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AN MCT BASED INDUSTRIAL INDUCTION COOKER CIRCUIT USING ZERO CURRENT SWITCHING
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| Author(s) |
P.R. Palmer; A.N. Githiari |
| Abstract |
In this paper the MCT is compared to the IGBT and conventional fast thyristor with reference to the load resonant application of industrial induction cooker hobs. Such loads may be operated in series or parallel resonance and this provides for a choice of circuit to be made depending on the switching device type. The design of the MCT circuit is considered in detail and SPICE simulations are given. Experimental results for a 6kW (peak), 25kHz prototype circuit are presented. By taking advantage of the MCT ratings, an overall efficiency of over 90% is achieved. The key features of the MCT in ZCS circuits are their low on-state voltage and their high dv/dt rating. The MCT circuit is shown to be more efficient and cost effective than the IGBT circuit for this application. |
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| Filename: | Unnamed file |
| Filesize: | 498 KB |
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| Type |
Members Only |
| Date |
Last modified 2018-05-17 by System |
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