Feedforward Control of Current-fed Dual Active Half Bridge

Singh, A and John, V (2022) Feedforward Control of Current-fed Dual Active Half Bridge. In: 10th IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2022, 14 - 17 December 2022, Jaipur.

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Abstract

Current-fed DAHB has distinct advantages compared to traditional full-bridge and half-bridge bidirectional converters. However, controller design for such a converter becomes complicated when features like bidirectional power flow, substantial stability margins across the whole working range, and excellent disturbance rejection are required. This paper discusses the design and implementation of a feed-forward controller working with a conventional PI controller for enhanced load disturbance and supply disturbance rejection. The conservative design of the PI controller ensures sufficient stability margins for the entire load range, and the feedforward controller provides tight regulations on the output voltage in the event of a load or supply voltage transient. A duty cycle modulator establishes the optimal operating point for the converter, minimizing transformer RMS current and therefore increasing efficiency. The proposed method is validated using simulations and hardware experiments on a scaled-down model of the converter. © 2022 IEEE.

Item Type:	Conference Paper
Publication:	10th IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2022
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords:	Constrained optimization; Controllers; DC-DC converters; Electric load flow; Feedforward control; Power electronics; Power quality, Constrained minimization; Current fed; Dc/dc converters; Dual active half-bridge; Feed-forward controllers; Full bridge; Half-bridge; Half-bridge bidirectional; Load current feed-forward; Stability margins, Disturbance rejection
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	17 May 2023 09:41
Last Modified:	17 May 2023 09:41
URI:	https://eprints.iisc.ac.in/id/eprint/81621

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