Electrical generator or motor structure – Dynamoelectric – Conducting fluid
Patent
1989-09-25
1990-06-19
Salce, Patrick R.
Electrical generator or motor structure
Dynamoelectric
Conducting fluid
290 52, 310178, 417 50, H02N 300, H02K 4414
Patent
active
049356500
ABSTRACT:
A MHD turbomachine includes a rotary ferromagnetic rotor, a stationary ferromagnetic stator surrounding the rotor and defining axially-spaced annular cavities which extend circumferentially about and radially from the rotor, and axially-spaced annular ferromagnetic disks surrounding the rotor and mounted for rotation with the rotor. The disks are disposed in the stator cavities so as to define a pair of annular passages on opposite sides of each disk which are connected in flow communication with one another at inner and outer peripheries of the disk. An electrically conductive fluid occupies the passages and is capable of flowing along an endless path through the passages. A pair of electrodes mounted to the stator radially conduct a flow of electrical current through the fluid between the outer and inner peripheries of the disk. A field coil mounted to the stator generates a magnetic field in axial relation to the stator and disk and transversely across the fluid within the passages. Separate turbine stages disposed adjacent the outer and inner peripheries of the disk extend transversely across the endless path of fluid flow for causing transfer of momentum from the disk to the fluid in an electric generator operating mode of the turbomachine, for producing electrical power, or from the fluid to the disk in an electric motor operating mode of the turbomachine, for producing mechanical power.
REFERENCES:
patent: 2938000 (1961-06-01), Blake
patent: 3217190 (1965-11-01), McLafferty
patent: 3428836 (1969-02-01), Klein
patent: 4212592 (1980-07-01), Olich et al.
patent: 4463555 (1984-08-01), Wilcoxson
patent: 4687418 (1987-08-01), Gotou et al.
Rebsch Donald L.
Salce Patrick R.
Spadacene J. C.
Westinghouse Electric Corp.
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