10kV真空断路器磁电速度传感器的设计

Design of Magnetoelectric Speed Sensor for 10 kV Vacuum Circuit Breaker

为检测真空断路器分合闸速度,设计了差动动磁铁型磁电速度传感器。通过对电磁感应定律公式的变换以及对永磁体磁场的有限元分析,确定了速度传感器的结构;通过对传感器输出—输入特性的分析,确定了线圈的连接方法;通过对传感器磁场分布进行分析,给出了磁通量算法及求解结果,分析了磁电速度传感器的性能;利用有限元分析软件对磁电速度传感器进行仿真分析。结果表明,磁电速度传感器的结构合理,性能良好。

For detecting the speed of dynamic contact of a vacuum circuit breaker, a differential moving magnet type magnetoelectric speed sensor is designed. Through the transformation of electromagnetic induction law formula and finite element analysis of the permanent magnet magnetic field, the structure of the speed sensor is obtained. Through the analysis of the sensor output-input characteristics, the connection method of coil is determined. By analyzing the sensor＇s magnetic field distribution, a magnetic flux algorithm and the solution are given. And the performance of the magnetoelectric speed sensor is also analyzed. Simulation analysis is carried out via commercial software on the magnetoelectric speed sensor, and the results show that the structure and performance of the magnetoelectric speed sensor are satisfactory.