电工技术学报2017，Vol.32Issue(24)：233-243,11.DOI:10.19595/j.cnki.1000-6753.tces.151656
负序及谐波畸变电网电压下双馈风力发电系统的改进直接功率控制策略
Improved Direct Power Control Strategy of DFIG System under
Unbalanced and Distorted Grid Voltage
周波 1宋亦鹏 2年珩 2程晨闻2
作者信息
- 1. 国网四川电科院 成都 610072
- 2. 浙江大学电气工程学院 杭州 310027
- 折叠
摘要
Abstract
As the stator windings are directly connected to the power grid, the unbalanced and harmonic components (mainly 5th and 7th harmonics) in grid voltage can severely deteriorate the operation performance of doubly fed induction generator (DFIG) system. As a result, current imbalance, harmonic distortion, pulsated active and reactive powers, and fluctuated electromagnetic torque will be generated. It causes damages to the DFIG system and jeopardizes the wind power qualities. Therefore, this paper proposes an improved direct power control (DPC) strategy for the rotor side converter and grid side converter, where the current or power quality of total DFIG system is improved by constructing additional second order vector integral closed loop for them. The proposed strategy has been validated with experiments on a DFIG rig.关键词
负序和谐波畸变电网电压/双馈异步发电机/机侧变流器/网侧变流器/直接功率控制/二阶矢量积分器Key words
Unbalanced and distorted grid voltage/doubly fed induction generator/rotor side converter/grid side converter/direct power control/second order vector integral分类
信息技术与安全科学引用本文复制引用
周波,宋亦鹏,年珩,程晨闻..负序及谐波畸变电网电压下双馈风力发电系统的改进直接功率控制策略[J].电工技术学报,2017,32(24):233-243,11.
