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@inproceedings{incurvati:ipac2021-tupab389,
author = {M. Incurvati and T. Margreiter and T. Riedler and R. Stärz},
title = {{High Precision Four Quadrant Converter with GaN Technology}},
booktitle = {Proc. IPAC'21},
pages = {2431--2434},
eid = {TUPAB389},
language = {english},
keywords = {controls, simulation, operation, power-supply, damping},
venue = {Campinas, SP, Brazil},
series = {International Particle Accelerator Conference},
number = {12},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {08},
year = {2021},
issn = {2673-5490},
isbn = {978-3-95450-214-1},
doi = {10.18429/JACoW-IPAC2021-TUPAB389},
url = {https://jacow.org/ipac2021/papers/tupab389.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-TUPAB389},
abstract = {{New proton therapy facilities for the cure of tumors as well as high-energy photon sources are currently being installed all around the world. In this field, the request for special power supplies for corrector, scanning, and quadrupole magnets are increasing. For these applications, mandatory requirements are high bandwidth and current stability as well as low output ripple which are conflicting constraints. A feasibility study, prototype development, measurements, and investigations on the control methodology of a wide-bandgap GaN semiconductor-based power module is presented in the paper. The developed power module features the following characteristics: Eurocard standard PCB, bipolar 4Q operation, minimum switching frequency 100 kHz, bandwidth 5 kHz, output voltage and current up to 200 V / 8 A, output current ripple <20 ppm. The enlisted characteristics make it suitable for high inductive loads requiring fast transients (scanning magnets). An RST controller will be developed and a system identification approach to the transfer function of two parallel-connected power modules will be presented along with simulations assessing the performance.}},
}