This paper presents a prototype of a new concept of electromagnetic inductionbased fluid heating appliance using a voltage-source type series capacitorcompensated load-resonant high-frequency inverter using IGBT modules, which incorporates a phase-shifted pulse-width modulation (PWM) power regulation scheme. Proposed are also the load-resonant and quasi-resonant hybrid circuit topology of the voltage-fed soft-switching PWM inverter with inductive and capacitive hybrid lossless snubbers. In addition, some new types of electromagnetic induction heater to produce hot water, hot dry air and hightemperature superheated steam vapour are demonstrated. The feasible appliance employing the inverter mentioned above for electromagnetic induction-based liquid heating or gas heating is implemented from a practical point of view, along with the steady-state operating principle of this inverter system in addition to its remarkable features. The steady-state and dynamic-state operating characteristics of this high-frequency power electronic appliance are illustrated and evaluated on the basis of computer-aided simulation results and experimental results tested by a 10kW breadboard set-up which is actually produced for a low-fluid-pressure induction-heated boiler including an induction-heated hot water supplier and induction-heated high-temperature steamer and gas producer. Furthermore, this promising cost-effective inverter-fed heat exchanger employing electromagnetic induction-based fluid heating in various pipeline systems is introduced as an induction-heated evaporator and an electromagnetic induction superheated steamer in comparison with a conventional heat exchanger using a sheathed heater, together with induction-heated metal catalyst heating for exhaust gas cleaning in a diesel engine-driven system.
ASJC Scopus subject areas
- Electrical and Electronic Engineering