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High-Performance Planar Isolated Current Sensor for Power Electronics Applications

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3 Author(s)
Dalessandro, L. ; Swiss Fed. Inst. of Technol. Zurich, Zurich ; Karrer, N. ; Kolar, J.W.

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.

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Power Electronics, IEEE Transactions on  (Volume:22 ,  Issue: 5 )