单相异步电动机效率试验测量不确定度评价

Evaluation of Measurement Uncertainty for Efficiency Test of Single Phase Asynchronous Motor

对采用直接法(测功机方法)进行电机效率测量的测量结果的进行不确定度评定,建立数学模型,分析测量过程中不确定度来源。通过计算和评定,得出该方法测量的效率结果为70.86%时,扩展不确定度为0.85%。

We made an uncertainty evaluation on the results of efficiency measurement tested by direct method （hys-teresis dynamometer） on motors, established mathematical model and analyzed why the uncertainty existing during the measurement. After calculation and evaluation, when the result came out to be 70.86 %, the expanded uncertainty was 0.85 %.