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Research of electromagnetic interference on the eddy current sensor in the inverter-motor driving system

The non-contact eddy current sensor was used spread in the inverter- motor driving system to measure the vibration and rotate speed of the motor. Since there are different kinds of electromagnetic interferences in high-power inverter-motor driving system, the measurement results should be affected by the electromagnetic interference. A rotating speed sensor was researched in this paper, the interference effects were analyzed and the solutions were proposed. The analysis was verified by the experiment.