基于双馈风力发电机三相短路的参数辨识  

Parameters Recognition Based on Three-phase Shortcircuit of Double-fed Wind Generator

作　　者：张建华[1] 辛付龙[1] 莫岳平[1] 王健[1] 

机构地区：[1]扬州大学能源与动力工程学院,江苏扬州225127

出　　处：《电气传动》2012年第9期7-10,共4页Electric Drive

基　　金：江苏省高校自然科学基础研究项目(08KJD480001)

摘　　要：在双馈风力发电机组中多采用矢量控制对双馈风力发电机转速进行控制,为了给矢量控制提供更精确的电机参数,提高矢量控制的效果,提出基于发电机突然三相短路的参数辨识方法。研究发现三相短路电流中存在直流分量、交流基波分量和交流谐波分量,各分量的变化规律由双馈风力发电机的参数、转差率及转子励磁电压决定;将短路电流波形各电流分量分离,与短路电流表达式对比即可辨识出电机内部参数;利用1.5MW双馈风力发电机的仿真数据验证了辨识方法的可行性,且保持了较高的正确性。In the double-fed wind turbine vector control is mostly adopted for doubly fed wind generator speed control. In order to provide a more accurate vector control motor parameters and improving the effective- ness of vector control, the parameter identification method was put forward based on three-phase generator sud- den short circuit. Study found that there are DC component, AC fundamental and AC harmonics in the cur- rent, which influenced by the DFIG parameters, slip and rotor excitation voltage; Separating short-circuit cur- rent waveform of each current component, compared with the short-circuit current expression can be identified the inner parameters of the motor. Through 1.5 MW doubly-fed wind generator simulation data validates the feasibility of the identification method and proves the feasibility and accuracy.

关 键 词：双馈风力发电机 三相短路 参数辨识 电流分量 

分 类 号：TM614[电气工程—电力系统及自动化]