基于DVR的感应电动机柔性快速再启动方法  

Flexible and fast restart of induction motor based on DVR

作　　者：黄迪[1] 曾正[1] 邵伟华[1] 胡博容 黄文涛[1] 冉立[1] HUANG Di ZENG Zheng SHAO Weihua HU Borong HUANG Wentao RAN Li(State Key Laboratory of Power Transmission Equipment ＆ System Security and New Technology, Chongqing University,Chongqing 400044,Chin)

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044

出　　处：《电力自动化设备》2017年第1期197-203,共7页Electric Power Automation Equipment

基　　金：中央高校基本科研业务费专项资金资助项目(1061120-15CDJXY150005;CDJZR12150074)~~

摘　　要：对感应电动机失电后存在的残压影响及其再启动的问题进行了研究,提出利用动态电压恢复器补偿一个幅值和相位逐渐变化的"柔性电压",保证电动机的供电电压在再启动初始时刻和残压相等,随后幅值逐渐增大、相位逐渐移动直到和电源电压相等,使得感应电动机可以快速再启动,同时可以大幅减小再启动过程中的冲击电流和冲击转矩。提出了一种无静差地跟踪"柔性电压"的控制方法,通过对比分析,说明所提控制方法具有简单、可靠、快速的特点;通过理论分析及软件仿真,证明了所提控制方法的有效性以及动态电压恢复器在感应电动机再启动方面应用的可行性。The effect of residual vohage on the restart of induction motor after its power-loss is studied and a fast restart scheme is proposed,which applies DVR（Dynamic Voltage Restorer） to compensate a ＂flexible voltage＂ with gradually-varied amplitude and phase. It ensures the input voltage at the initial moment of motor restart equal to the residual voltage and then gradually increases its amplitude and shifts its phase until equal to the power-supply voltage for greatly reducing the current surge and torque shock during the fast restart. A control strategy is proposed to track the ＂flexible voltage＂ with zero steady-state error and the comparative analysis shows it simple,reliable and fast. Theoretical analysis and software simulation prove the effectiveness of control strategy and the feasibility of DVR application in induction motor restart.

关 键 词：感应电动机 残压 柔性再启动 动态电压恢复器 多谐振调节器 无静差控制 

分 类 号：TM346[电气工程—电机]