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Adaptive Resonant-Valley Switching for a GaN HEMT Direct AC-AC Auxiliary Resonant Commutated Pole Converter
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| Author(s) |
Kyle STEYN |
| Abstract |
Zero-voltage zero-current switching is not guaranteed with auxiliary resonant commutated pole (ARCP) based topologies. The optimal dead-time is dependant on various parameters and cannot easily be calculated in real-time. A control technique that ensures all phase-arm switches turn on during the first resonant valley is presented. The voltage across one phase-arm switch is sampled during a turn-on transition and stored. The samples are processed by an adaptive zero-crossing algorithm and the optimal dead-time for the next switching cycle is predicted. The proposed technique was validated during a load transient and at steady-state in simulation and experimentally on a 5-kW direct ac-ac ARCP prototype. |
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| Filename: | 0442-epe2022-full-17394728.pdf |
| Filesize: | 1.405 MB |
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| Type |
Members Only |
| Date |
Last modified 2023-09-24 by System |
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