Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1997-07-02
1999-03-23
LaBalle, Clayton
Electrical generator or motor structure
Dynamoelectric
Rotary
310114, 310256, H02K 1716, H02K 1600, H02K 112
Patent
active
058864458
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.
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Louis J. Hunt "A New Type of Induction Motor," paper read Mar. 19, 1907, Manchester Local Section, Journal IEE, pp. 648-677, 1907.
Y. Liao, "Design of a Brushless Doubly-Fed Induction Motor for Adjustable Speed Drive Applications", IEEE IAS Annual Meeting, San Diego, California, 1986, pp. 850-855.
LaBalle Clayton
Lockheed Martin Energy Research Corporation
Spicer James M.
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