Variable-speed dynamotor

Details Variable-speed dynamotor Variable-speed dynamotor

1996-03-26

1999-03-09

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310211, 318729, H02K 100

Patent

active

058805508

ABSTRACT:
A variable-speed dynamotor has a stator having a first set of windings that provide a number of poles for rotating a rotor and a second set of windings that provide a number of poles different from the number of poles provided by the first set of windings. Voltages or currents supplied to the second set of windings are controlled to generate radial forces acting on the rotor for thereby controlling a radial position of the rotor, suppressing vibrations of the rotor, adjusting rotational balancing of the rotor, and controlling radial damping of the rotor.

REFERENCES:
patent: 4338557 (1982-07-01), Wanlass
patent: 4503377 (1985-03-01), Kitabayashi et al.
patent: 4625160 (1986-11-01), Hucker
patent: 5083077 (1992-01-01), Wallace
patent: 5260642 (1993-11-01), Huss
patent: 5291115 (1994-03-01), Ehsani
patent: 5384527 (1995-01-01), Rozman
S. Furuya, et al., Successful Achievement in a Variable Speed Pumped Storage Power System at Yagisawa Power Plant, PCC-Yokohama '93, IEEE 1993, pp. 603-608.
IEEJ (Institute of Electrical Engineers of Japan) Technical Report No. 551, Jun. 1995, pp. 90-93, IEEJ.
A. Chiba, et al., An Analysis of Bearingles AC Motors, IEEE Transactions on Energy Conversion, vol. 9, No. 1, Mar. 1994, pp. 61-68, IEEE, Japan.
A. Chiba, et al., Principles and No Load Characteristics of Bearingless Motors with a Cylindrical Rotor, T. IEE Japan, vol. 113-D, No. 4, 1993, pp. 539-547.

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