电机与控制应用2016，Vol.43Issue(5)：88-92,5.
一种异步电动机效率的二次辨识检测方法∗
An Double Identification Algorithm for the Efficiency Test of Asynchronous Motor
摘要
Abstract
In view of the problem that the motor’s output power can’t be measured directly and the motor’s operating efficiency was difficult to be obtained directly in the industrial field, an algorithm for efficiency monitoring based on double identification method was proposed. The initial identification was completed by a FFT analysis for acquired electrical signal. The estimated value of motor speed was gotten according to the measured input power. And the exact value of the speed was calculated by the second identification on the estimated value. The motor efficiency value was gotten finally. The algorithm was realized on the detection system for the motor efficiency based on the embedded sensor network, which could improve the efficiency of the motor efficiency measurement. The error of measured value and actual value is about 2% at high load stage, while the error was about 4% at low load stage showed by the experimental results, which provides a reference for the motors’ energy efficiency testing in engineering practice.关键词
三相异步电动机/效率检测/二次辨识法/快速傅里叶变换Key words
three phase asynchronous motor/efficiency monitoring/double identification method/fast fourier transform( FFT)分类
信息技术与安全科学引用本文复制引用
于竞哲,卢泉..一种异步电动机效率的二次辨识检测方法∗[J].电机与控制应用,2016,43(5):88-92,5.基金项目
国家自然科学基金资助项目(51177018) （51177018）
南宁市科技攻关资助项目(20141049) （20141049）
