永磁直驱风力发电机无传感器矢量控制研究  

Research on Sensorless Vector Control of Permanent Magnet Direct Drive Wind Power Generator

作　　者：易映萍[1] 刘普[2] 吴金龙 

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200090 [2]西安交通大学电气工程学院,陕西西安710049 [3]许继柔性输电系统公司,河南许昌461000

出　　处：《电气传动》2011年第4期12-15,共4页Electric Drive

基　　金：国家科技支撑项目(2007BAA12B04)

摘　　要：在背靠背直驱永磁风力发电系统中,无传感器控制技术一直是研究的热点。在双Y移30°六相永磁同步发电机数学模型的基础上,设计了一个基于饱和函数的新型滑模变结构观测器,用于估算电机的转子位置和速度。利用估算的结果,实现了永磁直驱同步风力发电机组的无传感器矢量控制。仿真和实验结果表明该设计的滑模变结构控制器对负载扰动具有很强的鲁棒性,并可以在较广的频率范围运行时准确地估算转子位置信息。而机侧系统通过监测风速变化实时调整发电机转速,达到最大风能捕获的目的。Sensorless control technology is the focus of the research in back-to-back directly driven permanent magnet synchronous generator system. Based on the mathematical model of the double Y shift 30°six phase permanent magnet synchronous generator, a saturated function-based the new sliding mode variable structure observer was designed to estimate the position and speed of rotor. The estimated results were used to realize sensorless vector control of the permanent magnet synchronous generator. Simulation and experimental results show that the design of sliding mode variable structure observer for the disturbance of load has strong robustness, and estimated exact rotor operation in a wider range of frequencies. Through monitor the change of the wind speed to adjust generator speed in order to capture the maximum wind-energy in the generator side system.

关 键 词：PWM变流器 永磁同步发电机 滑模观测器 矢量控制 

分 类 号：TM31[电气工程—电机]