摘要
阐述了变速风电系统中直驱永磁同步发电机的运行控制。发电机通过全功率控制的变-直-交电路连接到电网上,功率变换电路由脉宽调制(PWM)的整流器、中间直流电路环节、PWM逆变器组成。控制发电机在不同负载条件下从随机变化的风中最有效地获得输出功率。对网侧逆变器采用矢量控制来调节风电系统的功率因数。最后对系统进行了仿真,仿真结果证明了提出的系统的有效性。
The operation and control of variable -speed directly driven permanent magnet synchronous generators wind system were described. This generator was connected to the power by means of a fully controlled frequency converter, which consisted of a pulsewidth - modulation （ PWM ） rectifier, an intermediate DC circuit, and a PWM inverter. The generator was controlled to capture maximum power from the changing wind with maximum efficiency under different load conditions. Vector control of inverter allowed power factor regulation of the windmill. The simulation results had been carried out to verify the benefits of the proposed system.
出处
《微特电机》
北大核心
2008年第6期51-54,共4页
Small & Special Electrical Machines
关键词
永磁同步发电机
风能
功率变换器
直接驱动
permanent magnet synchronous generator
wind energy
power converter
direct drive
