基于自适应复合控制的同步电机软起动自动准同期并网控制方法  

Automatic quasi-synchronization based on adaptive complex control for synchronous motor soft starting system

作　　者：金光哲[1] 徐殿国[1] 高强[1] 寇佳宝 李志城[1] 

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,黑龙江哈尔滨150001

出　　处：《电力自动化设备》2014年第3期93-98,共6页Electric Power Automation Equipment

基　　金：国家发改委重大技术产业开发项目~~

摘　　要：相角滑差的稳定是同步电机软起动系统中自动准同期装置并网成功的关键要素。分析得出了在双闭环调速系统中,电流环动态特性非理想条件下,采用速度比例积分控制器会引起滑差的不稳定,因此提出了自适应复合速度控制方法。在升速阶段采用单比例自适应速度控制算法,克服了传统比例控制器无法消除静差的问题;在准同期阶段,采用了基于相角滑差的准同期控制算法,解决了滑差不稳定的问题,并给出了可靠的并网判决策略。实验证明了自适应复合速度控制算法的正确性,最后运用该算法实现了同步电机软起动系统可靠并网。Stable phase slip is crucial to the grid-connection of automatic quasi-synchronizing device in the synchronous motor soft starting system.Analysis reveals that,the application of PI speed controller in the dual close-loop speed control system may cause unstable phase slip if the dynamic characteristics of current loop are nonideal.A strategy of adaptive complex speed control is thus proposed,which adopts the single rate adaptive speed control algorithm to eliminate the static offset in its speedup stage while applies the quasi-synchronization control algorithm based on phase slip to make the phase slip stable in its quasisynchronization stage.Reliable grid-connection judgment is also presented.The experimental results demonstrate its validity and the reliable grid-connection of synchronous motor soft starting system is realized.

关 键 词：自动准同期 复合速度控制 相角滑差 同步电机 并网 自适应控制 软起动 

分 类 号：TM341[电气工程—电机]