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

Title: Dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine

Abstract

The present invention provides a novel dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine. The present invention improves electrical machine torque density and efficiency. At least one concentric surface-mounted permanent magnet dual-rotor is located inside and outside of a torus-shaped stator with back-to-back windings, respectively. The machine substantially improves machine efficiency by reducing the end windings and boosts the torque density by at least doubling the air gap and optimizing the machine aspect ratio.

Inventors:
;
Issue Date:
Research Org.:
Wisconsin Alumni Research Foundation, Madison, WI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175450
Patent Number(s):
6924574
Application Number:
10/449,338
Assignee:
Wisconsin Alumni Research Foundation
Patent Classifications (CPCs):
H - ELECTRICITY H02 - GENERATION H02K - DYNAMO-ELECTRIC MACHINES
DOE Contract Number:  
AC36-99-GO10337
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Qu, Ronghai, and Lipo, Thomas A. Dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine. United States: N. p., 2005. Web.
Qu, Ronghai, & Lipo, Thomas A. Dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine. United States.
Qu, Ronghai, and Lipo, Thomas A. Tue . "Dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine". United States. https://www.osti.gov/servlets/purl/1175450.
@article{osti_1175450,
title = {Dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine},
author = {Qu, Ronghai and Lipo, Thomas A.},
abstractNote = {The present invention provides a novel dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine. The present invention improves electrical machine torque density and efficiency. At least one concentric surface-mounted permanent magnet dual-rotor is located inside and outside of a torus-shaped stator with back-to-back windings, respectively. The machine substantially improves machine efficiency by reducing the end windings and boosts the torque density by at least doubling the air gap and optimizing the machine aspect ratio.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {8}
}

Patent:

Save / Share:

Works referenced in this record:

Double-Rotor Induction Motor
journal, July 1969


A brushless DC motor of a new structure with reduced torque fluctuation
journal, January 1985


Pulsating torque minimization techniques for permanent magnet AC motor drives-a review
journal, April 1996


Interior Permanent-Magnet Synchronous Motors for Adjustable-Speed Drives
journal, July 1986


Field circuit analysis of permanent magnet synchronous motors
journal, July 1994


High-Performance Switched Reluctance Brushless Drives
journal, July 1986


A Review of the Integral-Horsepower Switched Reluctance Drive
journal, July 1986


Variable-speed switched reluctance motors
journal, January 1980


Simulation of a four Phase Switched Reluctance Motor Including the Effects of Mutual Coupling
journal, January 1989


Analytical prediction of the cogging torque in radial-field permanent magnet brushless motors
journal, March 1992


Low-cost compact permanent magnet machine for adjustable-speed pump application
journal, January 1998


Prediction of cogging torque using the flux-MMF diagram technique
journal, January 1996


Recent progress in the development in solid-state AC motor drives
journal, April 1988


Torque-ripple minimization with indirect position and speed sensing for switched reluctance motors
journal, January 2000


Torque Production in Permanent-Magnet Synchronous Motor Drives with Rectangular Current Excitation
journal, July 1984


Transducerless position and velocity estimation in induction and salient AC machines
journal, January 1995


Reduction of cogging torque in permanent magnet motors
journal, January 1988


Power electronics and motion control-technology status and recent trends
journal, January 1993


An analysis of the cogging torque of a dc motor and a new technique of reducing the cogging torque
journal, September 1983


Toroidal Winding Geometry for High Voltage Superconducting Alternators
journal, November 1974


Study of Cogging Torque in Permanent Magnet Machines
journal, June 1999


Design and Performance of a Converter Optimized AC Machine
journal, July 1984


Optimal current control strategies for surface-mounted permanent-magnet synchronous machine drives
journal, January 1999


Observer-based direct field orientation: analysis and comparison of alternative methods
journal, January 1994


A simple and robust adaptive controller for detuning correction in field-oriented induction machines
journal, January 1992


Motion control with induction motors
journal, January 1994


Sizing Equations for Electrical Machinery
journal, March 1987


A method of reducing ripple torque in permanent magnet motors without skewing
journal, March 1993


Synchronous Reluctance Machines-A Viable Alternative for AC Drives?
journal, November 1991


Converter Volt-Ampere Requirements of the Switched Reluctance Motor Drive
journal, September 1985


Soft magnetic composite materials - use for electrical machines
conference, January 1995


Design and implementation of an adaptive controller for torque ripple minimization in PM synchronous motors
journal, September 2000