access icon free Analysis and implementation of an interleaved series input parallel output active clamp forward converter

© The Institution of Engineering and Technology
Received 23/11/2011, Accepted 05/06/2012, Revised 13/04/2012, Published

A novel dual active clamp forward topology with interleaved series input parallel output (ISIPO) structure is proposed here. The ISIPO active clamp forward converter enables the converter cells to share the input voltage and output current. The interleaved operation can diminish the output current ripple in the output capacitor. The output capacitance of switching devices and the resonant inductance are utilised to realise the resonance at the transition interval of switches such that the zero-voltage-switching operation for all switches can be achieved. Moreover, the energy stored in the transformer leakage inductance is recycled such that the voltage stresses of switching devices are reduced. All these features make the proposed converter suitable for the DC–DC converters with high input voltage, high output current and high-efficiency applications. The operating principle and design considerations are provided in detail. Finally, experimental results based on a 240 W(12 V/20 A) prototype with an input voltage of 400 V are presented to verify the theoretical analysis and circuit performance.

Inspec keywords: capacitor switching; power transformers; resonance; switching convertors; zero voltage switching; switches; DC-DC power convertors; inductance

Other keywords: ZVS; converter cell; resonant inductance; switching device; voltage 400 V; active clamp forward convertor topology; capacitor; zero voltage switching; energy storage; transformer leakage inductance; power 240 W; resonance; DC-DC converter; current ripple; ISIPO; switch transition interval; interleaved series input parallel output

Subjects: Transformers and reactors; Relays and switches; Power convertors and power supplies to apparatus

References

    1. 1)
      • 5. Mao, H., Yao, L., Wang, C., Batarseh, I.: ‘Analysis of inductor current sharing in nonisolated and isolated multiphase dc-dc converter’, IEEE Trans. Ind. Electron., 2008, 54, (6), pp. 3379–3388 (doi: 10.1109/TIE.2007.905966).
    2. 2)
      • 15. Tuomainen, V., Kyyrä, J.: ‘Effect of resonant transition on efficiency of forward converter with active clamp and self-driven SRs’, IEEE Trans. Power Electron., 2005, 20, (2), pp. 315–323 (doi: 10.1109/TPEL.2004.843008).
    3. 3)
      • 11. Acik, A., Cadirci, I.: ‘Active clamped ZVS forward converter with soft-switched synchronous rectifier for high efficiency, low output voltage applications’, IEE Proc. Electr. Power Appl., 2003, 150, pp. 165–174 (doi: 10.1049/ip-epa:20030151).
    4. 4)
      • 14. Lim, B.S., Kim, H.J., Chung, W.S.: ‘A self-driven active clamp forward converter using the auxiliary winding of the power transformer’, IEEE Trans. Circuits Syst., 2004, 51, (10), pp. 549–551 (doi: 10.1109/TCSII.2004.836039).
    5. 5)
      • 2. Jin, T., Zhang, K., Zhang, K., Smedley, K.: ‘A new interleaved series input parallel output forward converter with inherent demagnetising features’, IEEE Trans. Power Electron., 2008, 23, (2), pp. 888–895 (doi: 10.1109/TPEL.2007.914813).
    6. 6)
      • 17. Jeong, G.Y.: ‘High efficiency asymmetrical half-bridge converter using a self-driven synchronous rectifier’, IET Power Electron., 2008, 1, (1), pp. 62–71 (doi: 10.1049/iet-pel:20070054).
    7. 7)
      • 9. Lo, Y.K., Kao, T.S., Lin, J.Y.: ‘Analysis and design of an interleaved active clamping forward converter’, IEEE Trans. Ind. Electron., 2007, 54, (4), pp. 2323–2332 (doi: 10.1109/TIE.2007.899975).
    8. 8)
      • 16. Yang, S.P., Lin, J.L., Chen, S.J.: ‘A novel ZCZVT forward converter with synchronous rectification’, IEEE Trans. Power Electron., 2006, 24, (4), pp. 912–922 (doi: 10.1109/TPEL.2006.876879).
    9. 9)
      • 18. Murthy-Bellur, D., Kazimierczuk, M.K.: ‘Zero-current-transition two-switch flyback pulse-width modulated DC–DC converter’, IET Power Electron., 2011, 4, (3), pp. 288–295 (doi: 10.1049/iet-pel.2009.0253).
    10. 10)
      • 7. Texas Instruments: ‘200-W interleaved forward converter design review using TI's UCC28221 PWM controller’, TI, Inc., Application  Notes, 2004.
    11. 11)
      • 4. Torrico-Bascop, R., Barbi, N.: ‘A double ZVS-PWM active-clamping forward converter: analysis, design, and experimentation’, IEEE Trans. Power Electron., 2001, 16, (6), pp. 745–751 (doi: 10.1109/63.974372).
    12. 12)
      • 3. Qian, T., Lehman, B.: ‘Dual interleaved active-clamp forward with automatic charge balance regulation for high input voltage application’, IEEE Trans. Power Electron., 2008, 23, (1), pp. 38–44 (doi: 10.1109/TPEL.2007.911796).
    13. 13)
      • 1. Tan, F.D.: ‘The forward converter: from the classic to the contemporary’. Proc.17th Annu. IEEE APEC'02, 2002, pp. 857–863.
    14. 14)
      • 10. Lin, B.R., Chen, J.J., Dong, J.Y.: ‘Analysis and implementation of an interleaved soft switching converter’, IET Power Electron., 2011, 4, (6), pp. 663–673 (doi: 10.1049/iet-pel.2010.0028).
    15. 15)
      • 6. Lin, B.R., Shih, K.L., Chen, J.J.: ‘Interleaved DC–DC zero-voltage switching converter with series-connected in the primary side and parallel-connected in the secondary side’, IET Power Electron., 2011, 4, (2), pp. 257–268 (doi: 10.1049/iet-pel.2009.0272).
    16. 16)
      • 13. Lin, B.R., Dong, J.Y.: ‘Analysis and implementation of an active clamping zero-voltage turn-on switching/zero-current turn-off switching converter’, IET Power Electron., 2010, 3, (3), pp. 429–437 (doi: 10.1049/iet-pel.2009.0090).
    17. 17)
      • 12. Chen, S.J., Chang, H.C.: ‘Analysis and implementation of low-side active clamp forward converters with synchronous rectification’. The 33rd Annual Conf. of IEEE IECON, 2007, pp. 1506–1511.
    18. 18)
      • 8. Zhang, M.T., Jovanovic, M.M., Lee, F.C.: ‘Analysis and evaluation of interleaving techniques in forward converters’, IEEE Trans. Power Electron., 1998, 13, (4), pp. 690–698 (doi: 10.1109/63.704139).
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