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Title: US4047094: MHD generator with improved network coupling electrodes to a load
[ Derwent Title ]


Country: US United States of America

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8 pages

 
Inventor: Rosa, Richard J.; Bozeman, MT

Assignee: The United States of America as represented by the United States Energy Research and Development Administration, Washington, DC
other patents from UNITED STATES OF AMERICA, DEPARTMENT OF ENERGY (597195) (approx. 6,712)
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Published / Filed: 1977-09-06 / 1976-07-22

Application Number: US1976000707925

IPC Code: Advanced: H02K 44/08;
Core: H02K 44/00;
IPC-7: H02N 4/02;

ECLA Code: H02K44/08;

U.S. Class: Current: 322/007; 310/011;
Original: 322/007; 310/011;

Field of Search: 310/011 322/007

Priority Number:
1976-07-22  US1976000707925

Abstract:     An MHD generator has a plurality of segmented electrodes extending longitudinally of a duct, whereby progressively increasing high DC voltages are derived from a set of cathode electrodes and progressively increasing low DC voltages are derived from a set of anode electrodes. First and second load terminals are respectively connected to the cathode and anode electrodes by separate coupling networks, each of which includes a number of SCR's and a number of diode rectifiers.

Attorney, Agent or Firm: Carlson, Dean E. ;

Primary / Asst. Examiners: Duggan, Donovan F.;

Family: None

First Claim:
Show all 8 claims
What is claimed is:     1. In combination with an MHD generator having a plurality of segmented electrodes extending longitudinally of a duct whereby progressively increasing high DC voltages are derived from a set of cathode electrodes of the generator and progressively increasing low DC voltages are derived from a set of anode electrodes of the generator, a first common terminal for the high voltage cathode electrodes, a second common terminal for the low voltage anode electrodes, said common terminals adapted to be normally maintained at predetermined voltages and to be connected across a load for the generator, a network for coupling one of said sets of electrodes to one of said terminals comprising: a controlled switch connected between a first electrode of the one set and said one common terminal, a rectifier connected between a second electrode of the one set and said one common terminal, said first and second electrodes having voltages on opposite sides of the voltage of said one common terminal, said rectifier being connected so that it is normally cut off by the voltage between the second electrode and said one common terminal, said switch being connected so that it is normally conductive between the first electrode and said one common terminal once it has been triggered into a conducting state in response to a control signal, and means for inductively coupling the switch and rectifier together so that the rectifier is biased into a conducting state in response to a change in the current flow through the switch.

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Description: Show description

Forward References: Show 5 U.S. patent(s) that reference this one

       
U.S. References: Go to Result Set: All U.S. references   |  Forward references (5)   |   Backward references (5)   |   Citation Link

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Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 4pp US3368089  1968-02 Klein   Magnetohydrodynamic generators with segmented electrodes
Get PDF - 8pp US3524086  1970-08 Lindley   MAGNETOHYDRODYNAMIC APPARATUS
Get PDF - 28pp US3792340  1974-07 Sheinkmar et al.   METHOD OF AND APPARATUS FOR CONTROLLING THE PERFORMANCE OF A D.C. MAGNETOHYDRODYNAMIC GENERATOR
Get PDF - 9pp US3940639  1976-02 Enos et al.  Avco Everett Research Laboratory, Inc. MHD generator with uniform voltage distribution
Get PDF - 8pp US3940640  1976-02 Petty et al.  Avco Everett Research Laboratory, Inc. MHD generator with uniform current distribution
       
Foreign References: None

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