Capacitor Diode Clamped LLC Resonant Converter for Current Limiting Harmonic Approximation
|International Journal of Engineering Trends and Technology (IJETT)||
|© 2016 by IJETT Journal|
|Year of Publication : 2016|
|Authors : Pauline anita.A, Monica Vijayakumar, Padmanabhan.B
|DOI : 10.14445/22315381/IJETT-V33P239|
Pauline anita.A, Monica Vijayakumar, Padmanabhan.B"Capacitor Diode Clamped LLC Resonant Converter for Current Limiting Harmonic Approximation", International Journal of Engineering Trends and Technology (IJETT), V33(4),200-204 March 2016. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group
In this paper, the analysis and design of LLC resonant converters with capacitor – diode clamp current limiting harmonic approximation is being presented. Moreover, here the resonant capacitor of an LLC converter is split into clamped and non clamped portions. The fundamental harmonic approximation (FHA) based equivalent circuit model, is derived for the converter to accurate the current limiting characteristic under overloading condition. Here the two diodes are replaced by capacitors to obtain smoothened output. From this we get advantages like high gain, less output ripple and minimum conduction loss. The converter voltage-gain and voltage current characteristics under different overload condition and operating frequencies are predicted using proposed model.
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llc,dc-dc converter,capacitor –diode clamp.