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Title: Extended cage adjustable speed electric motors and drive packages

Abstract

The rotor cage of a motor is extended, a second stator is coupled to this extended rotor cage, and the windings have the same number of poles. The motor torque and speed can be controlled by either injecting energy into or extracting energy out from the rotor cage. The motor produces less harmonics than existing doubly-fed motors. Consequently, a new type of low cost, high efficiency drive is produced.

Inventors:
 [1]
  1. Oak Ridge, TN
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
872215
Patent Number(s):
5886445
Assignee:
Lockheed Martin Energy Research Corporation (Oak Ridge, TN)
Patent Classifications (CPCs):
H - ELECTRICITY H02 - GENERATION H02K - DYNAMO-ELECTRIC MACHINES
DOE Contract Number:  
AC05-96OR22464
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
extended; cage; adjustable; speed; electric; motors; drive; packages; rotor; motor; stator; coupled; windings; poles; torque; controlled; injecting; energy; extracting; produces; harmonics; existing; doubly-fed; consequently; type; cost; efficiency; produced; electric motor; motor torque; rotor cage; adjustable speed; electric motors; speed electric; extracting energy; /310/

Citation Formats

Hsu, John S. Extended cage adjustable speed electric motors and drive packages. United States: N. p., 1999. Web.
Hsu, John S. Extended cage adjustable speed electric motors and drive packages. United States.
Hsu, John S. Fri . "Extended cage adjustable speed electric motors and drive packages". United States. https://www.osti.gov/servlets/purl/872215.
@article{osti_872215,
title = {Extended cage adjustable speed electric motors and drive packages},
author = {Hsu, John S},
abstractNote = {The rotor cage of a motor is extended, a second stator is coupled to this extended rotor cage, and the windings have the same number of poles. The motor torque and speed can be controlled by either injecting energy into or extracting energy out from the rotor cage. The motor produces less harmonics than existing doubly-fed motors. Consequently, a new type of low cost, high efficiency drive is produced.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

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Works referenced in this record:

A new type of induction motor
journal, September 1907