三相异步电动机起动电阻计算方法的改进

Improvement on Three Phase Asynchronous Motor Starting Resistance Calculation Method

一般异步电动机起动电阻的计算方法,无论是作图法或解析法,往往都需要多次尝试。以作图法为基础,结合异步电动机的具体情况,推导出两个计算公式。按两公式计算之后,用作图法则可由下至上一次完成作图,用解析法则可一次计算出准确结果。通过多个实例计算,与现行使用的作图法或解析法对比,其结果非常接近,证明了这是一种行之有效的好方法。

As a normal calculation method for asynchronous motor starting resistance, whether diagram drawing or analytics, usually there should be many trials. Taking diagram as basis and combining actual situation of asynchronous motor, this paper made a deduction of two calculation formulas. After calculations from the two formulas, using diagram drawing method can draw the diagram from the lower to the upper at one time and using analytics can calculate correct result. Via many actual calculations, compared with the existing diagram drawing method or analytics used, the results are very near, which proves that this is an effective and good method.