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OPERATION AND CONTROL REQUIREMENTS FOR A GTO USED IN A PARALLEL RESONANT INVERTER FOR INDUCTION HEATING
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| Author(s) |
A. Mertens; H.-Ch. Sudelny |
| Abstract |
While the GTO has been used in PWM inverter drives for several years, its application in medium frequency induction heating inverters has gained interest only recently. The use of turn-off devices in parallel resonant inverters offers some appreciable benefits over conventional thyristors. This paper presents an investigation of the switching behaviour of GTOs in this circuit. Experimental results are obtained in a test circuit, where both turn-on and
turn-off of the devices can be observed. The influence of different methods of current commutation on turn-on and turn-off losses is discussed, and an optimum mode of operation is proposed. The requirements to the control of the inverter are derived, and an adequate control system is outlined. First
experimental results obtained in a GTO inverter are presented. |
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| Filename: | Unnamed file |
| Filesize: | 633.2 KB |
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| Type |
Members Only |
| Date |
Last modified 2021-02-22 by System |
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