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Small-Signal Model and Closed-loop Control of a Cascade Reverse Double Γ-LC Power Resonant Converter

摘要：　　In this paper, a small-signal modeling technique based on the fundamental harmonic approximation is applied to a Cascade Reverse Double Γ-LC power resonant converter. The equivalent circuit of the small-signal model is drawn to analyze the frequency response. A feedback controller is constructed to ensure the gain margin and the phase margin of the system. Matlab simulation results are in good accordance with the theoretical analysis. Keyword：Four-element resonant converter, multi-element resonant converter, resonant converter, small-signal modeling, feedback control.

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