Soft Switching Analysis in Dc-dc Boost Converters
نویسندگان
چکیده
The boost topology is the most popular topology used in power factor correction circuits. The efficiency and performance of the boost converter depends on the switching frequency affecting the switching losses. At high frequency operations the switching losses of the converter is considerable and decreases the efficiency of the converter. To remove this problem the converter is designed to operate at soft switching mode operation. Soft switching mode operation also removes the problem of EMI which is a result of high frequency operation operating at hard switching. In this study, there are given five different topologies of DC-DC boost converters operating at soft switching. The hard switching operation of the corresponding converters are also given for the same load and operating conditions and the effect of the soft switching in increasing the efficiency of the converter is investigated. The given converters are analyzed and their efficiencies are compared. Auxiliary switches are also used in most soft switching DC-DC boost converter. Though these switches make the converter design a rather complicate they have considerable effects on the performance of boost converters.
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