电励磁同步电机惯性储能直流馈电系统新型单位功率因数控制  

A Novel Unity Power Factor Control of Electrically Excited Synchronous Motor in an Inertia Wheel Energy Storage System

作　　者：刘洋 史黎明[1] 赵鲁[1] 李耀华[1] 

机构地区：[1]中国科学院电力电子与电气驱动重点实验室(中国科学院电工研究所),北京100190 [2]中国科学院大学,北京100190

出　　处：《电工技术学报》2016年第1期147-154,共8页Transactions of China Electrotechnical Society

基　　金："十二五"国家科技支撑计划重大项目资助(2013BAG19B00-04-01)

摘　　要：电励磁同步电机惯性储能直流馈电系统中,同步电机存在定子磁链幅值、功率因数和直流母线电压3个控制自由度。为减少系统的无功功率,并提高系统的效率,需控制直流母线电压基本恒定以及提高系统的功率因数。该文从上述两个控制需求出发,提出一种电励磁同步电机新型单位功率因数控制方法,该方法采用转子磁场定向,对功率因数和直流母线电压进行闭环控制,将三自由度降为二自由度。仿真计算和在电励磁同步电机惯性储能系统平台上的实验结果表明,与传统的电机直轴电流为零的控制方法相比,该文提出的方法在保证直流母线电压基本恒定的同时,使同步电机的功率因数提高至0.97,视在功率减少28%,可有效减少系统无功功率。In the electrically excited synchronous motor（ ESM） based inertia wheel energy storage DC supply system,there are three degrees of freedom from the control consideration,i. e. the stator flux,the power factor,and the DC-link voltage. To reduce the system reactive power and increase the efficiency,the DC-link voltage should be stabilized and the power factor should be increased. In this paper,a novel unity power factor control scheme for ESM is proposed,in which we degrade the control freedom and perform the close-loop control on power factor and DClink voltage in a rotor-oriented reference frame. Simulation and experiment carried out in an inertia wheel energy storage system show that,compared with the traditional isd= 0 scheme,the proposed scheme increases the power factor to0. 97,and realizes a 28% down of the apparent power,which effectively reduces the system reactive power.

关 键 词：同步电机 惯性储能 电励磁 磁场定向控制 单位功率因数 

分 类 号：TM315[电气工程—电机]