It introduces how to use micro-computer control and fire-work emission type operating mechanism to achieve phase-separation operation for the circuit breakers, to enable them to break on the time of current over zero and to make on the time of voltage over zero correctly, so as to achieve in the state of on-load to make closing and breaking off without arc with the circuit breakers.

Design and analysis of novel operating mechanism drive motor for high voltage circuit breaker;

New-style motor operating mechanism applicable for high voltage disconnecting and earthing switch;

To improve the levels of technique of the High Voltage Circuit Breakers(HVCB),a new type of operating mechanism of HVCB driven directly by a three-phase permanent magnet synchronous motor(PMSM) was studied.

The transmitting characteristic and the output power of the operating device of vacuum circuit breaker have directly effect on its operating property and life.

A magnetic field calculation method for the permanent magnetic operating device is presented, and the calculation results and magnetic field distribution are analyzed in this paper.

Combined with the opening characteristics of the operating device the gas flow field in the arc chamber of SF6 puffer circuit breaker is calculated.

Multi-objective dynamic optimization design of permanent magnet actuator for contactor

In the spring actuator for a vacuum circuit breaker,the interrupting performance,life span and the mechanical property of the whole system is directly influenced by the transmission characteristics of the cam.

Considering the fact that, during the operation, the springs of actuator for vacuum circuit breaker is the source of power and force, the reliability of spring-cam actuator is investigated through an optimization design of the actuator for 12 kV, 12.