Inventor
Albert L. Markunas
Inventor
Roscoe, IL, US
Overview
Patents· 41 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 converters39%
F02NStarting of combustion engines15%
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 systems6%
F02CGas-turbine plants4%
H02KDynamo-electric machines4%
F03CPositive-displacement engines driven by liquids3%
F05BIndexing scheme relating to wind, spring, weight, inertia or like motors, to machines or engines for liquids covered by subclasses f03b, f03d and f03g3%
F16HGearing3%
H02JElectric power networks3%
Y02TClimate change mitigation technologies related to transportation3%
PatentTitleYear
9,543,876'Three phase flux switching generator in a three stage wound field synchronous machine'20179,374,027'Sensorless rotor position determination for a wound field synchronous machine'20168,593,095'Wound field synchronous machine rotor tracking using a carrier injection sensorless signal and exciter current'20138,362,728'Rotor position detection at standstill and low speeds using a PMG to operate a wound field synchronous machine'20138,217,630'Electric load damper for damping torsional oscillation'20128,169,172'Synchronous disturbance suppression in a variable speed motor drive'20128,056,417'Torque oscillation monitoring'20117,884,581'Active damping for synchronous generator torsional oscillations'20117,808,215'Active damping for synchronous generator torsional oscillations'20107,583,046'Rotor position detection at standstill and low speeds using a low power permanent magnet machine'20097,265,507'Angular position and velocity estimation for synchronous machines based on extended rotor flux'20077,132,816'Brushless wound field synchronous machine rotor position tracking with exciter stator current harmonic tracking'20067,072,790'Shaft sensorless angular position and velocity estimation for a dynamoelectric machine based on extended rotor flux'20067,034,497'Carrier injection sensorless control of aircraft variable frequency wound field synchronous starter/generators'20066,967,461'North-south pole determination for carrier injection sensorless position sensing systems'20055,747,971'Position and velocity sensorless control for a motor generator system operated as a motor using exciter impedance'19985,594,322'Starter/generator system with variable-frequency exciter control'19975,581,168'Starter/generator system with DC link current control'19965,495,163'Control for a brushless generator operable in generating and starting modes'19965,495,162'Position-and-velocity sensorless control for starter generator electrical system using generator back-EMF voltage'19965,493,200'Control for a brushless generator'19965,488,286'Method and apparatus for starting a synchronous machine'19965,461,293'Rotor position detector'19955,444,349'Starting control for an electromagnetic machine'19955,430,362'Engine starting system utilizing multiple controlled acceleration rates'19955,384,527'Rotor position detector with back EMF voltage estimation'19955,383,107'Harmonic control for an inverter by use of an objective function'19955,327,335'Harmonic feedback control for an inverter'19945,233,286'Hybrid 270 volt DC system'19935,132,894'Electric power generating system with active damping'19925,065,577'Hydromechanical displacement control for a power drive unit'19915,062,265'Hydromechanical control of differential pressure across a variable displacement hydraulic motor'19915,036,267'Aircraft turbine start from a low voltage battery'19915,007,245'Vapor cycle system with multiple evaporator load control and superheat control'19914,949,021'Variable speed constant frequency start system with selectable input power limiting'19904,751,438'Brushless DC motor control'19884,743,163'Ram air turbine control system'19884,617,958'Control valve'19864,591,317'Dual pump controls'19864,487,109'Electro-hydraulic control system for a power drive unit'19844,370,560'Compressor load control for an auxiliary power unit'1983Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1983–1998Patents assigned to SUNDSTRAND CORP (25)· patent assignee history
1983–2017Based in Roscoe, IL, US· patent location history
1984Based in Rockford, IL, US· patent location history
2005–2017Patents assigned to HAMILTON SUNDSTRAND CORP (15)· patent assignee history
2011–2016Patents assigned to MARKUNAS ALBERT L (6)· patent assignee history
2012Patents assigned to BAKER DONAL E (1)· patent assignee history
2013Patents assigned to PATEL DHAVAL (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SUNDSTRAND CORP | 25 | 1983–1998 |
| HAMILTON SUNDSTRAND CORP | 15 | 2005–2017 |
| MARKUNAS ALBERT Lself | 6 | 2011–2016 |
| PATEL DHAVAL | 2 | 2013 |
| BAKER DONAL E | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Roscoe, Illinois, US | 40 | 1983–2017 |
| Rockford, Illinois, US | 1 | 1984 |