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a new high-efficiency regulation method for a zero-current and zero-voltage current-fed pushpull converter is presented. The method proposed is based on the use of a controlled transformer as a postregulator, which adds or subtracts an additional voltage to the output filter of the converter. An auxiliary regulator, which only handles a percentage of the output power, controls this transformer, and therefore, results in much higher efficiency than a normal preregulator would have. The noveltydoi:10.9790/3021-021212833 fatcat:sa5enpbg3zcxpmomgmwf4vfjwq