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The power conversion system (PCS) converter is a critical component for power transmission, which is used to combine energy storage batteries and the grid. Two-Stage Isolated PCS which using dual active bridge (DAB) as the front stage and three phase inverter as the back stage is widely used for it can realize high frequency isolation and adjustable DC bus voltage. The key issues of the PCS converter design are safety, cost and efficiency. To address them, this paper designed a cost-effective and efficient two-stage isolated PCS structure by analyzing of device conduction losses and optimizing the hardware circuit structure. Both two-level (2L) and three-level (3L) bridge structure are taking in consideration for there are three independent arms. The comparison proved 2L has the best performance.

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Evaluation of the Two-Stage Isolated PCS Based on Minimized Conduction Losses

  • 会议论文

  • 发表日期：

    2025年

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  • Jingru Zhang,
  • Yongqing Wei,
  • Qingxin Guan

摘要

The power conversion system (PCS) converter is a critical component for power transmission, which is used to combine energy storage batteries and the grid. Two-Stage Isolated PCS which using dual active bridge (DAB) as the front stage and three phase inverter as the back stage is widely used for it can realize high frequency isolation and adjustable DC bus voltage. The key issues of the PCS converter design are safety, cost and efficiency. To address them, this paper designed a cost-effective and efficient two-stage isolated PCS structure by analyzing of device conduction losses and optimizing the hardware circuit structure. Both two-level (2L) and three-level (3L) bridge structure are taking in consideration for there are three independent arms. The comparison proved 2L has the best performance.