Research on Topology Analysis Method of Static Magnetic Network Model of New High Speed Electromagnetic Actuator

In this paper, based on the design of composite magnetic circuit, a new type of high-speed electromagnetic actuator (NHSEMA) with permanent magnetic was invented, which has the characteristics of low power consumption, strong electromagnetic force and high response. Those characteristics were systematically and deeply studied by means of theoretical analysis, numerical simulation and experiment. The magnetic network topology method was proposed to subdivide the structure of the NHSEMA, and construct the static characteristics simulation model of NHSEMA, with taking into account the magnetic flux leakage and edge flux of the system. The accuracy of simulation model of the NHSEMA was verified by set up the test platform. The error is about 3.1%, which proves that the model can achieve both calculation accuracy and speed. The static electromagnetic characteristics, energy conversion and magnetic flux distribution of NHSEMA were studied by using magnetic network topology simulation model. The research shows that compared with the traditional high-speed electromagnetic actuator (THSEMA), the electromagnetic force of NHSEMA is increased by about 30% under the same current driving. Meanwhile, the Joule heat of the coil can be lowered by 50%, and the energy loss of the actuator and the saturation degree of the iron core can be effectively decreased.