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Reducing power consumption of blowers in emergency ventilation by field weakening
Citation Link: https://doi.org/10.15480/882.17052
Publikationstyp
Conference Paper
Date Issued
2026-03
Sprache
English
Author(s)
TORE-DOI
First published in
Number in series
3
Citation
18th Interdisciplinary AUTOMED Symposium in Collaboration with the TC Medical Robotics, AUTOMED 2026
Contribution to Conference
Publisher DOI
Publisher
Infinite Science Publishing
Field-weakening is an established technique for exceeding motor base speeds while maintaining constant input power. To improve energy efficiency of emergency ventilators, this paper presents a methodology for reducing torque to lower the input power of brushless DC (BLDC) motors during phases of constant pressure. Using the Clarke-Park transformation, the operating point is obtained by minimizing the voltage and then applied as phase-advance angle and modulation index in the voltage model. A proof-of-concept experimental setup yields power savings of up to 40% using field-weakening compared to conventional field-oriented control approaches, demonstrating its feasibility for energy savings in BLDC motors.
DDC Class
610: Medicine, Health
Publication version
publishedVersion
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