摘要
针对大容量12/3相双绕组异步发电机的励磁控制要求,选用级联式2单元拓扑结构,提出了一种dq坐标系下的励磁控制方法。所提出的微调d分量对级联式无功补偿装置直流侧电容电压进行均压控制的方法可在不影响总输出电流的同时,对直流侧电容电压进行均压,相对于传统的移相均压控制方法,该方法实现了均压控制与励磁电流的完全解耦。理论分析和仿真结果验证了所提出方法的正确性。
According to the excitation requirement of 12/3 phase dual stator-winding induction generator (DWIG), by use of cascaded converter with two-unit topology an excitation control approach under dq coordinate system is proposed. In accordance with the capacitor voltage equalization control at DC side, a capacitor voltage equalization control approach using fine adjustment of d component, which can implement equalization control of capacitor voltage while the amplitude and phase of total excitation current are not changed, is put forward. Differing from traditional phase-shifting voltage equalization control methods, the given approach realizes the complete decoupling of voltage equalization and excitation current. The results from theoretical analysis and simulation validate the correctness of the proposed method.
出处
《电网技术》
EI
CSCD
北大核心
2008年第12期39-44,共6页
Power System Technology
基金
国家自然科学基金资助项目(50607020
50421703)~~
关键词
双绕组
异步发电机
励磁
级联变换器
均压
dual stator-winding
induction generator
excitation
cascaded converter
voltage equalization