摘要
变速风力发电机高效利用风能所需的风能最大功率点追踪(MPPT)算法的关键在于能否根据风速变化快速调节风轮转速,使其迅速达到相应的最佳转速。采用直接转矩控制思想以达到此目标,首先介绍了风力发电机空气动力学特性及永磁同步电机直接转矩控制原理,然后通过空间矢量脉冲宽度调制(SVPWM)直接电流控制的整流器实时控制其输出电流跟踪指令电流的方法实现变速风力发电机中的MPPT控制。仿真研究证明该方法具有控制简单、跟踪响应快的特点,能够达到风能的MPPT算法要求。
The key of MPPT（Maximum Power Point Tracking） is to adjust the rotate speed of wind turbine quickly according to the variable wind speed for high efficiency. The direct torque control theory is adopted to reach it. The aero-dynamical characteristic of the wind turbine and the direct torque control of PMSG are introduced. The SVPWM （Space Vector Pulse Width Modulation ） direct current regulated rectifier is applied to real-timely control the output current following the instruction current in MPPT. The simulation results demonstrate that the proposed method,with simple control and fast response, meets the requirements of wind generation MPPT.
出处
《电力自动化设备》
EI
CSCD
北大核心
2006年第5期19-22,共4页
Electric Power Automation Equipment
