ESTIMANTED POSITION APPARATUS OF MAGNETIC LEVITATION TRAIN FOR PHASE CONTROL IN PROPELLED INVERTOR OF THE TRAIN BASED BY LS-LSM

摘要

The present invention relates to an apparatus for monitoring a real-time track condition using a location sensor and an acceleration sensor of a magnetic levitation system. A train location estimation apparatus for controlling the phase of a propelling inverter in a magnetic levitation train based on LS-LSM has a great ripple effect according to the commercialization of a magnetic levitation train based on LS-LSM by providing, in the high-speed magnetic levitation train based on LS-LSM, the precise location information of the train to offer phase necessary for the propelling inverter in real time, and can reduce costs by replacing a high-performance and high-priced location detector required by the propelling inverter based on LS-LSM. The propelling inverter provides current necessary for a linear synchronous motor of the magnetic levitation train. The train location estimation apparatus computes a location estimation value in which the propelling torque of the propelling inverter is precisely estimated from an input value in order to acquire phase information having a cycle 2-5 times faster than a cycle necessary for the propelling inverter from absolute location information transmitted from a location detector of the magnetic levitation train at regular intervals such that the propelling inverter controls an amount of current for speed control based on a current speed of the magnetic levitation train. The train location estimation apparatus provides phase information required to control the output current of the linear synchronous motor using the computed location estimation value.