Title :
High-Performance Planar Isolated Current Sensor for Power Electronics Applications
Author :
Dalessandro, Luca ; Karrer, Nicolas ; Kolar, Johann W.
Author_Institution :
Swiss Fed. Inst. of Technol. Zurich, Zurich
Abstract :
A planar current sensor, comprised of a magnetic current transformer and a hall-effect element, is presented. The sensor has a broad frequency bandwidth from dc up to 30 MHz, a high current rating (40-A dc), superior linearity, high EMI immunity, small size, robustness, and low realization cost. The main design formulations are given analytically; simulations and finite-element results are presented for verification. Experimental results of current step response and dv/dt immunity are included.
Keywords :
current transformers; electric sensing devices; finite element analysis; power electronics; Hall-effect element; current step response; finite-element simulations; frequency bandwidth; high-performance planar isolated current sensor; magnetic current transformer; power electronics; Bandwidth; Costs; Current transformers; Electromagnetic interference; Frequency; Linearity; Magnetic analysis; Magnetic sensors; Power electronics; Robustness; Current measurement; Hall-effect sensor; current transformer; permeance-capacitance analogy;
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2007.904198
