Combined synchronous and asynchronous power supply for electrically powered shuttle trains
First Claim
1. A power supply and control system for electrically powered shuttle-trains comprising:
- at least one shuttle train having a motor and a generator and a location sensor;
a first plurality of track segments with associated synchronous power modules mounted trackside adjacent thereto exchanging power synchronously with a power grid through a plurality of power supply rail segments connectable to the motor or generator responsive to the location sensor;
a second plurality of track segments in proximity to upper and lower storage yards with associated variable frequency power modules mounted trackside adjacent thereto exchanging power through a second plurality of power supply rail segments connectable to the motor or generator;
isolation segments insulating adjoininq segments of the first plurality of synchronous track segments and second plurality of variable frequency segments; and
,a control system interconnected to the variable frequency power modules for controlling frequency responsive to the location sensor.
1 Assignment
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Accused Products
Abstract
A power supply and control system for electrically powered shuttle-trains incorporates at least one shuttle train having a motor and a generator. A first plurality of track segments has associated synchronous power modules exchanging power synchronously with a power grid through a plurality of power supply rail segments connectable to the motor or generator. A second plurality of track segments has associated variable frequency power modules exchanging power through a second plurality of power supply rail segments connectable to the motor or generator. Isolation segments separate adjacent power supply rail segments. A control system interconnected to the variable frequency power modules controls the frequency of each variable frequency power module based on the location of the shuttle train.
6 Citations
16 Claims
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1. A power supply and control system for electrically powered shuttle-trains comprising:
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at least one shuttle train having a motor and a generator and a location sensor; a first plurality of track segments with associated synchronous power modules mounted trackside adjacent thereto exchanging power synchronously with a power grid through a plurality of power supply rail segments connectable to the motor or generator responsive to the location sensor; a second plurality of track segments in proximity to upper and lower storage yards with associated variable frequency power modules mounted trackside adjacent thereto exchanging power through a second plurality of power supply rail segments connectable to the motor or generator; isolation segments insulating adjoininq segments of the first plurality of synchronous track segments and second plurality of variable frequency segments; and
,a control system interconnected to the variable frequency power modules for controlling frequency responsive to the location sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of operation of an electric railway system having a first plurality of track segments with associated synchronous power modules exchanging power synchronously with a power grid through a plurality of power supply rail segments connectable to a motor or generator of a shuttle train;
- a second plurality of track segments with associated variable frequency power modules exchanging power through a second plurality of power supply rail segments connectable to the motor or generator;
isolation segments separating adjoining power supply rail segments; and
, a control system interconnected to the variable frequency power modules for controlling frequency comprising the steps of;interconnecting the shuttle train generator to a first power supply, rail segment on a primary downhill track with synchronous power from regenerative braking of the shuttle train by the generator; converting power through a direct synchronization power module to a power grid; sensing a location by a sensor on the shuttle train indicating that the shuttle train is approaching an isolation segments; directing an adjoining first variable frequency power module to establish the synchronous frequency; when the shuttle train passes across the isolation segment commencing power transfer with the first variable frequency power module through a second power supply rail segment; directing the first variable frequency power module to reduce frequency thereby decelerating the shuttle train. - View Dependent Claims (13, 14, 15, 16)
- a second plurality of track segments with associated variable frequency power modules exchanging power through a second plurality of power supply rail segments connectable to the motor or generator;
Specification