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US4742243A Expired / Lapsed US ⏱️ 0.0 years remaining

Power consolidation circuit using interrupted current techniques

Assignee: Individual
•
Filing: 1987-02-06
•
Granted: 1988-05-03
•
Expires: 2007-02-06
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Abstract

Abstract An electric circuit consolidates electric power from a number of power sources, having various voltage levels and connected to form a grid and delivers the power to a common load. This is accomplished by interposing switching elements in the connection or nodes between the terminals of the grid and the busbars that feed the load. These switches operate in a manner such that all the sources contribute to the output power. However, at any given time, only two nodes on the grid are connected to the load. Alternating current is derived from a direct current grid by using sets of switching elements to reverse polarity of the voltage supplied to the load.

Inventors

  • 👤 Zivan Zabar
  • 👤 Howard M. Abramowitz

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 16:10
CPC Classifications
H; H02; H02K; H02K44/00; H02K44/08; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/285

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 303 words
A power consolidation circuit for consolidating power from a MHD (Magneto Hydrodynamic) channel, comprising: a plurality of pairs of electrical nodes, each pair of nodes including a first node of a first electrical polarity and a second node of a second electrical polarity, said pairs of nodes being spaced along said MHD channel, a plurality of vertical sources and a plurality of horizontal sources, representing respectively Faraday and Hall voltages associated with said MHD channel, each respective one of said vertical sources extending between a respective pair of said pairs of nodes and a respective one of said horizontal sources extending between adjacent ones of said first nodes or adjacent ones of said second nodes, said MHD channel being of the type in which interconnection of said first nodes to one another or said second nodes to one another produces undesired internal short circuit currents within said MHD channel; first and second power bus bars; a first group of normally open switches, each one of said switches in said first group of switches extending between a respective one of said first nodes and said first power bus bar; a second group of normally open switches, each one of said switches in said second group of switches extending between a respective one of said second nodes and said second power bus bar; and said normally open switches being turned on in pairs and sequentially following one another in repeated cycles so that electrical power is derived from said MHD channel in sequence and cyclically through said pairs of nodes, in a manner such that power flows discontinuously from any one of said pairs of nodes and only during a predetermined fraction of a cycle period asociated with said MHD channel at the end of which cycle all said switches will have been turned on.
Claim 2
Dependent Claim 303 words
A power consolidation circuit for consolidating power from a MHD (Magneto Hydrodynamic) channel, comprising: a plurality of pairs of electrical nodes, each pair of nodes including a first node of a first electrical polarity and a second node of a second electrical polarity, said pairs of nodes being spaced along said MHD channel, a plurality of vertical sources and a plurality of horizontal sources, representing respectively Faraday and Hall voltages associated with said MHD channel, each respective one of said vertical sources extending between a respective pair of said pairs of nodes and a respective one of said horizontal sources extending between adjacent ones of said first nodes or adjacent ones of said second nodes, said MHD channel being of the type in which interconnection of said first nodes to one another or said second nodes to one another produces undesired internal short circuit currents within said MHD channel; first and second power bus bars; a first group of normally open switches, each one of said switches in said first group of switches extending between a respective one of said first nodes and said first power bus bar; a second group of normally open switches, each one of said switches in said second group of switches extending between a respective one of said second nodes and said second power bus bar; and said normally open switches being turned on in pairs and sequentially following one another in repeated cycles so that electrical power is derived from said MHD channel in sequence and cyclically through said pairs of nodes, in a manner such that power flows discontinuously from any one of said pairs of nodes and only during a predetermined fraction of a cycle period asociated with said MHD channel at the end of which cycle all said switches will have been turned on.
Claim 3
Dependent Claim 31 words
A power consolidation circuit as in claim 1, in which each pair of said switches is turned on only after a previously turned on pair of switches has fully turned off.

References Cited (Backward Citations)

US3493777A Cited
US3769571A Cited
US4101787A Cited
SU610242A1 Cited
US4175249A Cited
US4297590A Cited
US4456833A Cited
US4476520A Cited
US4591965A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1991-05-03 1991-11-02 1992-05-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-05-03 1995-11-02 1996-05-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-05-03 1999-11-02 2000-05-03 $7700.00 Window Closed / Lapsed

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