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A novel ZVT/ZCT PWM converter used for solar battery chargers with reduced conduction loss

Mousavian, H ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1109/ECCE.2015.7310413
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2015
  4. Abstract:
  5. In this paper a novel structure of a zero- voltage transition PWM boost converter is proposed. The main switch and diode of the converter are turned on and off under zero voltage transition. In addition the auxiliary switch and both diodes operate in ZCT condition. The auxiliary circuit consists of a transformer, a snubber capacitor and two diodes. Without imposing much current stress, the switching loss reduces significantly. So a higher efficiency converter is achieved. The simple structure and a wide range of operating current are the advantages of the proposed converter, which make it useful for solar battery chargers etc. The operation principles of the proposed converter are explained and analyzed. Experimental results of a 1 kW and 250 V output at 200 kHz prototype verify the theoretical conclusions
  6. Keywords:
  7. Boost converter ; Soft switching ; Solar battery chargers ; ZVT converter ; DC-DC converters ; Diodes ; Electric batteries ; Energy conversion ; Secondary batteries ; Solar cells ; Solar radiation ; Thermoelectricity ; Zero voltage switching ; Auxiliary circuits ; Battery chargers ; Operating currents ; Simple structures ; Snubber capacitors ; Zero voltage transition ; Charging (batteries)
  8. Source: 2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015, 20 September 2015 through 24 September 2015 ; 2015 , Pages 5357-5362 ; 9781467371506 (ISBN)
  9. URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7310413