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Class 290/12 - Rotary field and armature


Subclass of Class 290 - Prime-mover dynamo plants
Definition: Electric-control traction-motor prime-mover dynamo plants
No. of patents: 3
Last issue date: 04/15/2008


NumberTitleIssue Date
7358620Methods and apparatus for ride-through operation of a complementary device to a transient power source
In accordance with certain exemplary embodiments, the present technique provides methods and apparatus for providing operating power to a complementary device to an induction device based uninterruptible power source (UPS) via a direct current (dc) bus. In one embod...
04/15/2008
7109686System and method for precharging and discharging a high power ultracapacitor pack
This invention is a system and a method that uses the braking resistor, commonly used and available in electrically or hybrid-electrically propelled vehicles, to limit the precharge current during the startup of a high power ultracapacitor pack energy storage device...
09/19/2006
5977648Hydraulically driven low reactance, large air gap permanent magnet generator and voltage regulation system for use therewith
An electric power generating system comprises a low reactance, large airgap permanent magnet generator driven by a hydraulic motor to generate a poly-phase AC output voltage. Because the permanent magnet generator is a low reluctance, large airgap machine...
11/02/1999
 
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