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US 5,770,909 AGranted
Wound rotor synchronous motor-generator and field control system therefor
AssigneeRosen Motors, L.P.
InventorsHarold A. Rosen, Brian R. Jensen, Thomas Hudspeth
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Abstract
A field control system for a wound rotor synchronous motor-generator used in electrically powered automobiles is capable of optimizing the performance of the motor-generator for all driving conditions. Using a rotary transformer to transmit power across the rotational boundary, it has no wearing parts and is silent. Preferably, the field control system has common elements with the controller which generates the stator currents of the synchronous motor-generator.
Claims5
A field control system for a wound rotor synchronous motor-generator, comprising:
- an adjustable power source operatively connected to the wound rotor synchronous motor-generator;
- a rotary transformer disposed within the wound rotor synchronous motor-generator for receiving power from said adjustable power source and generating field current;
- a rectifier receiving said field current and generating rectified field current applied to the wound rotor of the wound rotor synchronous motor-generator;
- and
- a filter serially connected between said power source and said rotary transformer for generating a sinusoidal waveform from a rectangular waveform produced by said stationary power source.
2 more elements
Dependencies are inferred from the claim text.