摘要
针对直驱型风力发电机组中整流环节的高功率因数的要求,在研究三相电压型整流器工作原理的基础上建立了基于前馈解耦的双闭环控制系统模型,采用SVPWM调制方法,实现了交流侧功率因数可调,得到了稳定的直流电压。运用Matlab/Simulink对系统进行了仿真,以额定转速为220 r/min、额定转矩为1 000 N.m的PMSG模型作为交流源,在三种不同风速下对系统进行仿真分析。仿真结果验证了方案的优越性和可行性,为直驱型风力发电系统的研究及大规模应用奠定了基础。
A feed-forward decoupling strategy based double closed-loop control system was built to satisfy the request of a high power factor in the rectification part of direct-drive wind turbines. The working principle of three-phase VSR was analyzed and SVPWM was used as the modulating method. The system was modeled and simulated with Matlab/Simulink. A PMSG model with a rated speed of 220 r/min and rated torque of 1 000 N · m was used, and simulations and analysis were conducted at three different wind speeds. The goal of a high power factor was achieved and a steady voltage in the DC side was obtained. The results prove the feasibility and advantages and provide the foundation for the research and application of direct-drive wind turbines.
出处
《微特电机》
北大核心
2010年第5期67-69,共3页
Small & Special Electrical Machines
