基于功率匹配的异步电机最大效率控制  

Asynchronous Motor Maximum-Efficiency Control by Adjusting Ratio of Active Power to Reactive Power

作　　者：林友杰[1] 谢卫才[1] 吴汉光[2] 

机构地区：[1]湖南工程学院电气信息工程学院,湖南湘潭411101 [2]福州大学电气工程与自动化学院,福建福州350002

出　　处：《电机与控制应用》2009年第10期51-54,共4页Electric machines & control application

基　　金：湖南省教育厅一般项目(08C218)

摘　　要：分析了在变频调速的情况下,通过调节有功功率和无功功率的比例(功率匹配比)来实现异步电机的最大效率控制的一种策略。分析表明在给定负载转速的情况下,通过调节功率匹配比,可以使电机运行在最大效率下;同时,也分析了在最大效率控制下的电压、转矩的变化情况。In the VVVF case,asynchronous motor's maximum efficiency control by adjusting the ratio of active power to reactive power(that is the power matching ratio) is investigated.The study shows that once the motor's demanded velocity is given,it can operate at the maximum efficiency by varying the frequency to make the ratio of active power to reactive power reasonable.The relative items' effect such as torque and voltage at maximum efficiency control are also investigated.

关 键 词：异步电机 变频调速 最大效率控制 

分 类 号：TM343[电气工程—电机]