应用于飞轮储能的BLDC电机功率双向流动策略设计  

Bidirectional power flow strategy design of BLDC motor for flywheel energy storage

作　　者：杨孝杰 王海云[1] 蒋中川[2] 宋章华 YANG Xiaojie;WANG Haiyun;JIANG Zhongchuan;SONG Zhanghua(College of Electrical Engineering,Xinjiang University,Urumqi 830017,Xinjiang,China;Xinjiang Goldwind Technology Co.Ltd.,Urumqi 830026,Xinjiang,China)

机构地区：[1]新疆大学电气工程学院,新疆乌鲁木齐830017 [2]新疆金风科技股份有限公司,新疆乌鲁木齐830026

出　　处：《储能科学与技术》2022年第7期2233-2240,共8页Energy Storage Science and Technology

基　　金：自治区重点研发计划项目(2020B02001);教育部创新团队项目(IRT_16R63)。

摘　　要：电机是飞轮系统实现电能与机械能相互转换的核心。BLDC(brushless direct current)电机具有体积小、噪声低、经济效益高等优点,在储能中得到了应用。为避免电机在充放电过程中产生较大绕组损耗或引入辅助电路稳定输出电压,在搭建应用于飞轮储能的BLDC电机模型基础上,提出改变晶闸管导通与关断顺序的电机充放电控制策略,改变绕组反电势与流经电流方向,实现电机充放电功能。仿真结果表明搭建的BLDC电机模型能够正确表示飞轮运行特性,也表明提出的电机充放电控制策略在不引入额外的电路拓扑结构情况下,能够使电机在充电状态吸收功率,将电能转换为飞轮动能,电机在放电状态释放功率,将飞轮动能转换为电能,并且充放电过程中相关电气量可控,从而实现功率双向流动过程,此控制策略的设计为飞轮储能的机电一体化产品实现提供一定的理论基础。Motor is the core of flywheel system to realize the mutual conversion of electric energy and mechanical energy. BLDC motor has the advantages of small volume, low noise and high economic benefit. It has been applied in energy storage. In order to avoid large winding loss during the charging and discharging process of the motor or introduce auxiliary circuit to stabilize the output voltage, based on the BLDC motor model applied to flywheel energy storage, a motor charging and discharging control strategy is proposed to change the turn-on and turn-off sequence of thyristor, change the winding back EMF and current flow direction, and realize the charging and discharging function of the motor. The simulation results show that the BLDC motor model can correctly represent the operating characteristics of the flywheel. It also shows that the proposed motor charge discharge control strategy can make the motor absorb power in the charging state, convert electric energy into flywheel kinetic energy, release power in the discharging state and convert flywheel kinetic energy into electric energy without introducing additional circuit topology, And the relevant electrical quantities are controllable in the process of charge and discharge, so as to realize the twoway flow process of power. The design of this control strategy provides a certain theoretical basis for the realization of mechatronics products of flywheel energy storage.

关 键 词：飞轮储能 功率双向流动 充放电控制策略 

分 类 号：TM33[电气工程—电机]