Multiresonant-Frequency Filter for an Electrosurgery Inverter

Multiresonant-Frequency Filter for an Electrosurgery Inverter

This letter presents a multiresonant-frequency (MRF) filter for a high-frequency inverter (HFI) used in electrosurgery. The fundamental (sinusoidal) output frequency of the HFI is 390 kHz and is the same as the switching frequency of the HFI. The MRF is designed to extract the fundamental frequency...

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Veröffentlicht in:IEEE transactions on power electronics 2022-06, Vol.37 (6), p.6242-6246
Hauptverfasser: Bao, Congbo, Mazumder, Sudip K.
Format: Artikel
Sprache:eng
Schlagworte:
Control
electrosurgery
Feedback control
Frequency filters
GaN
Harmonic analysis
high-frequency inverter
Inverters
multiresonant-frequency filter
Power harmonic filters
Resonant frequencies
Switches
Switching frequency
Transformers
Voltage control
Waveforms
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Beschreibung
Zusammenfassung:This letter presents a multiresonant-frequency (MRF) filter for a high-frequency inverter (HFI) used in electrosurgery. The fundamental (sinusoidal) output frequency of the HFI is 390 kHz and is the same as the switching frequency of the HFI. The MRF is designed to extract the fundamental frequency of the tri-state bipolar waveform, generated by the HFI operating with phase-shift control. The structure and operation of the MRF are outlined. An experimental 300-W GaN-FET-based HFI prototype is developed to validate the feasibility of the proposed MRF under closed-loop control.
ISSN:0885-8993
1941-0107
1941-0107
DOI:10.1109/TPEL.2021.3137525