Research and Design of a New Type of High Current Bidirectional Hall Current Sensor

摘要

At present, the existing Hall current sensor can only accurately measure the current in a single direction, but the bidirectional current flow often occurs in the field of new energy, so the traditional single Hall current sensor cannot solve the problem of bidirectional current measurement. Therefore, this paper proposes and designs a new high current bidirectional Hall current sensor, which uses a single power supply H-bridge circuit, and uses the principle of magnetic balance of the superimposed magnetic field added to the Hall chip. Works the triode in H-bridge circuit in different amplification states, and through collecting the voltage size and direction at both ends of the coil, the problem of high current bidirectional current measurement is solved. The practical test meets the measurement requirements of 0-600A bidirectional DC current.