Title :
Design of a new air-cored current transformer: analytical modeling and experimental validation
Author :
Porto, D. ; Bermudez, J.L. ; Rachidi, F. ; Favre, E. ; Richard, B.
Author_Institution :
Power Syst. Lab., Swiss Fed. Inst. of Technol., Lausanne, Switzerland
Abstract :
The paper describes a modeling tool for the design of a new air-cored current transformer called PRiME (planar Rogowski current measurement) designed on a printed-circuit board (PCB) with the coil made of the PCB printed copper layers. The PRiME technology discussed in this paper exhibits a very original way of getting an efficient external field rejection, allowing the design of air-cored transducers with remarkable overall performances. A theoretical model of the PRiME transducer is presented. The model permits to perform systematic optimization of the design parameters, allowing to tune any of them and analyze their impact on the overall PRiME performances. The model is based on the Neumann´s formula which allows a straightforward representation of complex coils. The model and the simulation tool are validated versus experimental measurements carried out for different sensor configurations.
Keywords :
current transformers; electric current measurement; electric sensing devices; printed circuits; transformer cores; transformer windings; Neumann formula; PRiME technology; air-cored current transformer; air-cored transducers; planar Rogowski current measurement; printed copper layers; printed-circuit board; Analytical models; Coils; Conductors; Copper; Current measurement; Current transformers; Magnetic circuits; Magnetic sensors; Power system modeling; Transducers;
Conference_Titel :
Industry Applications Conference, 2004. 39th IAS Annual Meeting. Conference Record of the 2004 IEEE
Print_ISBN :
0-7803-8486-5
DOI :
10.1109/IAS.2004.1348456
