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Lifetime is an important performance factor in the reliable operation of power converters. However, the state-of-the-art LC filter design of a buck dc–dc converter is limited to the specifications of voltage and current ripples and constrains in power density and cost without reliability considerations. This paper proposes a method to optimize the design of the LC filters from a reliability perspective,...
In power electronics converters, the insulated gate bipolar transistors (IGBTs) are easy to fail during possible large disturbance on the source or load side. This paper redefines the safety operating area (SOA) by proposing a relationship between the junction temperature rising time and the disturbing current on the device. An improved temperature-dependent Cauer-type thermal model is used to uncover...
Reliability-oriented design has been proved to be a kind of effective design methodology for power electronic equipment. This paper proposes a design method to obtain the value of inductance and capacitance sets that obtain high capability, power density, high reliability of an LC filter in buck converters through a multi-objective optimization way. The cutoff frequency, lifetime of capacitor and...
In order to work out an exact value of the EPON(Ethernet Passive Optical Network) reliability in the smart distribution grid communication system, this paper proposed a method from both the micro and macro perspectives to calculate the failure rate and the reliability in smart distribution grid. On the micro, the reliability of optical devices in OLT(Optical Line Terminal) and ONU(Optical Network...
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