US4870332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage-boosting motor controller
Assignee: XEBEC
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Filing: 1988-07-08
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Granted: 1989-09-26
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Expires: 2008-07-08
Abstract
Abstract A boosted power-supply voltage is developed by the combination of three power drivers, a filter capacitor, and a Y-connected motor. Each of the power drivers includes a pair of transistors connected in a totem-pole configuration with a clamping (catch) diode connected between the collector and the emitter of the upper transistor. Rather than a power-supply voltage source, only the filter capacitor is connected to the collectors of the upper transistors, a reduced-voltage level DC power-supply voltage-source being connected to the motor-winding-common node.
Inventors
- 👤 David S. Coghran
- 👤 Gean-Chung Hsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:11
CPC Classifications
H; H02; H02P; H02P6/00; H02P6/08; H02P6/085
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
236 words
A motor controller comprising in combination: a motor including, a first winding having a first end and a second end and a second winding having a first end connected to said first-winding-first end and a second end; a DC voltage source having a first end coupled to said first-winding-first end and a second end, said DC voltage source for powering said motor; a capacitor having a first end connected to said DC voltage-source-second end and a second end; commutating-signal-generating means; a first-power driver including, a first-switching means having a control means connected to said commutating-signal-generating means, a first-contact means connected to said capacitor-second end, and a second-contact means connected to said first-winding-second end, a first diode connected between said first-power-driver-first-switching-means-first-contact means and said first-power-driver-first-switching-means-second-contact means, and a second-switching means having a control means connected to said commutating-signal-generating means, a first-contact means connected to said first-power-driver-first-switching-means-second-contact means, and a second-contact means; a second-power driver including, a first-switching means having a control means connected to said commutating-signal-generating means, a first-contact means connected to said capacitor-second end, and a second-contact means connected to said second-winding-second end, a first diode connected between said second-power-driver-first-switching-means-first-contact means and said second-power-driver-first-switching-means-second-contact means, and a second-switching means having a control means connected to said commutating-signal-generating means, a first-contact means connected to said second-power-driver-first-switching-means-second-contact means, and a second-contact means connected to said first-power-driver-second-switching-means-second-contact means; and means coupling said first-power-driver-second-switching-means-second-contact means to said DC voltage-source-second end.
Claim 2
Dependent Claim
236 words
A motor controller comprising in combination: a motor including, a first winding having a first end and a second end and a second winding having a first end connected to said first-winding-first end and a second end; a DC voltage source having a first end coupled to said first-winding-first end and a second end, said DC voltage source for powering said motor; a capacitor having a first end connected to said DC voltage-source-second end and a second end; commutating-signal-generating means; a first-power driver including, a first-switching means having a control means connected to said commutating-signal-generating means, a first-contact means connected to said capacitor-second end, and a second-contact means connected to said first-winding-second end, a first diode connected between said first-power-driver-first-switching-means-first-contact means and said first-power-driver-first-switching-means-second-contact means, and a second-switching means having a control means connected to said commutating-signal-generating means, a first-contact means connected to said first-power-driver-first-switching-means-second-contact means, and a second-contact means; a second-power driver including, a first-switching means having a control means connected to said commutating-signal-generating means, a first-contact means connected to said capacitor-second end, and a second-contact means connected to said second-winding-second end, a first diode connected between said second-power-driver-first-switching-means-first-contact means and said second-power-driver-first-switching-means-second-contact means, and a second-switching means having a control means connected to said commutating-signal-generating means, a first-contact means connected to said second-power-driver-first-switching-means-second-contact means, and a second-contact means connected to said first-power-driver-second-switching-means-second-contact means; and means coupling said first-power-driver-second-switching-means-second-contact means to said DC voltage-source-second end.
Claim 3
Dependent Claim
47 words
A motor controller as recited in claim 1 wherein said first-power driver further includes a second diode connected between said first-power-driver-second-switching-means-first-contact means and said DC voltage-source-second end and wherein said second-power driver further includes a second diode connected between said second-power-driver-second-switching-means-first-contact means and said DC voltage-source-second end.
