Fail safe controllable output improved version of the Electromec

Details Fail safe controllable output improved version of the Electromec Fail safe controllable output improved version of the Electromec

1997-03-03

1999-01-19

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310191, H02K 1926, H02K 702

Patent

active

058616900

ABSTRACT:
Mechanical means are provided to control the voltages induced in the windings of a generator/motor. In one embodiment, a lever is used to withdraw or insert the entire stator windings from the cavity where the rotating field exists. In another embodiment, voltage control and/or switching off of the output is achievable with a variable-coupling generator/motor. A stator is made up of two concentric layers of windings, with a larger number of turns on the inner layer of windings than the outer layer of windings. The windings are to be connected in series electrically, that is, their voltages add vectorially. The mechanical arrangement is such that one or both of the windings can be rotated with respect to the other winding about their common central axis. Another improved design for the stator assembly of electromechanical batteries provides knife switch contacts that are in electrical contact with the stator windings. The operation of this embodiment depends on the fact that an abnormally large torque will be exerted on the stator structure during any short-circuit condition.

REFERENCES:
patent: 5446319 (1995-08-01), Pawlowski
patent: 5495221 (1996-02-01), Post
patent: 5627419 (1997-05-01), Miller
patent: 5705902 (1998-01-01), Merritt et al.
Richard F. Post, T. Kenneth Fowler, S. F. Post, "A High Efficiency Electromechanical Battery," UCRL-JC-110861, Lawrence Livermore National Laboratory, Livermore, California, Jun. 11, 1992.

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