Design and application of non-contact flexible self-biased magnetoelectric current sensor
Aiming at the problems of easy magnetic core saturation,large volume,narrow response bandwidth and high preparation cost of existing current sensors in the power grid,a flexible self-biased magnetoelectric current sensor is designed.Firstly,the magnetoelectric performance of the magnetoelectric current sensor in the zero bias state is tested.The magnetoelectric voltage coefficient can reach 17.65 V/(cm·Oe),which shows that the sensor has excellent magnetoelectric response performance in the zero bias state.Then,current detecting ability of the sensor is verified by the built current test platform.The results show that the sensor has good current monitoring ability at resonance and power frequency,and the sensitivity is33.07mV/A at power frequency current of 50 Hz,which has excellent sensitivity and linearity.Finally,the designed magnetoelectric current sensor is applied in the business of circulating current monitoring of power cable sheath,and the operation is good,which shows that non-contact flexible self-biased magnetoelectrc current sensor has great application value and broad application prospect in the field of non-contact current detection of power grid.
magnetoelectric current sensormagnetoelectric propertiesnon contact current detectionmagnetoelectric voltage coefficient
万方数据
维普
