Operating Mechanism Design of High Voltage Circuit Breakers

For better operating performance, this paper discusses the application of linear inductive motors in CB operating mechanism, and presents a new induction motor mechanism(IMM) which approves the effectiveness of this design though the magnetic field analysis. The drive system model is set up for load simulation and tripping curve simulation. Pointing at proper border effect of IMM mathematical model of vector control system is built when consider dynamic vertical border effect, and simulated and model machine tested of the mechanism control system. The results show that it can get a good dynamic performance, small vibration and perfectly meet the requirements of mechanism movement characteristics during the opening and closing of CB when the linear motor direct drive CB actuator operating shaft, and still lay the foundations of CB intelligence control.