Abstract
Many studies of the ac power supply have been reported. There are ac chopper circuits in these reports. The ac chopper circuits are effective method for ac power control. But, the ac chopper does not apply to practical use because it has some problems that needs bi-directional switch and ac snubber.In this paper, I propose the novel PWM controlled ac power supply based on ac chopper technology. Proposed PWM controlled ac power supply can solve problems of devices and snubber circuits because this circuit uses bilateral switch circuit instead of bi-directional switch. This paper describes circuit configuration and operation of PWM controlled ac power supply, and explains ac voltage regulator and series voltage compensator for application example through experimental results.
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