POWER FREQUENCY CURRENT CONVERTER AND METHOD FOR CONTROLLING THE SAME

摘要

The present disclosure provides a power frequency current converter, including: an input side (11) and an output side (12), wherein a current of the input side (11) or the output side (12) is a power frequency current; a switching device (13); and a controller (14), configured to control the switching device (13) to be turned on and turned off at an operating frequency, wherein within a half of a power frequency cycle, the controller (14) generates at least two fixed-frequency control signals and the operating frequency of the switching device (13) alters at least twice according to the at least two fixed-frequency control signals, so as to reduce junction temperature of the switching device (13).