绕线式异步电动机转子串电阻电抗起动方法的探讨

Explore about the Starting Method of Rotor Circuit Seriesing Resistor and Reactor in a Wound-Rotor Induction Motor

根据异步电动机的 T型等效电路对应的电流方程、电磁转矩方程以及系统转矩平衡方程 ,用数值方法通过实例计算了转子串电阻 -电抗起动和转子串纯电阻起动两种情况下的起动电阻、起动时间和起动过程的能量损耗。通过对比分析计算结果得出了明确结论。

On the basis of the current eqution and electrical-magnetic forque eqution and system forque balance eqution of the equivalent of T model of induction motor, apply numerical method to calculate starting resistor and starting time and starting loss when seriesing pure resistor and seriesing resistor and reactor in rotor circuit. Calculation results illustrate that a wound-rotor induction motro isn't adequate to use starting method Seriesing resistor and reactor in rotor circuit.