The Parameter Identification Of The Doubly Fed Induction Generator

In this paper, we studied the off-line parameter identification method of the doubly-fed induction generator, based on the LabVIEW and NI DAQ(data acquisition) device was constructed doubly-fed machine data acquisition and parameter identification platform, and on this basis to achieve the identification algorithm. Doubly-fed machine data acquisition and parameter identification platform to record motor operation in the whole process of data analysis by off-line data can be double-fed machine's operating status at any time, to understand the whole motor inductance and resistance during the operation of motor trend of the parameters for the motor control strategy provides a convenient and effective means of research.Motor parameter identification methods are based on certain mathematical model of motor proposed, this paper introduces two-fed machine T-equivalent circuit of DFIG in the static coordinate system mathematical model and the double-fed machine in the synchronous rotating reference frame the mathematical model, and discussed the double-fed motor control algorithms, have seen the motor resistance, leakage inductance, mutual inductance and the stator flux and other parameters directly related to the accuracy of double-fed motor control performance. This article focuses on the double-fed motor stator and rotor resistance, leakage inductance and mutual inductance of the identification method and the double-fed motor stator flux identification method.LabVIEW is National Instruments (NI) developed a set of specialized data acquisition and instrument control software, a graphical programming language (G Language) as the basic programming language, provides a wealth of data processing and hardware I/O functions a great convenience for engineers collect, store and analyze data. NI USB-6251 is a NI of a data acquisition device, Based on LabVIEW2009 and NI USB-6251 set up the double-fed motor parameter identification platform, using the graphical programming language programming to realize the double-fed motor parameter identification, experimental results show that this identification method.