Demodulator of polyphase voltages interfering among themselves

Details Demodulator of polyphase voltages interfering among themselves Demodulator of polyphase voltages interfering among themselves

1979-04-27

1981-05-05

Budd, Mark O.

Electrical generator or motor structure

Dynamoelectric

Rotary

310114, 310127, 363152, H02K 3900

Patent

active

042661536

ABSTRACT:
A demodulator for the demodulation of polyphase, in particular triphase, voltages interfering among themselves and constituting a system of polyphase pseudo-sinusoidal voltages modulated in amplitude to a pulsation .epsilon., to obtain a system of polyphase voltages with a pulsation .epsilon.. The demodulator comprises a polyphase rotating machine including three 3-phase armatures connected through a common yoke made up of a low magnetic loss material, and fed by three systems of polyphase pseudo-sinusoidal voltages modulated in amplitude to a pulsation .epsilon.. A rotor freely rotates within the armature and includes three magnetic circuits connected through a common magnetic axle with the flux carrying parts of the rotor being a low loss magnetic material. Three static coils are disposed concentric with the axis of the magnetic rotor axle, and three systems of polyphase voltages of pulsation .epsilon. are collected at the respective terminals of the coils. The invention has application in particular to the realization of a generator of triphase voltages of a given pulsation .epsilon. from a machine rotating at a speed much higher than .epsilon..

REFERENCES:
patent: Re12223 (1904-05-01), Leblanc
patent: 1799156 (1931-04-01), Dornig
patent: 2120109 (1938-06-01), Merrill
patent: 2769106 (1956-10-01), Dembowski
patent: 3071703 (1963-01-01), Mathews
patent: 3956649 (1976-05-01), Silverman
patent: 4127802 (1978-11-01), Johnson

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