感应电机快速投入控制参数的解析  

Analytical Method on Control Parameter of Quick Switching on Induction Motor Load

作　　者：李卫国[1] 崔学深[1] 罗应立[1] 王义龙[1] 

机构地区：[1]华北电力大学新能源电力系统国家级重点实验室,北京102206

出　　处：《电工技术学报》2013年第3期154-160,共7页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(51077048)

摘　　要：提出一种基于真空断路器与晶闸管阀并联方式构成的复合开关快速投入感应电机负载控制参数解析研究方法,即先投入两相定子绕组,然后再投入第三相定子绕组,从而实现在一个工频周期内完成三相定子绕组快速全投入、抑制冲击电流、低损耗、低成本和高可靠性之目的。基于在同步转速附近和无残压约束条件下感应电机非对称-对称数学模型,运用解析方法推导出快速投入控制参数与感应电机参数的函数关系,并利用仿真和实验录波验证技术的可行性。基于复合开关快速投入感应电机负载控制方法能有效解决速动性与可靠性之间的矛盾,为感应电机负载控制提供一条崭新的工程化解决方案。基于感应电机在非对称-对称模型的定子电流瞬态解析方法为进一步实现有残压条件下感应电机快速投入控制参数研究提供理论支持。The control parameter analytical technique on quick switching on induction motor with hybrid switch made of vacuum breaker and thyristor valve in parallel connection was proposed. This technique was namely that two phase windings were conducted firstly and the third phase winding was conducted later in order to realize three phase windings to be conducted in one power cycle rapidly, and suppress inrush current with advantage of low loss, low cost and high reliability. Based on the non symmetry to symmetry induction motor mathematical model in the condition of about synchronous speed and no stator residual voltage, the function relationship between the control parameter of quick switch and induction motor parameter was deduced. The validity can be verified by Matlab simulation and engineering test. The technique on quick switching on induction motor with hybrid switch can solve conflict between speediness and reliability and will be a new method for induction motor control in engineering project. The mathematical analytical method of induction motor stator current based on the non symmetry to symmetry mathematical model is providing the theoretical foundation further for quick switch on induction motor in the condition of residual voltage of stator.

关 键 词：感应电机 快速投入 复合开关 空间矢量 初始触发角 第三相触发角 

分 类 号：TM351[电气工程—电机]