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Voltage Source Series Inverter with Transformer Coupled Load
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| Author(s) |
J. Fabianowski; R. Ibach; G. Gierse |
| Abstract |
The load of series resonant inverters for inductive heating at high working frequencies is preferably connected via a matching transformer. Asymmetries in inverter design and control cause voltage asymmetries in the inverter output voltage which can result in transformer core saturation. A possibility is shown by monitoring the inverter output current to generate a correcting signal for influencing the inverter control to avoid transformer core saturation. Furthermore, it is demonstrated how the inverter can be started without the aid of additional equipment by selectively bringing the transformer to a certain remanence point. Oscillograms recorded from industrial 400 kW/10 kHz inverters show that these methods achieved faultless operation. |
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| Filename: | Unnamed file |
| Filesize: | 2.433 MB |
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| Type |
Members Only |
| Date |
Last modified 2019-08-01 by System |
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