LINEAR INDUCTION MOTOR AND PASSENGER TRANSIT FACILITY USING LINEAR INDUCTION MOTOR THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a linear induction motor, in which thrust fluctuation by a joint section for a secondary conductor is inhibited, and a passenger transit facility using the linear induction motor. ;SOLUTION: In a secondary conductor 1 installed extending all over the processes of the movement of a primary side 2, the pole pitches of the primary side 2 are set so that the intervals of joints 5 reach a fixed value (k+1/2)τ to the length nτ of the primary side 2 when τ, (k) and (n) are represented by integers. Since thrust ripples in the joints 5 at both left-right ends of the secondary conductor 1 have the in-phase, and have antiphase to the joint 5 at the center of the secondary conductor 1, and coils 4 working to the joints 5 at both left-right ends are reduced for an end-effect countermeasure when the third joint 5 is placed in positional relationship oppositely faced to the primary side 2, the sum of the thrust ripples generated in the joints 5 at both left-right ends reaches the magnitude of approximately the same extent as a thrust ripple generated in one joint 5 at the center, and the thrust ripples can be offset one another by these three joints 5.;COPYRIGHT: (C)1997,JPO