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A commutation strategy for IGBT-based CSI-fed parallel resonant circuit for induction heating application

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Abstract

A brief study on a commutation strategy for a current source inverter (CSI)-fed parallel resonant circuit, using switches formed by IGBTs with series diodes, is presented in this paper. The dynamic behaviour of the inverter and different strategies for its reliable operation are discussed here considering parasitic inductance and overlap time between CSI switching devices. The dynamic behaviour of the switches decides the upper frequency limit for the application. IGBTs with the series diodes behave as uni-directional current switches with bi-directional voltage blocking capability. This feature should be taken into account to decide on an appropriate switching strategy for this converter configuration.

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Acknowledgements

The authors wish to thank M/S EMT Megatherm Pvt. Ltd., Kolkata, for the technical support in making the induction heating coils. The support and encouragement received from Late Prof. Ajit K Chattopadhyay, Emeritus Professor, Department of Electrical Engineering, IIEST, Shibpur, is gratefully acknowledged. The authors also acknowledge the support received from the authorities of IIEST, Shibpur, Howrah, and particularly from research colleagues at the Advanced Power Electronics Laboratory, Department of Electrical Engineering, towards this work.

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  1. Department of Electrical Engineering, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, 711103, India

    MOLAY ROY & MAINAK SENGUPTA

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  1. MOLAY ROY
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  2. MAINAK SENGUPTA
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Correspondence to MOLAY ROY.

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ROY, M., SENGUPTA, M. A commutation strategy for IGBT-based CSI-fed parallel resonant circuit for induction heating application. Sādhanā 42, 153–161 (2017). https://doi.org/10.1007/s12046-016-0587-3

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  • DOI: https://doi.org/10.1007/s12046-016-0587-3

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