This article provides a comprehensive analysis, including static, dynamic, and experimental validation, of a voltage-doubler Ćuk rectifier operating in the discontinuous conduction mode (DCM) for single-phase applications. The proposed topology integrates two classic Ćuk rectifiers through a three-position switch, allowing for either a doubled output voltage or reduced voltage efforts compared to the conventional topology. The voltage gain is increased while maintaining the step-up/step-down characteristic of the Ćuk family, and power components are activated only in a half cycle of the electrical grid, thus reducing the current efforts in the semiconductors. These features make the Ćuk converter suitable for higher voltage applications. The proposed topology is analyzed in DCM, where a high power factor is naturally achieved without a current control loop. An experimental prototype of 1 kW is built to verify the theoretical analysis, and the results show an efficiency of 94.68% with an input current total harmonic distortion of 1.86% at a rated power, including an output voltage control loop. Furthermore, the proposed topology is compared to the conventional Ćuk rectifier, both operating in DCM and with power factor correction.

中文翻译：

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在断续导通模式下工作的单相倍压器高功率因数 Ćuk 整流器

本文对单相应用中在不连续导通模式 (DCM) 下运行的倍压器 Ćuk 整流器进行了全面分析，包括静态、动态和实验验证。所提出的拓扑通过一个三位置开关集成了两个经典的 Ćuk 整流器，与传统拓扑相比，可以实现双倍的输出电压或减少电压工作。在保持Ćuk系列的升压/降压特性的同时增加了电压增益，并且功率组件仅在电网的半个周期内激活，从而减少了半导体中的电流消耗。这些特性使 Ćuk 转换器适合更高电压的应用。所提出的拓扑结构在 DCM 中进行了分析，无需电流控制环路即可自然实现高功率因数。搭建了1 kW的实验样机来验证理论分析，结果表明，在额定功率下，包括输出电压控制环路，效率为94.68%，输入电流总谐波失真为1.86%。此外，将所提出的拓扑与传统的 Ćuk 整流器进行了比较，两者都在 DCM 下运行并具有功率因数校正。