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Title: Electromechanical battery design suitable for back-up power applications

Abstract

The windings that couple energy into and out of the rotor of an electro-mechanical battery are modified. The normal stator windings of the generator/motor have been replaced by two orthogonal sets of windings. Because of their orthogonality, they are decoupled from each other electrically, though each can receive (or deliver) power flows from the rotating field produced by the array of permanent magnets. Due to the orthogonal design of the stator windings and the high mechanical inertia of the flywheel rotor, the resulting power delivered to the computer system is completely insensitive to any and all electrical transients and variabilities of the power from the main power source. This insensitivity includes complete failure for a period determined only by the amount of stored kinetic energy in the E-M battery modules that are supplied. Furthermore there is no need whatsoever for fast-acting, fractional-cycle switches, such as are employed in conventional systems, and which are complicated to implement.

Inventors:
 [1]
  1. Walnut Creek, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
874469
Patent Number(s):
6396186
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Classifications (CPCs):
H - ELECTRICITY H02 - GENERATION H02K - DYNAMO-ELECTRIC MACHINES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
electromechanical; battery; design; back-up; power; applications; windings; couple; energy; rotor; electro-mechanical; modified; normal; stator; generatormotor; replaced; orthogonal; sets; orthogonality; decoupled; electrically; receive; deliver; flows; rotating; field; produced; array; permanent; magnets; due; mechanical; inertia; flywheel; resulting; delivered; computer; completely; insensitive; electrical; transients; variabilities; main; source; insensitivity; complete; failure; period; determined; amount; stored; kinetic; e-m; modules; supplied; furthermore; whatsoever; fast-acting; fractional-cycle; switches; employed; conventional; systems; complicated; implement; power source; permanent magnet; stator winding; power applications; /310/

Citation Formats

Post, Richard F. Electromechanical battery design suitable for back-up power applications. United States: N. p., 2002. Web.
Post, Richard F. Electromechanical battery design suitable for back-up power applications. United States.
Post, Richard F. Tue . "Electromechanical battery design suitable for back-up power applications". United States. https://www.osti.gov/servlets/purl/874469.
@article{osti_874469,
title = {Electromechanical battery design suitable for back-up power applications},
author = {Post, Richard F},
abstractNote = {The windings that couple energy into and out of the rotor of an electro-mechanical battery are modified. The normal stator windings of the generator/motor have been replaced by two orthogonal sets of windings. Because of their orthogonality, they are decoupled from each other electrically, though each can receive (or deliver) power flows from the rotating field produced by the array of permanent magnets. Due to the orthogonal design of the stator windings and the high mechanical inertia of the flywheel rotor, the resulting power delivered to the computer system is completely insensitive to any and all electrical transients and variabilities of the power from the main power source. This insensitivity includes complete failure for a period determined only by the amount of stored kinetic energy in the E-M battery modules that are supplied. Furthermore there is no need whatsoever for fast-acting, fractional-cycle switches, such as are employed in conventional systems, and which are complicated to implement.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

Patent:

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