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New Self-Commissioning Digital Power Converter with Peak Current Mode Control and Leading Edge Modulation Using Low Sampling Frequency A/D Converter

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4 Author(s)
Yen-Shin Lai ; Nat. Taipei Univ. of Technol., Taipei ; Chia-An Yeh ; Ye-Then Chang ; Ko-Yen Lee

This paper present a novel self-commissioning digital power converter control technique which will significantly reduce the sampling frequency of A/D converter while not requiring slope compensation nor resulting in performance deterioration. The technique includes self-commission of controller and power converter control. In the self-commissioning process, the circuit parameter is identified before start up and then the controller parameters of digital control are calculated automatically according to the identification results and assigned design specifications. Peak current mode control is realized based upon the estimated current using low sampling frequency A/D converter to significantly reducing the cost. Experimental results of an FPGA-based digital power converter are presented. The results show that the voltage ripple is within 3% under both steady and transient conditions.

Published in:

Industry Applications Conference, 2007. 42nd IAS Annual Meeting. Conference Record of the 2007 IEEE

Date of Conference:

23-27 Sept. 2007