Electrical transmission or interconnection systems – Plural load circuit systems – Control of current or power
Patent
1984-07-31
1987-03-10
Shoop, Jr., William M.
Electrical transmission or interconnection systems
Plural load circuit systems
Control of current or power
307131, 307 64, 307 66, 307 80, 318107, 318161, 318150, 290 1R, 320 5, 136293, H02P 1318
Patent
active
046492879
ABSTRACT:
An energy storage system for a spacecraft is provided which employs a solar powered flywheel arrangement including a motor-generator which, in different operating modes, drives the flywheel and is driven thereby. A control circuit, including a threshold comparator, senses the output of a solar energy converter, and when a threshold voltage is exceeded thereby indicating the availability of solar power for the spacecraft loads, activates a speed control loop including the motor-generator so as to accelerate the flywheel to a constant speed and thereby store mechanical energy, while also supplying energy from the solar converter to the loads. Under circumstances where solar energy is not available and thus the threshold voltage is not exceeded, the control circuit deactivates the speed control loop and activates a voltage control loop that provides for operation of the motor as a generator so that mechanical energy from the flywheel is converted into electrical energy for supply to the spacecraft loads.
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Beumer Joseph H.
Ip Shik Luen Paul
Manning John R.
Shoop Jr. William M.
The United States of America as represented by the Administrator
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