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This paper describes the configurations of semiconductor circuit breakers we developed for higher-voltage direct-current (HVDC) power feeding systems. Semiconductor breakers have some merits. The shutdown parts of the breakers are compact and can be controlled remotely. In addition, they do not need to be replaced after shutting down a short circuit. When semiconductor breaker shutdown overcurrent...
This paper presents a new auto-tuning method for the wide input voltage range digital control buck-boost dc-dc converter. This buck-boost dc-dc converter is used with wide input voltage and a suitable proportional gain and bias value are changing against the input voltage of the converter. The gain and bias value are changed suitably in real time with digital control. As simulation results, it is...
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