SYSTEM OF RAILWAY VEHICLE USING LINEAR MOTOR AND NON-CONTACT ELECTRIC POWER SUPPLY SYSTEM WITH MINIMIZING CONTROL TOPOLOGY OF AIR-GAP

摘要

A railroad car system using a linear motor and a non-contact power supply system is provided to improve efficiency of the non-contact power supply system by maintaining an air gap at a predetermined size in response to a change of a road surface and high frequency vibration of a moving load. A railroad car system includes a linear motor and a non-contact power supply system. The linear motor has a reaction plate which is parallel arranged along a moving direction of a load and a field(40) which is supported on a bottom surface of the load to form a predetermined air gap at an opposite side to the reaction plate and generates a moving field. The non-contact power supply system has a power transmitting unit which is parallel arranged along the moving direction of the load, a power collecting unit which is supported on the bottom surface of the load to form an air gap to be spaced apart from the power transmitting unit and supplies current induced from the power transmitting unit to the load, and an air gap control unit which controls positions of a stator and the power collecting unit to maintain the air gap at a predetermined size.