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SINGLE-ENDED 1 MHZ QUASI-RESONANT HIGH-FREQUENCY INVERTER USING NEWLY-DEVELOPED STATIC INDUCTION TRANSISTOR
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| Author(s) |
H. Ogiwara; M. Nakaoka |
| Abstract |
This paper describes a quasi-voltage resonance type high frequency inverter operating at 1 MHz zero-voltage switching (ZVS) using the specially designed HIGH-FREQUENCY Static Induction Transistor (HF-SIT) developed recently. The quasi-resonant inverter topology is theoretically expected to minimize the switching losses and stresses of a single switching power device (HF-SIT). However, this switching mode inverter inherently includes the major disadvantage that the peak voltage responsibility across the switching device becomes extremely severe. In order to overcome the disadvantage, a quasi-resonant ZVS topology using two cascaded HF-SITs is demonstrated. Thereby high output power could be obtained by this circuit construction. The trially-produced quasi-resonant ZVS inverter with current-regenerative type is presented and discussed on the hardware technology on 1 MHz power supply for induction-heating of metal rods and pieces. This simple inverter with high frequency link is found to work safely and stable in the frequency range of several MHz. The breadboard with sufficiently high power conversion efficiency is proved experimentally. |
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| Filename: | Unnamed file |
| Filesize: | 756.3 KB |
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| Type |
Members Only |
| Date |
Last modified 2021-02-10 by System |
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