skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Reluctance apparatus for flywheel energy storage

Abstract

A motor generator for providing high efficiency, controlled voltage output or storage of energy in a flywheel system. A motor generator includes a stator of a soft ferromagnetic material, a motor coil and a generator coil, and a rotor has at least one embedded soft ferromagnetic piece. Control of voltage output is achieved by use of multiple stator pieces and multiple rotors with controllable gaps between the stator pieces and the soft ferromagnetic piece.

Inventors:
 [1]
  1. (Downers Grove, IL)
Issue Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
873128
Patent Number(s):
6097118
Assignee:
University of Chicago (Chicago, IL) ANL
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
reluctance; apparatus; flywheel; energy; storage; motor; generator; providing; efficiency; controlled; voltage; output; stator; soft; ferromagnetic; material; coil; rotor; embedded; piece; control; achieved; multiple; pieces; rotors; controllable; gaps; voltage output; energy storage; motor generator; magnetic material; ferromagnetic material; flywheel energy; controlled voltage; multiple stator; /310/

Citation Formats

Hull, John R. Reluctance apparatus for flywheel energy storage. United States: N. p., 2000. Web.
Hull, John R. Reluctance apparatus for flywheel energy storage. United States.
Hull, John R. Sat . "Reluctance apparatus for flywheel energy storage". United States. https://www.osti.gov/servlets/purl/873128.
@article{osti_873128,
title = {Reluctance apparatus for flywheel energy storage},
author = {Hull, John R.},
abstractNote = {A motor generator for providing high efficiency, controlled voltage output or storage of energy in a flywheel system. A motor generator includes a stator of a soft ferromagnetic material, a motor coil and a generator coil, and a rotor has at least one embedded soft ferromagnetic piece. Control of voltage output is achieved by use of multiple stator pieces and multiple rotors with controllable gaps between the stator pieces and the soft ferromagnetic piece.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}

Patent:

Save / Share: