Fail safe controllable output improved version of the Electromechanical battery

Patent · Fri Jan 01 00:00:00 EST 1999

OSTI ID:872109

Post, Richard F ^[1]

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1. Walnut Creek, CA

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.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 5861690
• OSTI ID: 872109
• Country of Publication: United States
• Language: English

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controllable
output
improved
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electromechanical
battery
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means
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control
voltages
induced
windings
generator
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embodiment
lever
withdraw
insert
entire
stator
cavity
rotating
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exists
voltage
switching
achievable
variable-coupling
concentric
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inner
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outer
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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
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/310/