Linear induction motor drive for model railway layout - has high frequency motor component laid between rails and operated from controller

摘要

The models are powered using a frequency of approx. 400 Hz derived from the mains and controlled by a model layout controller desk so that to slow the models an increase in operating frequency is used and to speed up vice versa. A single linear motor (4) is located between the lines (8) of the layout and comprises a ferromagnetic base material with a good conducting non-ferrous top layer which brings the height of the linearly located motor to the same level as the track lines (8). The track lines (8) are powered and carry the current used for the phase shift capacitor, motor main and auxiliary windings plus the reversing relay which constitutes the single phase comb structured motor unit located in the drive model and which reacts to the central linearly motor component between the layout's lines (8). By using higher frequency operation and frequency changing for speed control the motor items are smaller and lighter in construction.