异步电动机串电阻起动的一种新的计算及控制方法

A New Calculus and Control Method for Wound Asynchronous Motor under the Starting Condition with Symmetrical Resistance

介绍了异步电动机转子串电阻起动的一种新的计算和控制方法。利用异步电动机机械特性实用表达式，从电网要求起动电流出发推导出了起动电阻新的计算公式，提出了起动电阻器新的接线方法，得到了用少量的起动电阻段数获得较多的起动级数的优点，从而使其控制线路更为简单和可靠。

This paper presents a new calculus formula and control method for the starting resistance in the rotator of wound asynchronous motor.By using the practical expression of the mechanical characteristics of asynchronous motor and from the starting courrent required by power grid,a new calculus formula for starting resistance was deduced and a new mode of connection for starting resistance was offered to have the advantage of more starting series with less segment number resistance,therefor it makes the control circuitry more simple and reliable.