A New Method Of Operation For A Series Resonant Converter, With Intended Application In Megawatt High-voltage DC Wind Turbines. Compared To A Frequency Controlled Series Resonant Converter Operated In Sub Resonant Mode, The Method (entitled Pulse Removal Technique) Allows The Design Of The Medium Frequency Transformer For Highest Switching Frequency, While Being Operated At Lower Frequency Without Saturation. The Main Focus Of This Method Is To Identify And Analyze The Operating Modes Of The Converter With Pulse Removal Technique. With The Use Of Variable Frequency And Variable Phase Displacement In Sub Resonant Mode, The New Method Of Operation Promises Transformer Size Reduction And Facilitates Soft-switching Transition Of The IGBTs And Line Frequency Diodes On Rectifier Side. Four Modes Of Operation Are Identified, While Equations For Output Power, Voltage And Current Stress Are Identified. In Order To Control Output Power And Increase Efficiency, Frequency Control In Sub Resonant Is Identified As An Optimal Control Method For High Power Resonant Topologies. But The Drawback Is That The Transformer Needs To Be Designed For Lowest Operating Point. In Order To Solve This Issue, A New Method Of Operation, Entitled Pulse Removal Is Introduced.

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