access icon free Asymmetrical hybrid-controlled half-bridge LCC resonant converter with low conduction loss and wide ZVS operation range

An asymmetrical hybrid-controlled half-bridge LCC resonant converter which integrated a buck–boost converter and a half-bridge LCC resonant converter is proposed. It benefits with wide soft switching range, low conduction loss and high power density. By utilising an asymmetrical hybrid control strategy, its switching frequency and duty ratio can be adjusted simultaneously. The proposed LCC resonant converter maintains output voltage regulation and zero-voltage switching of switches in wide input voltage and load variation range. Experiment results of a 500 W prototype are provided to verify the theoretical analysis results.

Inspec keywords: continuous systems; voltage control; zero voltage switching; resonant power convertors; discrete systems

Other keywords: power 500 W; half-bridge LCC resonant converter; wide ZVS operation range; buck–boost converter; switching frequency; asymmetrical hybrid-controlled half-bridge LCC resonant converter; power density; soft switching range; low conduction loss; zero-voltage switching; duty ratio; output voltage regulation

Subjects: Power electronics, supply and supervisory circuits; Power convertors and power supplies to apparatus

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http://iet.metastore.ingenta.com/content/journals/10.1049/el.2017.2659
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