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| Parameter Identification of Power Electronic Circuit Based on Transfer Function Model and Genetic Algorithm |
| Sun Fengyan, Wang Youren, Lin Hua, Cui Jiang, Jiang Yuanyuan |
| Nanjing University of Aeronautics and Astronautics Nanjing 210016 China |
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Abstract Parametric identification method of power electronic circuits is studied in this paper. A new method based on transfer function model in frequency domain (TFMFD) and genetic algorithm (GA) for the parameter identification of power electronic circuits is proposed. Taking the Buck converter circuit as an example, the parameter identification of power electronic circuits is achieved. Firstly, the Buck converter’s transfer function model in frequency domain is established. Secondly, the output voltage and the inductor input voltage are selected as monitoring signals. And the monitoring signals are analyzed by FFT in frequency domain, and the frequency-domain characteristics of the transfer function model are obtained. Lastly, by selecting appropriate frequency points in transfer function model, the frequency response characteristics and GA method are used to estimate the circuit’s parameter. The experimental results show that the new method can be effectively applied in the parameter identification of power electronic circuits.
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Received: 09 April 2010
Published: 07 March 2014
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2011, Vol. 26 
