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2000
Volume 18, Issue 8
  • ISSN: 2352-0965
  • E-ISSN: 2352-0973

Abstract

Background

The extensive utilization of the dual active bridge (DAB) topology in the domain of power electronics has led to the prevalence of DC/AC converters based on DAB that adopt two-stage conversion and phase-shifting control strategies in their design. This has resulted in an increase in losses and complexity in practice.

Objective

The objective of this study is to propose a parameter optimization method for a single-stage isolated bidirectional DC/AC converter, utilizing a hybrid control method of variable frequency and phase shift control to enhance the efficiency of the converter.

Methods

The use of a single-stage topology eliminates the DC link composed of decoupling capacitors in the middle. Subsequently, the equal power method was employed to facilitate frequency conversion and phase shift control. Furthermore, the LC parameters of the converter were optimized based on the multi-objective ant lion optimizer.

Results

A simulation model was constructed based on a single-stage grid-connected system. In comparison to the multi-objective particle swarm optimization algorithm and the multi-objective sparrow algorithm, the LC parameters optimized by the multi-objective ant lion algorithm demonstrated a reduction in the THD of grid-connected current by 27% and 66%, respectively. The optimized parameters result in a reduction in the harmonic distortion rate of the grid-connected current to 1.3% and an improvement in efficiency to 90%.

Conclusion

The simulation results have demonstrated the efficacy and precision of the parameter optimization strategy, and the proposed optimization strategy has the potential to enhance the performance of grid-connected systems.

© 2025 Bentham Science Publishers
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2024-09-03
2025-11-15

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Parameter Optimization of Single-Stage Isolated Bidirectional DC/AC Converters based on Ant Lion Optimizer
Recent Advances in Electrical & Electronic Engineering 18, 1362 (2025); https://doi.org/10.2174/0123520965319127240826073419
/content/journals/raeeng/10.2174/0123520965319127240826073419
/content/journals/raeeng/10.2174/0123520965319127240826073419
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  • Article Type:     Research Article
Keyword(s): ant lion optimizer; dual active bridge; parameter optimization; phase shift control; Single stage DC/AC converter; variable frequency

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