Scholarlink

<p>The switch-linear hybrid (SLH) configuration, by integrating the advantages of a linear power amplifier (LPA) and a switching mode power amplifier, achieves both high dynamic response and superior power efficiency. Thus, it has attracted a great deal of research attention. However, when operating under non-resistive or active load conditions that are typical of applications like electronic loads and power hardware-in-the-loop (PHIL) testing, the conventional series-form SLH current-source power supply exhibits additional conduction loss in its linear power amplifier (LPA) stage. This extra loss deteriorates the system efficiency. To address this, this paper provides a detailed analysis of the generation mechanism for the additional conduction loss of the LPA and proposes a SLH current source based on the full-bridge converter. The bipolar output capability of the full-bridge converter enables a full load voltage envelope and provides an absorption path for reverse power, eliminating the additional loss in the LPA. Finally, a series-form SLH current source with a -4.5 to + 4.5&#xa0;A sinusoidal output current and a 60&#xa0;W peak output power was built. The experimental results show that, when compared with the conventional series-form SLH current source, the proposed topology effectively reduces the conduction loss of the LPA under various typical load conditions.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Full-bridge-converter-based bidirectional switch-linear hybrid current source

  • 期刊论文

  • 发表日期：

    2026年1月5日

查看全文
  • Jichen Huang,
  • Qingwei Zeng,
  • Lei Shen,
  • Lijun Hang,
  • Chengguo Qian

摘要

The switch-linear hybrid (SLH) configuration, by integrating the advantages of a linear power amplifier (LPA) and a switching mode power amplifier, achieves both high dynamic response and superior power efficiency. Thus, it has attracted a great deal of research attention. However, when operating under non-resistive or active load conditions that are typical of applications like electronic loads and power hardware-in-the-loop (PHIL) testing, the conventional series-form SLH current-source power supply exhibits additional conduction loss in its linear power amplifier (LPA) stage. This extra loss deteriorates the system efficiency. To address this, this paper provides a detailed analysis of the generation mechanism for the additional conduction loss of the LPA and proposes a SLH current source based on the full-bridge converter. The bipolar output capability of the full-bridge converter enables a full load voltage envelope and provides an absorption path for reverse power, eliminating the additional loss in the LPA. Finally, a series-form SLH current source with a -4.5 to + 4.5 A sinusoidal output current and a 60 W peak output power was built. The experimental results show that, when compared with the conventional series-form SLH current source, the proposed topology effectively reduces the conduction loss of the LPA under various typical load conditions.