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Title: Fail safe controllable output improved version of the Electromechanical battery

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.

Inventors:
 [1]
  1. (Walnut Creek, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
872109
Patent Number(s):
5861690
Assignee:
Regents of University of California (Oakland, CA) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
fail; safe; controllable; output; improved; version; electromechanical; battery; mechanical; means; provided; control; voltages; induced; windings; generator; motor; embodiment; lever; withdraw; insert; entire; stator; cavity; rotating; field; exists; voltage; switching; achievable; variable-coupling; concentric; layers; larger; inner; layer; outer; connected; series; electrically; add; vectorially; arrangement; rotated; respect; winding; common; central; axis; design; assembly; batteries; provides; knife; switch; contacts; electrical; contact; operation; depends; abnormally; torque; exerted; structure; short-circuit; condition; stator windings; stator winding; inner layer; central axis; outer layer; electrical contact; mechanical means; voltage control; stator assembly; concentric layers; electromechanical battery; circuit condition; mechanical arrangement; fail safe; improved version; /310/

Citation Formats

Post, Richard F. Fail safe controllable output improved version of the Electromechanical battery. United States: N. p., 1999. Web.
Post, Richard F. Fail safe controllable output improved version of the Electromechanical battery. United States.
Post, Richard F. Fri . "Fail safe controllable output improved version of the Electromechanical battery". United States. https://www.osti.gov/servlets/purl/872109.
@article{osti_872109,
title = {Fail safe controllable output improved version of the Electromechanical battery},
author = {Post, Richard F.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

Patent:

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