双馈电机并网前参数优化  

Doubly-fed Motor Parameters Optimization Before Connecting to the Grid

作　　者：谢钊文 呼小亮[1] 李学锋[1] 

机构地区：[1]中国矿业大学信息与电气工程学院,江苏徐州221008

出　　处：《电气传动》2015年第3期68-71,共4页Electric Drive

摘　　要：分析了双馈并网发电机并网前的数学模型,针对传统电流环的PI调节存在参数整定复杂的问题,引入了含有积分控制的线性二次型最优控制算法LQRI。在双馈电机并网前空载的前提下,建立dq坐标系下的数学模型,给出了双馈电机并网前控制框图,并详细设计了电流内环的LQRI控制算法。针对湘电1.5 MW双馈电机,采用DSP2812进行控制,验证了改进算法的良好性能,消除了LQR控制存在的稳态误差问题,系统的动态、静态性能得到改善。The mathematical model of doubly- fed before the grid interconnection was analyzed,in view of thetraditional current loop of PI adjustment has the problem of parameter setting,the linear quadratic optimal controlalgorithm LQRI was introduced. Under the premise of the doubly-fed motor hooked up to the light before connecting tothe grid,a mathematic model of the dq coordinates was built,the control block diagram of doubly-fed motor beforeconnecting to the grid was given,and the detailed design LQRI control algorithm based on the current inner ring wasalso given. For the Hunan electric 1.5 MW doubly-fed motor,used the DSP2812,verified the good performance of theimproved algorithm,eliminated the problem of steady- state error,the LQR control system dynamic and staticperformance is improved.

关 键 词：双馈电机 线性二次型最优控制 参数优化 数字信号处理器 

分 类 号：TM32[电气工程—电机]