直驱风电系统双PWM变流器无源混合控制  

Hybrid Control Research of Direct-Drive Wind Power Generation Dual PWM Converter

作　　者：马先芹[1] 王久和[1] 董婷婷[1] 

机构地区：[1]北京信息科技大学自动化学院,北京100192

出　　处：《电机与控制应用》2013年第12期51-56,69,共7页Electric machines & control application

基　　金：国家自然科学基金资助项目(51077005);北京市人才强教深化计划"学术创新团队计划"项目(PHR201007130)

摘　　要：结合风力机的非线性特性和双PWM变流器的控制策略,提出了转速外环和电压外环采用PI控制,电流内环采用无源控制的混合控制策略。从能量角度出发,分别建立了dq坐标系下的EL模型,为提高变流器的动态性能,采用了注入阻尼的方法,得到了无源控制律。仿真结果表明机侧变流器实现对永磁同步电机的控制和转速调节;网侧变流器实现直流电压跟踪控制、单位功率因数、交流电流正弦化。Combined nonlinear characteristics of the wind turbine and dual PWM converter＇s control strategy, a novel hybrid control strategy based on inner loop passive and outer loop PI was presented. From the point of energy, to establish EL model underdqcoordinate, respectively. In order to improve the dynamic performance of the inverter, could adopt the approach called injecting damping, and obtain the control law. The simulation resuhs showed that generator side PWM rectifier could be achieved motor control and speed control; grid side inverter could realize voltage control at DC side, unity power factor at AC side, sinusoidal AC current.

关 键 词：永磁同步电机 直驱风力发电 双PWM变流器 无源控制 

分 类 号：TM301.2[电气工程—电机]