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首页> 外文期刊>IEEE Transactions on Power Electronics >Single-stage single-switch power-factor-correction AC/DC converterswith DC-bus voltage feedback for universal line applications
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Single-stage single-switch power-factor-correction AC/DC converterswith DC-bus voltage feedback for universal line applications

机译:具有通用总线应用的DC总线电压反馈的单级单开关功率因数校正AC / DC转换器

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Single-stage single-switch power-factor-correctionn(S4-PFC) AC/DC converters with DC-bus voltage feedback arenproposed. The DC-bus voltage stress at light load for thenS4-PFC converter is first analyzed. The DC-bus voltagennegative feedback concept in the power stage to suppress the DC-busnvoltage stress is then proposed. Design considerations of total harmonicndistortion (THD), power factor (PF), DC-bus voltage stress, and thenboost inductor are discussed. A S4-PFC converter is analyzednand implemented with 5 V 12 A output as an example. It is shown that thenDC-bus voltage is limited within 405 V from no load to full load, andnthe measured line input-current harmonics satisfy the IEC 1000-3-2 ClassnD requirements with universal line input. The measured efficiency and PFnare about 71% and 0.93, respectively. The experimental results show thatnusing the DC-bus voltage feedback to reduce the DC-bus voltage isneffective
机译:提出了具有直流母线电压反馈的单级单开关功率因数校正(S4-PFC)AC / DC转换器。首先分析了S4-PFC转换器在轻负载下的DC总线电压应力。然后提出了功率级的直流母线电压负反馈概念,以抑制直流母线电压应力。讨论了总谐波失真(THD),功率因数(PF),DC总线电压应力以及升压电感器的设计注意事项。以5 V 12 A输出为例,对S4-PFC转换器进行了分析和实现。结果表明,DC总线电压从空载到满载被限制在405 V之内,并且所测得的线路输入电流谐波满足IEC 1000-3-2 ClassD的通用线路输入要求。测得的效率和PFna分别约为71%和0.93。实验结果表明,利用直流母线电压反馈降低直流母线电压是无效的。

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