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

Volume

22

Issue

5

fYear

2007

Firstpage

1682

Lastpage

1692

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;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2007.904198

Filename

4300869