Publisher : The Korean Institute of Electrical Engineers
DOI : 10.5370/KIEE.2016.65.1.81
Title & Authors
Analysis of A Fixed Frequency LCL-type DC-DC Converter Including the Effect of High-Frequency Transformer Park, Sangeun; Cha, Hanju;
An LCL-type Isolated dc-dc converter operating for constant output voltage is analyzed, including the effect of a high frequency transformer using ac complex circuit approximation. Its solution is derived and is used to obtain the characteristics of the proposed converter. The analyses show through converter modeling, phasor diagram and gain comparison that inclusion of a high frequency transformer results in introduction of magnetizing inductance and leakage inductances at conventional LCL dc-dc converter with ideal transformer. The theoretical and simulation results are presented in case of the wide variations in input voltage and load current in detail. Analysis and simulation results observed that introduction of a transformer in the dc-dc converter had considerable effect on the performance, especially in the case of low output voltage and large load.
LCL;DC-DC converter;High frequency transformer;
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