Inventor
Allan B. Plunkett
Inventor
Scotia, NY, US
Overview
Patents· 25 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Pprimary
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters45%
B60LPropulsion of electrically-propelled vehicles13%
Y02TClimate change mitigation technologies related to transportation13%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems10%
H02KDynamo-electric machines5%
B61CLocomotives3%
E21BEarth or rock drilling3%
F04DNon-positive-displacement pumps3%
G01RMeasuring electric variables3%
H02JElectric power networks3%
PatentTitleYear
5,909,098'Downhole pumping system with variable speed pulse-width modulated inverter coupled to electrical motor via non-gap transformer'19995,844,397'Downhole pumping system with variable speed pulse width modulated inverter coupled to electrical motor via non-gap transformer'19984,928,043'Back EMF sampling circuit for phase locked loop motor control'19904,814,677'Field orientation control of a permanent magnet motor'19894,684,867'Regenerative unipolar converter for switched reluctance motors using one main switching device per phase'19874,578,610'Synchronous disk motor with amorphous metal stator and permanent magnet rotor and flywheel'19864,473,790'Control circuit for suppression of line resonances in current feedback pulse width modulation control systems with a minimum d-c filter'19844,377,779'Pulse width modulated inverter machine drive'19834,361,791'Apparatus for controlling a PWM inverter-permanent magnet synchronous motor drive'19824,321,478'Auxiliary power supply with kinetic energy storage'19824,320,331'Transistorized current controlled pulse width modulated inverter machine drive system'19824,258,302'Apparatus for maintaining synchronism of an inverter-synchronous machine drive system at light or zero machine loads'19814,255,695'Method and apparatus for control of inverter synchronous machine drive system'19814,245,181'Method and apparatus for generating an air gap flux signal for an AC machine from AC line voltage and current values'19814,215,305'Excitation commanding for current fed motor drives'19804,093,900'Dynamic brake blending for an inverter propulsion system'19784,090,119'Torque analog of a series wound DC traction motor'19784,088,934'Means for stabilizing an a-c electric motor drive system'19784,088,935'Stabilizing scheme for an a-c electric motor drive system'19784,075,538'Adaptive acceleration responsive system'19784,047,083'Adjustable speed A-C motor drive with smooth transition between operational modes and with reduced harmonic distortion'19774,044,285'Method and apparatus for controlling variable speed, controlled current induction motor drive systems'19774,044,284'Alternating current motor control method and system'19774,023,083'Torque regulating induction motor system'19774,011,489'Apparatus for regulating magnetic flux in an AC motor'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1989Patents assigned to GEN ELECTRIC (22)· patent assignee history
1977–1978Based in Erie, PA, US· patent location history
1978–1986Based in Scotia, NY, US· patent location history
1987–1990Based in Portland, OR, US· patent location history
1990Patents assigned to SYNEKTRON CORP (1)· patent assignee history
1998–1999Patents assigned to REDA PUMP (2)· patent assignee history
1998–1999Based in Sherwood, OR, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GEN ELECTRIC | 22 | 1977–1989 |
| REDA PUMP | 2 | 1998–1999 |
| SYNEKTRON CORP | 1 | 1990 |
Locations
| Location | Patents | Span |
|---|---|---|
| Scotia, New York, US | 14 | 1978–1986 |
| Erie, Pennsylvania, US | 6 | 1977–1978 |
| Portland, OR, US | 3 | 1987–1990 |
| Sherwood, OR, US | 2 | 1998–1999 |