路和能量比法，分析三相感应电机的工作特性。
The author tries to analyze the operational characteristics of three phase induction motor using the T-type equivalent circuit of induction motor and the energy ratio method.
考虑三相异步电动机起动过程挤流效应对参数的影响，建立了变参数的等效电路。
Considering the effect of the skin-effect during the starting of three-phase asynchronous motor on the parameter, the author sets up an equivalent circuit of variable parameter.
在感应电动机等效电路的基础上，分析了当电源频率发生改变时，等值电路中主要参数的变化规律。
The principle of main parameter of the with the change of source frequency were given on the base of analyzing the equivalent circuit of induction motor.
从异步电动机的稳态等效电路出发，推导出了功率因数与转差角频率之间的关系。
Based on equivalent circuit of asynchronous motor in stable state, the relationship between power factor and slip Angle frequency was deduced.
考虑电动机转速的波动，建立了系统的等效驱动力学模型。
Taking account of motor rotating speed fluctuations, a system equivalent mechanical model is established.
同时根据对称分量法的基本原理，提出以等效电流作为电动机热积累计算的依据的算法。
And, the equivalent current algorithm for the electric motor heat accumulation is proposed based on the symmetrical component method.
介绍了一种运用计算机对三相感应电动机等效电路参数进行高精度计算的方法。
A high precision computing method of equivalent circuit parameter of 3-phase induction motor is discussed in this paper.
若将他励直流电动机输出功率的机理等效为一个与电动机电枢绕组并联的可变电阻，可以得到他励直流电动机可变电阻型等效电路图。
The output power mechanism of a separately excited DC motor can be equivalent to a variable resistance, which is parallel with the armature winding of the motor.
本文讨论了双电压单相电容起动异步电动机的设计特点，着重分析了该电机起动时的等效电路。
The paper points out the characteristics of the design and calculation of double voltage single-phase induction moter with capacitance starting, and analyses the circuit model of the machine.
介绍了一种利用电动机正、负序等效电流实现电动机热过载保护的方法，给出了保护动作的数学模型、离散算法及其计算机实现方法。
A thermal overload inverse time equation that is quite close to the real thermal locus of motor and its implementation method are proposed based on the thermal characteristic of motor.
介绍了一种利用电动机正、负序等效电流实现电动机热过载保护的方法，给出了保护动作的数学模型、离散算法及其计算机实现方法。
A thermal overload inverse time equation that is quite close to the real thermal locus of motor and its implementation method are proposed based on the thermal characteristic of motor.
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