EPE-PEMC 2000 - Topic 05b: Inductive Heating and Welding | ||
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2000 - Conference > EPE-PEMC 2000 - Topic 05: Applications of Power Electronic Systems > EPE-PEMC 2000 - Topic 05b: Inductive Heating and Welding | ||
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![]() | Behaviour of Arc Welder with High Frequency LCC Resonant Converter
By Dzurko P., Dudrík J., Višnyi P. | |
Abstract: The paper presents the theoretical and practical aspects of the design and constructions of a high-frequency full-bridge series-parallel load resonant converter for arc welding. The converter with maximum output current of 150A and an output no-load voltage of 70V operating at frequency from 65kHz to 100kHz is designed. Soft switching for all power switches is achieved by using the non-dissipative snubbers. This converter minimises the size and weight of the magnetic components in the converter, reduces output current ripple and switching losses in semiconductor devices.
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![]() | Improved Quasi Resonant ZVS-PWM Inverter with Active Voltage-Clamped Capacitor for Consumer Induction Heating
By Hirota I.*, Omori H.*, Terai H.*, Muraoka S., Hishikawa S., Hiraki E., Abdullah All M., Nakaoka M. | |
Abstract: This paper describes an advanced prototype of voltage-fed zero voltage soft-switching PWM resonant inverter with an active voltage clamped capacitor, which is put into practice for high-frequency high-power induction-heated appliances used in the field of consumer power electronics. This application-specific quasi-resonant inverter using the latest generation IGBTs for soft-switching can regulate its output power under a principle of a fixed frequency ZVS-PWM strategy. Its operating principle and unique features are presented as compared with a conventional quasi-resonant ZVS-PFM inverter, together with its power regulation characteristics on the basis of its computer-aided simulation and experimental results. The steady-state performances of this inverter developed for two-burner type induction-heated food cooking appliance, induction heated steamer induction-heated boiler, and induction-heated fryer are discussed, induction heated steamer and evaluated from a practical point of view.
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