Wide Bandwidth Low Complexity Isolated Current Sensor to be Employed in a 10kW/500kHz Three-Phase Unity Power Factor PWM Rectifier System
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چکیده
A current sensor employing a Hall-based field sensing ASIC in combination with a current transformer is proposed. The sensor is characterized by a measuring range of ±50A, an upper bandwidth limit of 20MHz and high dv/dt-immunity up to 10kV/μs. The sensor functional principle and dimensioning are discussed in detail. Parameters determining the sensor bandwidth are clarified, the theoretical considerations are verified by experiments. Finally, measures for further increasing the sensor bandwidth are proposed.
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تاریخ انتشار 2002