Design And Research Of High Voltage Disconnecting Switch Asymmetric Winding Motor Operating Mechanism

For high voltage disconnecting switch, operation mechanism should fast response and have high output torque. Existing motor operating mechanism have complicated deceleration system, and parts is more, transmission mechanism complex, and moving procedure is uncontrolled. So, it is necessary for researching a motor directly-drive DS with high output torque, more simple transmission mechanism, and moving procedure is controlled.The structure and parameters of motor is designed according to the load-torque, rotary inertia and movement characteristic curve of disconnecting switch. The designed motor is simulated by using finite element software. The results indicate that the design is reasonable and performance is reliable. Based on the simulation of the motors with different parameter and structure, the influences of parameter and structure on dynamic characteristic are analysis.First, a design procedure which can make sure the requirement of the diver-motor use in the operation mechanism base on the analysis on the transmission mechanism has been presented. The curves of the winding current, torque and angle of the motor are gained based on the experiment on the vacuum circuit breaker equipped motor operation mechanism. The results indicate that the design procedure is feasible. It provides a base for the high voltage disconnecting switch employing the motor operating mechanism.Second, the relationships between the motor angle and contact stroke, the equivalent rotary inertia and load-torque characteristics during the motion of motor are gained after calculating the moving characteristics of motor operation mechanism. The structure and parameters of motor is designed according to the characteristics requirement of disconnecting switch. The electromagnetic field is carry out by using the finite element method.Finally, the curves of the winding current, torque, rotation speed and angle of the motor are gained by simulation on DS operation. The influences of parameter and structure on dynamic characteristic are analysis based on the simulation of the motors with different parameter and structure.