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Front. Inform. Technol. Electron. Eng.  2013, Vol. 14 Issue (12): 953-965    DOI: 10.1631/jzus.C1300125
    
Comparison of resonant current regulators for DFIG during grid voltage distortion
Yi-peng Song, Heng Nian
College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
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Abstract  We investigate two different kinds of resonant current regulators for a doubly fed induction generator (DFIG) under distorted grid voltage conditions: proportional integral resonant (PIR) regulator with traditional resonant part and vector proportional integral (VPI) regulator with VPI resonant part. Based on the mathematical model of DFIG under distorted grid voltage, the transfer function and frequency response characteristics of the two current regulators are analyzed and compared. The superiority of the VPI current regulator over the PIR regulator is pointed out, and the influence of discretization methods on the performance of the resonant current regulator is studied. All the results are validated by MATLAB simulation and experiments.

Key words： Doubly fed induction generator      Harmonically distorted grid voltage      Resonant current regulator      Vector PI current regulator      Discretization method     
Received: 12 May 2013      Published: 06 December 2013
CLC:  TM31  
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Cite this article:

Yi-peng Song, Heng Nian. Comparison of resonant current regulators for DFIG during grid voltage distortion. Front. Inform. Technol. Electron. Eng., 2013, 14(12): 953-965.

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http://www.zjujournals.com/xueshu/fitee/10.1631/jzus.C1300125     OR     http://www.zjujournals.com/xueshu/fitee/Y2013/V14/I12/953


Comparison of resonant current regulators for DFIG during grid voltage distortion

We investigate two different kinds of resonant current regulators for a doubly fed induction generator (DFIG) under distorted grid voltage conditions: proportional integral resonant (PIR) regulator with traditional resonant part and vector proportional integral (VPI) regulator with VPI resonant part. Based on the mathematical model of DFIG under distorted grid voltage, the transfer function and frequency response characteristics of the two current regulators are analyzed and compared. The superiority of the VPI current regulator over the PIR regulator is pointed out, and the influence of discretization methods on the performance of the resonant current regulator is studied. All the results are validated by MATLAB simulation and experiments.

关键词： Doubly fed induction generator,  Harmonically distorted grid voltage,  Resonant current regulator,  Vector PI current regulator,  Discretization method 
[1] Heng Nian, Yi-peng Song. Multiple target implementation for a doubly fed induction generator based on direct power control under unbalanced and distorted grid voltage[J]. Front. Inform. Technol. Electron. Eng., 2015, 16(4): 321-334.