Claim 4
Dependent Claim
111 words
A motor controller as recited in claim 1 wherein said motor further includes a third winding having a first end connected to said first-winding-first end and a second end and wherein said motor controller further comprises a third-power driver including, a first-switching means having a control means connected to said commutating-signal-generating means, a first-contact means connected to said capacitor-second end, and a second-contact means connected to said third-winding-second end, a first diode connected between said third-power-driver-first-switching-means-first-contact means and said third-power-driver-first-switching-means-second-contact means, and a second-switching means having a control means connected to said commutating-signal-generating means, a first-contact means connected to said third-power-driver-first-switching-means-second-contact means, and a second-contact means connected to said first-power-driver-second-switching-means-second-contact means.
Claim 5
Dependent Claim
66 words
A motor controller as recited in claim 3 wherein said first-power driver further includes a second diode connected between said first-power-driver-second-switching-means-first-contact means and said DC voltage-source-second end, wherein said second-power driver further includes a second diode connected between said second-power-driver-second-switching-means-first-contact means and said DC voltage-source-second end, and wherein said third-power driver further includes a second diode connected between said third-power-driver-second-switching-means-first-contact means and said DC voltage-source-second end.
Claim 6
Dependent Claim
222 words
A motor controller comprising in combination: a motor including, a first winding having a first end and a second end and a second winding having a first end connected to said first-winding-first end and a second end; a DC voltage source having a first end coupled to said first-winding-first end and a second end, said DC voltage source for powering said motor; a capacitor having a first end connected to said DC voltage-source-second end and a second end; commutating-signal-generating means; a first-power driver including, a first transistor having a base connected to said commutating-signal-generating means, a collector connected to said capacitor-second end, and an emitter connected to said first-winding-second end, a first between said first-power-driver-first-transistor collector and said first-power-driver-first-transistor emitter, and a second transistor having a base connected to said commutating-signal-generating means, a collector connected to said first-power-driver-first-transistor emitter, and an emitter; a second-power driver including, a first transistor having a base connected to said commutating-signal-generating means, a collector connected to said capacitor-second end, and an emitter connected to said second-winding-second end, a first diode connected between said second-power-driver-first-transistor collector and said second-power-driver-first-transistor emitter, and a second transistor having a base connected to said commutating-signal-generating means, a collector connected to said second-power-driver-first-transistor emitter, and an emitter connected to said first-power-driver-second-transistor emitter; and means coupling said first-power-driver-second-transistor emitter to said DC voltage-source-second end.
Claim 7
Dependent Claim
222 words
A motor controller comprising in combination: a motor including, a first winding having a first end and a second end and a second winding having a first end connected to said first-winding-first end and a second end; a DC voltage source having a first end coupled to said first-winding-first end and a second end, said DC voltage source for powering said motor; a capacitor having a first end connected to said DC voltage-source-second end and a second end; commutating-signal-generating means; a first-power driver including, a first transistor having a base connected to said commutating-signal-generating means, a collector connected to said capacitor-second end, and an emitter connected to said first-winding-second end, a first between said first-power-driver-first-transistor collector and said first-power-driver-first-transistor emitter, and a second transistor having a base connected to said commutating-signal-generating means, a collector connected to said first-power-driver-first-transistor emitter, and an emitter; a second-power driver including, a first transistor having a base connected to said commutating-signal-generating means, a collector connected to said capacitor-second end, and an emitter connected to said second-winding-second end, a first diode connected between said second-power-driver-first-transistor collector and said second-power-driver-first-transistor emitter, and a second transistor having a base connected to said commutating-signal-generating means, a collector connected to said second-power-driver-first-transistor emitter, and an emitter connected to said first-power-driver-second-transistor emitter; and means coupling said first-power-driver-second-transistor emitter to said DC voltage-source-second end.
Claim 8
Dependent Claim
47 words
A motor controller as recited in claim 5 wherein said first-power driver further includes a second diode connected between said first-power-driver-second-transistor collector and said DC voltage-source-second end and wherein said second-power driver further includes a second diode connected between said second-power-driver-second-transistor collector and said DC voltage-source-second end.
