US Patent No: 8,125,168
Number of patents in Portfolio can not be more than 2000
Motor having controllable torque
Stats
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Feb 28, 2012
Issued date -
Nov 19, 2007
filing date -
11/942,412
serial no -
In Force
status
Importance
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Abstract
A controllable motor includes a rotor. A first stator winding set is operable, upon being energized, to generate and apply a first torque to the rotor. A second stator winding set independent of the first stator winding set is operable, upon being energized, to generate and apply a second torque to the rotor. A motor control is coupled to the first and second stator winding sets. The motor control is operable to selectively energize one of the first or second stator winding sets to thereby generate and apply one of the first or second torques to the rotor, and simultaneously energize both the first and second stator winding sets to thereby generate and apply a third torque greater than the first or the second torque.
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First Claim
Related Publications
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International Classification(s)
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- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 6,630,804 Driving apparatus, power output apparatus, and control method | 26 | 2001 | |
| 6,956,341 Motor driving control device | 4 | 2003 | |
| 7,276,865 Power output apparatus, motor driving method and computer-readable recording medium having program recorded thereon for allowing computer to execute motor drive control | 6 | 2004 | |
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| 7,659,686 Motor-generator control system | 4 | 2007 | |
| 2007/0241,699 Motor-generator control system | 15 | 2007 | |
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| 6,229,241 Structure and manufacturing method for motor and stator | 18 | 1998 | |
| 7,439,697 Motor driving device and automobile using the same | 12 | 2006 | |
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| 4,663,581 Voltage regulated permanent magnet generator system | 29 | 1984 | |
| 5,955,809 Permanent magnet generator with auxiliary winding | 56 | 1994 | |
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| 5,053,689 Method and apparatus for improving performance of AC machines | 18 | 1989 | |
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| 7,868,573 Drive circuits | 1 | 2007 | |
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| 7,157,875 Method and system for fail-safe motor operation | 4 | 2005 | |
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| 5,811,905 Doubly-fed switched reluctance machine | 39 | 1997 | |
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| 6,531,799 Hybrid electric machine with two rotors, permanent magnet poles and controllable field current | 37 | 1999 | |
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| 5,365,153 AC variable speed driving apparatus and electric vehicle using the same | 40 | 1993 | |
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| 4,371,801 Method and apparatus for output regulation of multiple disk permanent magnet machines | 61 | 1981 | |
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| 5,705,909 Control for AC motor having parallel sets of three-phase windings with only one current sensor per set | 17 | 1995 | |
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| 5,099,186 Integrated motor drive and recharge system | 69 | 1990 | |
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| 6,573,672 Fail passive servo controller | 9 | 2001 | |
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| 5,723,930 Stators incorporating blank winding slots for a permanent magnet brushless motor and method of winding thereof | 9 | 1995 | |
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| 5,177,391 Power generating apparatus | 57 | 1992 | |
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| 5,929,549 Fault tolerant electric machine | 14 | 1998 | |
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| 6,815,920 Motor driver and system with phase-spaced redundancy | 7 | 2002 | |
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| 6,864,648 Vector flux machine | 5 | 2002 | |
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| 6,121,707 Electric motor and electric motor stator and method for making same | 6 | 1998 | |
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| 4,187,457 Polyphase electric motor having controlled magnetic flux density | 17 | 1977 | |
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| 6,242,884 Dual stator winding induction machine drive | 25 | 1999 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Aug 28, 2015 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Aug 28, 2019 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 28, 2023 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |