摘要
脉宽调制(pulse width modulation,PWM)变换器能灵活调节功率和功率因数,可用作风力发电机和电网之间的功率接口。文章深入研究了PWM变换器的建模,建立了基于简化等效模型的旋转坐标下的数学模型和PWM变换器各部分数学模型。对风力发电PWM变换器的控制策略和控制器设计进行了讨论,使用Matlab工具建立了PWM变换器的仿真模型,仿真结果表明了PWM变换器建模和控制策略的正确性。用dSPACE硬件在回路平台上构建了实验系统,实验结果验证了文中仿真建模的正确性。
Pulse width modulation （PWM） converter can adjust power and power factor flexibly, so it can be used as the power interface between wind power generators and power grid. In this paper, the modeling of PWM converter is researched in depth, and the mathematical model based on simplified equivalent circuit of PWM converter under rotational coordinates and the models of each several parts of PWM Converter are built. The control strategy of PWM converter for wind power generation and the design of the controller are investigated, and by use of Matlab software the simulation model of PWM converter is built. Simulation results show that the modeling of PWM converter and its control strategy are correct. Based on dSPACE 1103 real-time simulation system, an experimental system is constructed on circuit platform and the correctness of the proposed simulation modeling is verified by experimental results.
出处
《电网技术》
EI
CSCD
北大核心
2009年第20期43-48,共6页
Power System Technology
基金
国家863高技术基金项目(2007AA05Z457)
国家自然科学基金资助项目(50777008
50977011)~~
