Compact and Highly Efficient 2.5MHz SiC Electronic Ballast for Inductively Coupled UV Lamps
Conference: PCIM Europe digital days 2020 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
07/07/2020 - 07/08/2020 at Deutschland
Proceedings: PCIM Europe digital days 2020
Pages: 7Language: englishTyp: PDF
Authors:
Simon, Christoph; Eizaguirre, Santiago; Kling, Rainer (Karlsruhe Institute of Technology, Germany)
Denk, Fabian (Ushio Deutschland GmbH, Germany)
Abstract:
Inductively coupled UV lamps require a high-frequency alternating current for ignition and efficient operation. In this work, we present a switch-mode half-bridge inverter, with SiC-MOSFETs, which achieves a conversion efficiency from the DC-Link to a 2.5MHz alternating current of 95% at 750W lamp power, including auxiliary power for the gate drivers and the controller. Furthermore, the paper describes an algorithm for the active power measurement of a 2.5MHz voltage and current signal with an oscilloscope, averaging in the frequency domain and spectral distinction of the active power at the switching frequency.