Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Fault Diagnosis of a Electrolytic Capacitor for Inverter DC-Link Voltage Smoothing
Authors Kwang-Woon Lee
Page pp.372-377
ISSN 1229-2214
Keywords Electrolytic capacitor; Bus capacitor; Equivalent series resistance (ESR); Fault diagnosis
Abstract Operating Characteristics of LLC Series resonant converter with a LLT(Inductor-Inductor-Transformer) transformer is presented. LLT transformer used to combine the inductor and transformer into one unit has the increased leakage inductance in the primary and secondary due to the winging method and the use of the gaped core. The increased leakage inductance in the primary and secondary of LLT transformer can be impacted on the DC voltage gain characteristics of LLC series resonant converter. In the paper, DC gain characteristics and the experimental results of the LLC series resonant converter with a LLT transformer are verified on the simulation based on the theoretical analysis and the 400W experimental prototype.