EP0178615A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Power supply systems for inductive elements
Assignee: Kollmorgen Corp
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Filing: 1985-10-14
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Granted: —
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Expires: 2005-10-14
Abstract
Abstract In a power supply system, an inductance L is connected between a rail at a voltage V, and a rail at earth through a switch S. When the switch is opened, a current i 1 flowing from the inductance L is directed to a third rail through a diode D, voltage on the third rail rising to V 1 . The system may function as a dc to dc converter with an output voltage between the V 1 rail and the V 2 rail equal to V 2 -V 1 . The system may alternatively be used in, for example, a reluctance motor drive, in which case a further inductance with associated switch and diode is included in the circuit in inverse configuration to prevent excessive voltage rise on the third rail.
Inventors
- 👤 John V. Byrne
- 👤 Francis Dr. Mcmullin
- 👤 John Murphy
- 👤 Michael Egan
- 👤 Patrick Kenneally
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 07:31
CPC Classifications
H; H02; H02P; H02P25/00; H02P25/02; H02P25/08; H02P25/092; H02P25/0925
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
69 words
A power supply system having first (5) and second (6) rails energisable at differing potentials, between which an inductive element (1, 2, 3, 4) is switchingly connectible, and a third rail (15) to which current flow to or from said inductive element (1, 2, 3, 4) may be directed when the connection of said element (1, 2, 3, 4) between the first (5) and second (6) rails is broken.
Claim 2
Dependent Claim
69 words
A power supply system having first (5) and second (6) rails energisable at differing potentials, between which an inductive element (1, 2, 3, 4) is switchingly connectible, and a third rail (15) to which current flow to or from said inductive element (1, 2, 3, 4) may be directed when the connection of said element (1, 2, 3, 4) between the first (5) and second (6) rails is broken.
Claim 3
Dependent Claim
16 words
A dc (direct current) to dc converter comprising a power supply system according to claim 1.
Claim 4
Dependent Claim
222 words
A power supply system for at least one inductive element (1, 2, 3, 4), said system having first (5, 15) and second (6) rails energisable at differing potentials, between which said element (1, 2, 3, 4) is switchingly connectible, and a third rail (5, 15) to which current flow to or from said element (1, 2, 3, 4) may be directed when the connection of said element (1, 2, 3, 4) between the first (5, 15) and second (6) rails is broken, a further inductive element (16, 16a, 16b) being switchingly connectible between said third rail (15, 5) and one (6) of said first (5, 15) and second (6) rails, and the system also comprising means (17) for connecting said further element (16, 16a, 16b) between said third rail (15, 5) and said one (6) of the first (5, 15) and second (6) rails when the voltage on the third rail (15, 5) is equal to or greater than a predetermined value and means for facilitating said current flow between the further inductive element (16, 16a, 16b) and the other (5, 15) of said first (5, 15) and second (6) rails when the connection of said further element (16, 16a, 16b) between the third rail (15, 5) and said one (6) of the first (5, 15) and second (6) rails is broken.
Claim 5
Dependent Claim
222 words
A power supply system for at least one inductive element (1, 2, 3, 4), said system having first (5, 15) and second (6) rails energisable at differing potentials, between which said element (1, 2, 3, 4) is switchingly connectible, and a third rail (5, 15) to which current flow to or from said element (1, 2, 3, 4) may be directed when the connection of said element (1, 2, 3, 4) between the first (5, 15) and second (6) rails is broken, a further inductive element (16, 16a, 16b) being switchingly connectible between said third rail (15, 5) and one (6) of said first (5, 15) and second (6) rails, and the system also comprising means (17) for connecting said further element (16, 16a, 16b) between said third rail (15, 5) and said one (6) of the first (5, 15) and second (6) rails when the voltage on the third rail (15, 5) is equal to or greater than a predetermined value and means for facilitating said current flow between the further inductive element (16, 16a, 16b) and the other (5, 15) of said first (5, 15) and second (6) rails when the connection of said further element (16, 16a, 16b) between the third rail (15, 5) and said one (6) of the first (5, 15) and second (6) rails is broken.
Claim 6
Dependent Claim
103 words
A power supply system according to claim 3, wherein a resistive element (19, 19a, 19b) is also switchingly connectible between said third rail (15, 5) and said one (6) of the first (5, 15) and second (6) rails, and the system comprises means (20, 20a, 20b) for connecting said resistive element (19, 19a, 19b) between said third rail (15, 5) and said one (6) of the first (5, 15) and second (6) rails when the voltage between said third rail (15, 5) and said one of the first (5, 15) and second (6) rails is equal to or greater than a predetermined value.
Claim 7
Dependent Claim
22 words
A power supply system according to claim 1, comprising a plurality of said inductive elements connectible between said first and third rails.
Claim 8
Dependent Claim
48 words
A power supply system according to claim 1, wherein said inductive element has first and second coils, said first coil being connectible between said first and second rails and being isolated from said second coil, and said current flowing from said second coil when said connection is broken.
Claim 9
Dependent Claim
17 words
A dc to dc converter comprising a power supply system according to claim 5 or claim 6.
References Cited (Backward Citations)
No citation records indexed.
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