| 摘要 |
PROBLEM TO BE SOLVED: To provide a current sensor mechanism in which a decrease in current detection accuracy is restricted while a signal processing is simplified.SOLUTION: A current sensor mechanism comprises: a conductor (40) in which AC current flows; a magnetoelectric transducer (20); and a processing part (30). The conductor comprises: a first magnetoelectric transducer (21) that extends in the flowing direction of AC current, having a cross-section orthogonal to the flowing direction, in which the width is greater than the length, and used to convert only an electric field along the lateral direction into an electric signal; and a second magnetoelectric transducer (22) used to convert only an electric field along the vertical direction into an electric signal. The first magnetoelectric transducer and the second magnetoelectric transducer are arranged in order so as to be laterally away from the geometric center (CG) of the conductor. Using an output signal from the second magnetoelectric transducer multiplied by a correction coefficient (α) for correcting the difference between the behaviors of the output signals from the first magnetoelectric transducer and second magnetoelectric transducer due to an outer skin effect, the processing part subtracts the output signal from the first magnetoelectric transducer. |
