Abstract

Power electronics and conversion technology are exciting and challenging professions for anyone who has a genuine interest in and aptitude for, applied science and mathematics. The existing knowledge in power electronics is not completed. All switching power circuits including the power DC/DC converters and switched DC/AC pulse-width-modulation (PWM) inverters—direct current [DC] and alternative current [AC]—perform in high-frequency switching state. Traditional knowledge did not fully consider the pumping-filtering process, resonant process, and voltage-lift operation. Therefore, the existing knowledge cannot well describe the characteristics of switching power circuits, including the power DC/DC converters. Power Electronics and conversion technology are concerned with systems that produce, transmit, control, and measure electric power and energy. High-frequency switching equipment can convert high power, and its power density is proportional to the applying frequency.

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