Method for controlling uniform heating of switch device of switch power source
A switching device and switching power supply technology, which is applied in the direction of electrical components, control/regulation systems, instruments, etc., can solve the problem of uneven heating of switching devices, and achieve the effect of prolonging life and uniform heating
Inactive Publication Date: 2015-05-06
SICHUAN INJET ELECTRIC CO LTD +1
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The invention relates to the field of switch power source control, in particular to a method for controlling uniform heating of switch devices of a switch power source. The switch power source comprises a full bridge converter, the switch devices in the full bridge converter are switch tubes, the sequence of the switch devices in the full bridge converter alternately changes periodically, and the alternating period is N times of the switch control period of the switch devices, wherein N refers to a natural number larger than 2. Alternate soft turnoff of the switch devices is realized by alternately changing turnoff sequence of the switch devices composed of the switch tubes of the full bridge converter in the switch power source, so that the switch devices are uniform in heating within a long time period, and service life of the whole switch power source is prolonged.
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