Latest electromagnetic induction-based fluid-heating appliance using voltage-source series loaded-resonant pulse-width modulation high-frequency inverter

This paper presents a prototype of a new concept of electromagnetic inducti on-based fluid heating appliance using a voltage-source type series capacit or-compensated load-resonant high-frequency inverter using IGBT modules, wh ich incorporates a phase-shifted pulse-width modulation (PWM) power regulat ion scheme. Proposed are also the load-resonant and quasi-resonant hybrid c ircuit topology of the voltage-fed soft-switching PWM inverter with inducti ve and capacitive hybrid lossless snubbers. In addition, some new types of electromagnetic induction heater to produce hot water, hot dry air and high -temperature superheated steam vapour are demonstrated. The feasible applia nce employing the inverter mentioned above for electromagnetic induction-ba sed liquid heating or gas heating is implemented from a practical point of view, along with the steady-state operating principle of this inverter syst em in addition to its remarkable features. The steady-state and dynamic-sta te operating characteristics of this high-frequency power electronic applia nce are illustrated and evaluated on the basis of computer-aided simulation results and experimental results tested by a 10 kW breadboard set-up which is actually produced for a low-fluid-pressure induction-heated boiler incl uding an induction-heated hot water supplier and induction-heated high-temp erature steamer and gas producer. Furthermore, this promising cost-effectiv e inverter-fed heat exchanger employing electromagnetic induction-based flu id heating in various pipeline systems is introduced as an induction-heated evaporator and an electromagnetic induction superheated steamer in compari son with a conventional heat exchanger using a sheathed heater, together wi th induction-heated metal catalyst heating for exhaust gas cleaning in a di esel engine-driven system.