Power controlling unit for a trolley pole switch controller

Details Power controlling unit for a trolley pole switch controller Power controlling unit for a trolley pole switch controller

1996-05-01

1997-11-25

Wong, Peter S.

Electric power conversion systems

Current conversion

Having plural converters for single conversion

191 38, 191 37, 246419, 246468, H02M 108, E01B 710, B60M 118

Patent

active

056918887

ABSTRACT:
A power controlling unit for use with a radio board of a trolley pole switch controller is disclosed. The trolley pole switch has at least one frog for switching the path of travel that an energy collector takes through a junction of catenaries. The power controlling unit includes three reduction stages, a chopper control stage, and two output stages. A first reduction stage reduces power received from one catenary to an initial power level. The chopper control stage outputs two pairs of alternating signals. Controlled by a first pair of alternating signals, a second reduction stage reduces the initial power level to a secondary power level to operate the radio board. As long as it receives the initial power level, the third reduction stage reduces the secondary power level to a primary power level to operate the power controlling unit. Controlled by a second pair of alternating signals and the initial power level, when a turn output stage receives a turn command from the radio board, it switches power from one catenary to a turn solenoid of such frog thereby switching the path of travel that the energy collector will take to a turn catenary. Controlled by the second pair of signals and the initial power level, when a straight output stage receives a straight command from the radio board, it switches power from one catenary to a straight solenoid of such frog thereby switching the path of travel that the energy collector will take to a straight catenary.

REFERENCES:
patent: 5297661 (1994-03-01), Tschurbanoff
patent: 5390772 (1995-02-01), Ta et al.

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