Extended cage adjustable speed electric motors and drive packages

Patent · Fri Jan 01 00:00:00 EST 1999

OSTI ID:872215

Hsu, John S ^[1]

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1. Oak Ridge, TN

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.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: AC05-96OR22464
• Assignee: Lockheed Martin Energy Research Corporation (Oak Ridge, TN)
• Patent Number(s): US 5886445
• OSTI ID: 872215
• Country of Publication: United States
• Language: English

Related Subjects

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
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