变速恒频双馈异步风力发电系统建模及仿真

摘要

为研究变速恒频双馈异步风力发电系统，建立了包含风速、风力机和风力机控制部分、双馈发电机、双PWM变换器及双馈发电机机侧和网侧矢量控制变速恒频风力发电系统的动态数学模型；在Matlab／Simulink环境下，以建立相应的风力发电系统动态数学模型为基础搭建了变速恒频双馈异步风力发电系统仿真模型，并对转子侧等功率因素策略及定子侧功率解耦控制策略进行了仿真，仿真结果验证了数学模型及控制策略的有效性，整个系统模型的建立，为开展风力发电并网、低电压穿越及其他高性能控制策略研究打下基础，对于研制高性能的风电装置设备具有较好的参考价值。%In order to study variable speed constant frequency doubly-fed induction wind generator system , a whole model for variable speed constant frequency doubly -fed induction wind generator system is presented and the model includes wind speed、wind-turbine and pitch control、doubly-fed generator、double-PWM converts and electrical control of the generator . Based on the mathematic models , a simulation model is developed by using Matlab/simulink.Then power factor and power-decouple control strategy in the simulation platform are studied .The simulation results show that the model founded is correct .Using the simulation platform, the other control strategy can be researched in wind generator equipment .