A new soft-switching technique that improves performance of the high-power-factor boost rectifier by reducing switching losses is introduced. The losses are reduced by an active snubber which consists of an inductor, capacitor, rectifier, and anauxiliary switch. Since the boost switch turns off with zero current, this technique is well suited for implementations with insulated-gate bipolar transistors. The reverse-recovery-related losses of the rectifier are also reduced by the snubber inductorwhich is connected in series with the boost switch and the boost rectifier. In addition, the auxiliary switch operates with zero-voltage switching. A complete design procedure and extensive performance evaluation of the proposed active snubber using a 1.2-kW prototype operating from a 90 V{sub}(rms)-265 V{sub}(rms) input are also presented.
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机译：介绍了一种通过降低开关损耗来提高高功率因数升压整流器的性能的新软交换技术。由电感器，电容器，整流器和Anauxiliary开关组成的有源缓冲器减少了损耗。由于升压开关以零电流关闭，因此该技术非常适用于具有绝缘栅双极晶体管的实现。通过串联与升压开关和升压整流器串联连接的整流器的反恢复相关损耗也减小了整流器。此外，辅助开关采用零电压切换工作。还呈现了使用从90 V {sub}（RMS）-265 {sub}（RMS）输入的1.2-kW原型的所提出的主动缓冲器对所提出的主动缓冲器的完整设计程序和大量性能评估。
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