Hybrid three-level PWM and resonant converter

Hybrid three-level PWM and resonant converter

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A hybrid soft-switching converter including two resonant circuits and an un-regulated dc–dc pulse-width modulation (PWM) circuit is presented. Two split capacitors with four active switches are used at primary side to limit power switches at V in/2. The variable frequency operation is adopted to regulate output voltage. Two flying capacitors are also adopted at the primary side to automatically balance two input split voltages. One un-regulated PWM converter shared the same power switches of two resonant circuits is used to reduce the output current ripple. Therefore, the power rating of power semiconductors and passive components are reduced. The operation principles, performance and effectiveness are illustrated and verified on a 1.44 kW (48 V/30 A) prototype circuit.


    1. 1)
      • 1. Ghodke, A.A., Chatterjee, K.: ‘Three-phase three-level one cycle controlled bidirectional ac-dc neutral-point-clmaped converter without having voltage sensors’, Power Electron., 2014, 7, (8), pp. 21612172.
    2. 2)
      • 2. Lin, B.-R., Chen, J.-Y.: ‘Interleaved resonant converter with the balanced flying capacitors’, Power Electron., 2015, 8, (3), pp. 447457.
    3. 3)
    4. 4)
      • 4. Jin, K., Ruan, X.: ‘Hybrid full-bridge three-level LLC resonant converter – a novel dc-dc converter suitable for fuel-cell power system’, Trans. Ind. Electron., 2006, 53, (5), pp. 790799.

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