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This paper proposes a single-stage high-power-factor asymmetrical half-bridge AC-DC converter for power factor correction. The proposed converter is developed by integrating an asymmetrical half-bridge DC-DC converter with a set of coupled inductors and a blocking diode to achieve the single-stage AC-DC conversion with the buck-boost type power factor correction. By using the coupled inductors, the...
The objective of this paper is to propose a modularized bi-directional grid-tied inverter (BGI) with asynchronous sigma-delta modulation (ASDM) control for the renewable energy (RE)-supplied DC power system. The proposed BGI can be operated either in the grid-tied mode (GTM) or the power factor correction mode (PFCM) which is necessary features for the RE-supplied DC power system. The proposed BGI...
The objective of this paper is to propose a bidirectional grid-tied inverter (BGI) with predictive current control (PCC). The proposed BGI can be operated either in the grid connection mode (GCM) or the power factor correction mode (PFCM) which are necessary features for the renewable energy supplied DC power system. For the proposed PCC, the duty ratio for the power switch in BGI is determined by...
Interleaving control schemes are widely used in converter applications. Merits of such control methods are in reducing input/output current or voltage ripples and volume, and increasing the processed power capacity of converters. For converters with constant frequency operation, it is easy to achieve interleaving control. However, it is difficult to realize interleaving features with variable frequency...
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