Design of coreless PCB transformers for power and signal isolation in a modular ADC system for power quality data acquisition

Carpenter, Michael T. & Broadmeadow, Mark (2014) Design of coreless PCB transformers for power and signal isolation in a modular ADC system for power quality data acquisition. In Abu-Siada, A. & Masoum, M.A.S. (Eds.) Proceedings of the Australasian Universities Power Engineering Conference (AUPEC 2014), IEEE, Curtin University, Perth, WA.

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Available industrial energy meters offer high accuracy and reliability, but are typically expensive and low-bandwidth, making them poorly suited to multi-sensor data acquisition schemes and power quality analysis. An alternative measurement system is proposed in this paper that is highly modular, extensible and compact. To minimise cost, the device makes use of planar coreless PCB transformers to provide galvanic isolation for both power and data. Samples from multiple acquisition devices may be concentrated by a central processor before integration with existing host control systems. This paper focusses on the practical design and implementation of planar coreless PCB transformers to facilitate the module's isolated power, clock and data signal transfer. Calculations necessary to design coreless PCB transformers, and circuits designed for the transformer's practical application in the measurement module are presented. The designed transformer and each application circuit have been experimentally verified, with test data and conclusions made applicable to coreless PCB transformers in general.

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ID Code: 82552
Item Type: Conference Paper
Refereed: Yes
Keywords: Analogue-digital conversion, Power supply quality, Power transformers, Printed circuits, Sensor fusion
DOI: 10.1109/AUPEC.2014.6966600
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 IEEE
Deposited On: 18 Mar 2015 03:46
Last Modified: 13 Sep 2016 18:50

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