A Motor Drive Controller for High Voltage Circuit Breakers by using Mechanical Operation of PMSM

In this paper, a new type of motor drive operating mechanism of High Voltage Circuit Breakers (HVCB) based on techniques of power electronics and motor digital control has been studied. In this paper, the structure and the moving principle of operating mechanism for HVCB is analyzed and the control strategy for PMSM drive operating mechanism is described. The simulations, calculations and actual tests all indicate that parameters of the drive-motor such as the rotational inertia, the output torque and the output power will have impact on the performance of the operating mechanism. The research work of this paper has shown that it is advisable to adopt motor for driving operating mechanism of HVCB and such mechanism can meet the requirements for opening and closing operation of HVCBs.