The bidirectional active half-bridge converter (BAHB) is a versatile DC-DC topology enabling efficient energy transfer between sources like batteries, grids, and renewable systems. It employs dual half-bridge circuits coupled via a high-frequency transformer, providing galvanic isolation and bidirectional power flow control through phase-shift modulation and pulse-width modulation (PWM). Key advantages include reduced voltage stress on switches (handling half the input voltage), zero-voltage switching (ZVS) capabilities to minimize losses, and adaptive energy storage techniques to extend ZVS operability across load ranges. The paper presents the design and simulation of a bidirectional active half-bridge DC-DC converter for V2G applications. In the first stage, the topology is selected taking into account the minimum deviation of the output current, the size and weight of the output filter, the total output current harmonics deviations, and the minimum number of the component. In this sense, the modeling and simulation of the power converters is presented. Finally, the simulation results were obtained with the required performance in the operation of the power converter in both ways. The primary outcome of this research is the validation of the described design procedure, along with the refinement of design parameters to achieve higher efficiency.

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Design and Simulation of a Bidirectional Active Half-Bridge Dc-Dc Converter for V2G Applications

  • Raynel Díaz Santos,
  • Pablo Antonio Rodríguez Gutierrez,
  • Leonardo René Garcés Enriquez

摘要

The bidirectional active half-bridge converter (BAHB) is a versatile DC-DC topology enabling efficient energy transfer between sources like batteries, grids, and renewable systems. It employs dual half-bridge circuits coupled via a high-frequency transformer, providing galvanic isolation and bidirectional power flow control through phase-shift modulation and pulse-width modulation (PWM). Key advantages include reduced voltage stress on switches (handling half the input voltage), zero-voltage switching (ZVS) capabilities to minimize losses, and adaptive energy storage techniques to extend ZVS operability across load ranges. The paper presents the design and simulation of a bidirectional active half-bridge DC-DC converter for V2G applications. In the first stage, the topology is selected taking into account the minimum deviation of the output current, the size and weight of the output filter, the total output current harmonics deviations, and the minimum number of the component. In this sense, the modeling and simulation of the power converters is presented. Finally, the simulation results were obtained with the required performance in the operation of the power converter in both ways. The primary outcome of this research is the validation of the described design procedure, along with the refinement of design parameters to achieve higher efficiency.