双馈感应风力发电机低电压穿越控制策略  

Low Voltage Ride Through Control Strategy of Doubly Fed Induction Generator

作　　者：甄佳宁[1] 陈益广[1] 王颖[2] 

机构地区：[1]天津大学智能电网教育部重点实验室,天津300072 [2]天津经济技术开发区汉沽现代产业区总公司,天津300480

出　　处：《电力系统及其自动化学报》2013年第5期88-91,共4页Proceedings of the CSU-EPSA

摘　　要：针对双感应馈风力发电机低电压穿越问题,提出了一种新型的转子侧变流器控制策略,该控制策略采用基于定子磁链定向的矢量控制方法,对转子稳态励磁电流添加补偿量,得到新的转子电流励磁给定值,抵消了定子磁链直流分量和负序分量对转子电流的部分影响,并能够有效地抑制双馈感应发电机转子过电流,增强了双馈感应风力发电机的低电压穿越能力。Matlab仿真结果验证了该控制策略的有效性和可行性。For low voltage ride through issue of doubly fed induction generator, a new control strategy for rotor side converter is proposed in this paper. The control strategy uses stator flux oriented vector control to add a compensation amount to the rotor steady-state excitation current. A new given value of rotor excitation current is obtained, which can partly offset the impact of DC and negative sequence component of stator flux on the rotor current. Over current in the rotor can be effectively suppressed, and the LVRT capabihty of DFIG is enhanced. Matlab simulation results prove the validity and feasibility of the proposed control strategy.

关 键 词：风力发电 双馈感应风力发电机 低电压穿越 电压骤降 转子变换器 

分 类 号：TM614[电气工程—电力系统及自动化]