EP0506408A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Switched reluctance motor control circuit with energy recovery capability
Assignee: Honeywell Inc
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Filing: 1992-03-26
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Granted: —
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Expires: 2012-03-26
Abstract
Abstract A control circuit for a switched reluctance motor is provided with a connection between a second end (208;210) of each stator winding (A,B) and a first end (202;204) of an associated other winding, thereby to permit the flow of current from a phase winding (A) to an energy storage (216) device following the disconnection of the phase winding (A) from a primary power source. The inductive characteristic resists the immediate cessation of current flow following the opening of an associated switch (SA), that continued current flow passes to a capacitor (C₂), increasing voltage potential at the first end (204) of the other stator winding (B) and assisting the initiation of current flow through that stator winding (B).
Inventors
- 👤 William A. Harris
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 14:39
CPC Classifications
H; H02; H02P; H02P25/00; H02P25/02; H02P25/08; H02P25/086; H02P25/089
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
162 words
A control circuit for a switched reluctance dynamoelectric machine, characterised by: first means for connecting a first end of a first stator winding in electrical communication with a voltage source; second means for connecting a first end of a second stator winding in electrical communication with said voltage source; first means for alternately connecting and disconnecting a second end of said first stator winding to a ground potential; second means for alternatively connecting and disconnecting a second end of said second stator winding to said ground potential; first means for conducting an electrical current from said second end of said first stator winding to said first end of said second stator winding, said first conducting means providing continuous electical communication between said second end of said first stator winding and said first end of said second stator winding; and first means for storing a voltage potential at a circuit point in electrical communication with said first end of said second stator winding.
Claim 2
Dependent Claim
52 words
A control circuit according to Claim 1, characterised by: a first Zener diode connected in electrical communication between said first end of said first stator winding and said voltage source; and a second Zener diode connected in electrical communication between said first end of said second stator winding and said voltage source.
Claim 3
Dependent Claim
41 words
A control circuit according to Claim 1 or 2 characterised by: a first diode connected in electrical communication with said first conducting means between said second end of said first stator winding and said first end of said second stator winding.
Claim 4
Dependent Claim
97 words
A control circuit according to any preceding Claim, characterised by: third means for connecting a first end of a third stator winding in electrical communication with said voltage source; third means for alternately connecting and disconnecting a second end of said third stator winding to said ground potential; second means for conducing an electrical current from said second end of said second stator winding to said first end of said third stator winding; and second means for storing a voltage potential at a circuit point in electrical communication with said first end of said third stator winding.
Claim 5
Dependent Claim
59 words
A control circuit according to any preceding Claim, characterised by: third means for conducting an electrical current from said second end of said third stator winding to said first end of said first stator winding; and third means for storing a voltage potential at a circuit point in electrical communication with said first end of said first stator winding.
Claim 6
Dependent Claim
31 words
A control circuit according to any preceding Claim, characterised by: a third Zener diode connected in electrical communication between said first end of said third stator winding and said voltage source.
Claim 7
Dependent Claim
40 words
A control circuit according to any preceding Claim, characterised by: a second diode connected in electrical communication with said second conducting means between said second end of said second stator winding and said first end of said third stator winding.
Claim 8
Dependent Claim
40 words
A control circuit according to any preceding Claim, characterised by: a third diode connected in electrical communication with said third conducting means between said second end of said third stator winding and said first end of said first stator winding.
Claim 9
Dependent Claim
164 words
A circuit for controlling a switched reluctance motor, the circuit characterised by: a first connection point, said first connection point being connectable to a first terminus of a first stator winding; a second connection point, said second connection point being connectable to a second terminus of said first stator winding; a third connection point, said third connection point being connectable to a first terminus of a second stator winding; a fourth connection point, said fourth connection point being connectable to a second terminus of said second stator winding; first means for connecting said first and third connection points to a voltage source; second means for connecting and disconnecting said second connection point with a ground potential; third means for connecting and disconnecting said fourth connection point with said ground potential; and means for conducting an electrical current from said second connection point to said third connection point, said conducting means providing continuous electrical communication between said second connection point and said third connection point.
Claim 10
Dependent Claim
24 words
A circuit according to Claim 9, characterised by: means for storing a voltage potential, said storing means being connected to said third connection point.
Claim 11
Dependent Claim
39 words
A circuit according to Claim 9 or 10, characterised by: a first Zener diode connected between said first connection point and said voltage source; and a second Zener diode connected between said third connection point and said voltage source.
Claim 12
Dependent Claim
92 words
A circuit according to any of Claims 9 to 11, characterised by: a fifth connection point, said fifth connection point being connectable to a first terminus of a third stator winding; a sixth connection point, said sixth connection point being connectable to a second terminus of said third stator winding; fourth means for connecting said fifth connector point to said voltage source; fifth means for connecting and disconnecting said sixth connection point with said ground potential; means for conducting an electrical current from said fourth connection point to said fifth connection point.
Claim 13
Independent Claim
154 words
A method for controlling a switched reluctance dynamoelectric machine, said method characterised by: connecting a first end of a first stator winding in electrical communication with a voltage source; connecting a first end of a second stator winding in electrical communication with said voltage source; alternately connecting and disconnecting a second end of said first stator winding to a ground potential; alternatively connecting and disconnecting a second end of said second stator winding to said ground potential; conducting an electrical current from said second end of said first stator winding to said first end of said second stator winding by providing, in parallel with said voltage source, a continuous connection between said second end of said first stator winding and said first end of said second stator winding; and storing a voltage potential resulting from said electrical current at a circuit point in electrical communication with said first end of said second stator winding.
Claim 14
Dependent Claim
83 words
A method according to Claim 13 characterised by: connecting a first end of a third stator winding in electrical communication with said voltage source; alternately connecting and disconnecting a second end of said third stator winding to said ground potential; conducing an electrical current from said second end of said second stator winding to said first end of said third stator winding; and storing a voltage potential at a circuit point in electrical communication with said first end of said third stator winding.
Claim 15
Dependent Claim
53 words
A method according to Claim 13 or 14, characterised by: conducting an electrical current from said second end of said third stator winding to said first end of said first stator winding; and storing a voltage potential at a circuit point in electrical communication with said first end of said first stator winding.
Claim 16
Dependent Claim
33 words
A switched reluctance dynamoelectric machine characterised by a control circuit according to any one of Claims 1 to 12 and/or by operation of a method according to any of Claims 13 to 15.
References Cited (Backward Citations)
No citation records indexed.
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