永磁直驱风力发电系统变流器控制策略研究  

Research on Control Strategies in Permanent-magnet Direct-driven Wind Power Conversion System

作　　者：邓庆伟[1] 刘稳[1] 杜清潭[1] 房康宁[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221116

出　　处：《电气传动》2014年第1期31-35,44,共6页Electric Drive

摘　　要：针对变速恒频风力发电技术(VSCF),对风力机的数学模型进行了分析,通过最佳叶尖速比实现了对风力机的最大风能跟踪(MPPT)。在研究了永磁同步发电机(PMSG)和变流器的数学模型的基础上提出了对机侧变流器和网侧变换器分开控制的策略,控制机侧变流器来调节发电机的转速,控制网侧变流器向电网输送稳定、恒频的电能。并在Matlab/Simulink平台下搭建了相应的仿真模型,仿真结果表明控制策略可行。The mathematic model of the wind turbine based on the study of VSCF was analysed,and enabled the wind power system to run at the maximum efficiency by using adopted MPPT method-optimum tip speed ratio.Based on the mathematic model of the PMSG and the converter,the generator converter and the grid converter independently was controlled.The speed of the generator was controlled by the converter of the generator,and controlling the converter of the grid can produce constant voltage and constant frequency which delivers to the power grid.Then the simulation was completed in the Matlab/Simulink,and results show that the theoretical analysis above is correct.

关 键 词：永磁同步发电机 双PWM变流器 矢量控制 最大功率跟踪 

分 类 号：TM614[电气工程—电力系统及自动化]