摘要
针对直驱式永磁同步风力发电系统最大功率点跟踪问题,通过风力机、永磁同步发电机、三相不控整流桥、DC-DC变换器等的等效电路分析,建立了系统的稳态数学模型,推导出交流侧电功率的计算、最大功率点的捕获与直流电压等的相关计算公式,进而采用功率信号反馈(PSF)算法实现最大功率点跟踪(MPPT)控制,然后在Matlab/Simulink中搭建模块对系统进行仿真,仿真结果验证了系统的可行性。
Aiming at the maximum power point tracking（MPPT） problem on direct-drive permanent magnet synchronous generator of wind power system,a steady state modeling is built based on the equivalent circuit analysis of wind turbine,permanent magnet synchronous generator,diode-rectifier and Boost chopper DC-DC converter.The power equations and calculation methods of AC output from wind generator,the maximum power capture and DC voltage can be obtained by the model.The control strategy of the maximum power point tracking（MPPT） has been developed using PSF algorithm then.Finally,the system simulation has been established with Matlab/Simulink and the simulation results validate the feasibility of the system.
出处
《电源学报》
2011年第3期13-20,共8页
Journal of Power Supply
基金
国家自然科学基金资助项目(51007056)
上海市教委科研创新重点项目(09ZZ162)
上海市教委重点学科建设项目(J50602)
关键词
风力发电
等效电路分析
稳态模型
最大功率点跟踪(MPPT)控制
wind turbine
equivalent circuit analysis
steady state modeling
control strategy of the maximum power point tracking
