This paper proposes a simple, efficient soft-switching method for power switching converters. Soft switching of the DC/AC H-Bridge converter is realized by paralleling two auxiliary switches and a magnetic amplifier with the load. The auxiliary switches are turned on at a predetermined time before the commutation of the main switches. The magnetic amplifier then automatically determines the necessary amount of redirection current to ensure soft switching of all switches under any load conditions. This method requires no expensive sensors or complex control circuitry. It is ideal for class-D audio power amplifiers where the load current is widely changing. Further applications include DC/DC converters, motor drivers, UPS, communication, and space applications where high efficiency, low EMI and small size are crucial.
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机译：本文提出了一种简单，有效的电源开关转换器软开关方法。通过将两个辅助开关和一个磁放大器与负载并联，可以实现DC / AC H桥转换器的软开关。辅助开关在主开关换向之前的预定时间接通。然后，磁放大器自动确定必要的重定向电流量，以确保在任何负载条件下所有开关的软切换。这种方法不需要昂贵的传感器或复杂的控制电路。它是负载电流变化很大的D类音频功率放大器的理想选择。其他应用包括DC / DC转换器，电动机驱动器，UPS，通信和空间应用，在这些应用中，高效率，低EMI和小尺寸至关重要。
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