Claim 9
Dependent Claim
105 words
A motor controller as recited in claim 5 wherein said motor further includes a third winding having a first end connected to said first-winding-first end and a second end and wherein said motor controller further comprises a third-power driver including, a first transistor having a base connected to said commutating-signal-generating means, a collector connected to said capacitor-second end, and an emitter connected to said third-winding-second end, a first diode connected between said third-power-driver-first-transistor collector and said third-power-driver-first-transistor emitter, and a second transistor having a base connected to said commutating-signal-generating means, a collector connected to said third-power-driver-first-transistor emitter, and an emitter connected to said first-power-driver-second-transistor emitter.
Claim 10
Dependent Claim
66 words
A motor controller as recited in claim 7 wherein said first-power driver further includes a second diode connected between said first-power-driver-second-transistor collector and said DC voltage-source-second end, wherein said second-power driver further includes a second diode connected between said second-power-driver-second-transistor collector and said DC voltage-source-second end, and wherein said third-power driver further includes a second diode connected between said third-power-driver-second-transistor collector and said DC voltage-source-second end.
Claim 11
Dependent Claim
66 words
A motor controller as recited in claim 8 wherein said commutating-signal-generating means includes decoder means having a first, a second, and a third input and wherein said motor further includes a first-Hall-effect device having an output connected to said decoder means first input, a second-Hall-effect device having an output connected to said decoder-means-second input, and a third-Hall-effect device having an output connected to said decoder-means-third input.
Claim 12
Dependent Claim
31 words
A motor controller as recited in claim 9 further comprising a resistor having a first end connected to said first-power-driver-second-transistor emitter and a second end connected to said DC voltage-source-second end.
Claim 13
Dependent Claim
22 words
A motor controller as recited in claim 10 further comprising a diode connected between sad DC voltage-source-first end and said first-winding-first end.
Claim 14
Dependent Claim
183 words
A motor controller comprising in combination: a motor including, a first winding having a first end and a second end, a second winding having a first end connected to said first-winding-first and a second end, a third winding having a first end connected to said first-winding-first end and a second end, a first-Hall-effect device having an output, a second-Hall-effect device having an output, and a third-Hall-effect device having an output; a DC voltage source having a first end coupled to said first-winding-first end and a second end, said DC voltage source for powering said motor; a capacitor having a first end connected to said DC voltage-source-second end and a second and; and a UC3602-type-controller device having, a first-power-driver output connected to said first-winding-second end, a second-power-driver output connected to said second-winding-second end, a third-power-driver output connected to said third-winding-second end, a first-decoder input connected to said first-Hall-effect-device output, a second-decoder input connected to said second-Hall-effect-device output, a third-decoder input connected to said third-Hall-effect-device output, a DC power-supply-voltage-source input connected to said capacitor-second end, and a feedback output coupled to said DC voltage-source-second end.
Claim 15
Dependent Claim
183 words
A motor controller comprising in combination: a motor including, a first winding having a first end and a second end, a second winding having a first end connected to said first-winding-first and a second end, a third winding having a first end connected to said first-winding-first end and a second end, a first-Hall-effect device having an output, a second-Hall-effect device having an output, and a third-Hall-effect device having an output; a DC voltage source having a first end coupled to said first-winding-first end and a second end, said DC voltage source for powering said motor; a capacitor having a first end connected to said DC voltage-source-second end and a second and; and a UC3602-type-controller device having, a first-power-driver output connected to said first-winding-second end, a second-power-driver output connected to said second-winding-second end, a third-power-driver output connected to said third-winding-second end, a first-decoder input connected to said first-Hall-effect-device output, a second-decoder input connected to said second-Hall-effect-device output, a third-decoder input connected to said third-Hall-effect-device output, a DC power-supply-voltage-source input connected to said capacitor-second end, and a feedback output coupled to said DC voltage-source-second end.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-25 | 1993-03-27 | 1993-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-25 | 1997-03-27 | 1997-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-25 | 2001-03-27 | 2001-09-26 | $7700.00 | Window Closed / Lapsed |