电动机启动压降精确计算及比较  

Accurate Calculation and Comparisons of the Voltage Drop During Motor Starting

作　　者：段梦菲 杨嘉城 Duan Mengfei;Yang Jiacheng(Siemens Transformer(Guangzhou)Co.,Ltd.,Guangzhou 510630,China;Guangzhou Public Utilities Planning&Design Institute Co.,Ltd.,Guangzhou 510260,China)

机构地区：[1]广州西门子变压器有限公司,广州510630 [2]广州市公用事业规划设计院有限责任公司,广州510260

出　　处：《机电工程技术》2021年第6期110-115,共6页Mechanical & Electrical Engineering Technology

摘　　要：以《工业与民用供配电设计手册》第四版电动机启动压降计算公式作为切入点,引出相对精确的电动机启动压降计算公式。通过多种计算方法比较,发现由于手册中给出的计算公式过度简化,所算得的结果与精准计算、仿真结果相差2%左右。这偏差对于有较高计算精准度要求的设计选型是不利的。因此通过比较,引出较为精准的计算方法,以代替手册中给出的电动机启动压降计算公式。Based on the calculation formula of motor starting voltage drop in the fourth edition of industrial and civil power supply anddistribution design manual,a relatively accurate calculation formula of motor starting voltage drop was derived.Through the comparison ofvarious calculation methods,it is found that due to the over simplification of the calculation formula given in the manual,the differencebetween the calculated results and the accurate calculation and simulation results is about 2%.This deviation is disadvantageous to the designtype selection with high calculation accuracy.Therefore,through comparison,a more accurate calculation method was introduced to replace thecalculation formula of motor starting voltage drop given in the manual.

关 键 词：电动机启动计算 母线电压 电动机端子电压 精确计算 仿真计算 

分 类 号：TM32[电气工程—电机]