Inventor

MARKUNAS ALBERT L

US41 patents

⚠️ This page may combine multiple inventors who share the name “MARKUNAS ALBERT L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MARKUNAS ALBERT L

SUNDSTRAND CORP

Starter/generator system with variable-frequency exciter control

Starter/generator system with DC link current control

Control for a brushless generator

Rotor position detector with back EMF voltage estimation

Rotor position detector

Engine starting system utilizing multiple controlled acceleration rates

Position and velocity sensorless control for a motor generator system operated as a motor using exciter impedance

Control for a brushless generator operable in generating and starting modes

Position-and-velocity sensorless control for starter generator electrical system using generator back-EMF voltage

Harmonic feedback control for an inverter

Hybrid 270 volt DC system

Aircraft turbine start from a low voltage battery

Compressor load control for an auxiliary power unit

Ram air turbine control system

Control valve

Brushless DC motor control

Method and apparatus for starting a synchronous machine

Starting control for an electromagnetic machine

Electric power generating system with active damping

Vapor cycle system with multiple evaporator load control and superheat control

Electro-hydraulic control system for a power drive unit

Harmonic control for an inverter by use of an objective function

Dual pump controls

Hydromechanical displacement control for a power drive unit

Hydromechanical control of differential pressure across a variable displacement hydraulic motor

HAMILTON SUNDSTRAND CORP

North-south pole determination for carrier injection sensorless position sensing systems

Brushless wound field synchronous machine rotor position tracking with exciter stator current harmonic tracking

Shaft sensorless angular position and velocity estimation for a dynamoelectric machine based on extended rotor flux

Carrier injection sensorless control of aircraft variable frequency wound field synchronous starter/generators

Rotor position detection at standstill and low speeds using a PMG to operate a wound field synchronous machine

Active damping for synchronous generator torsional oscillations

Active damping for synchronous generator torsional oscillations

Three phase flux switching generator in a three stage wound field synchronous machine

Rotor position detection at standstill and low speeds using a low power permanent magnet machine

Angular position and velocity estimation for synchronous machines based on extended rotor flux

MARKUNAS ALBERT L

Wound field synchronous machine rotor tracking using a carrier injection sensorless signal and exciter current

Torque oscillation monitoring

Synchronous disturbance suppression in a variable speed motor drive

Electric load damper for damping torsional oscillation

Sensorless rotor position determination for a wound field synchronous machine

SUNSTRAND CORP

Variable speed constant frequency start system with selectable input power limiting