| With the development of low-carbon economy and the need of intelligent construction of power grid,higher requirements are put forward for the energy consumption,volume,overload resistance,breaking capacity and life of AC contactors in power line control applications.The AC contactor designed and manufactured based on the traditional electromagnetic principle has insufficient space for optimization because the driving energy is limited by the real-time energy conversion and conservation principle,that is,the energy conversion efficiency of electric energy to magnetic energy and magnetic energy rotation energy.In order to better optimize the AC contactor,this paper proposes a non-real-time energy conversion principle,which converts the electric energy into potential energy in advance for storage,and releases the potential energy into kinetic energy when needed.An energy storage drive mechanism composed of electric energy supply,magnetic retention,spring energy storage,spring drive cavity and cavity linkage contact is designed.The working principle,theoretical analysis,theoretical modeling,simulation test and physical test of the energy storage drive mechanism are introduced in detail.The component parameter determination,selection and prototype production of the energy storage drive mechanism are introduced in detail,and the physical test of the prototype is carried out.The test data show that the non-real-time energy conversion energy storage drive mechanism can complete the basic functions of the traditional AC contactor,and the performance is better than the traditional electromagnetic drive mechanism.It provides a feasible scheme for the development of new AC contactor products. |
