Matches 1 - 18 out of 18
Match Document Document Title
7345457 Brushless exciters using a high temperature superconducting field winding  
A brushless exciter for a synchronous generator or motor generally includes a stator and a rotor rotatably disposed within the stator. The rotor has a field winding and a voltage rectifying bridge...
6960900 Method and apparatus for starting a gas turbine using a polyphase electric power generator  
A method to start a combined unit gas turbine and electrical unit having a static start drive including the steps of: applying a variable frequency voltage from the static start drive to a winding...
6909263 Gas turbine engine starter-generator exciter starting system and method including a capacitance circuit element  
A rotating electrical machine, such as an aircraft starter-generator, that includes an exciter that has its stator windings supplied with electrical power from a power supply. One or more switches...
6876096 Electrical power generation unit  
The invention provides a power generation unit ( 100 ) having a generator ( 8 ) driven from shaft ( 112 ) and which has a transformer ( 24 ) connected to its output terminals for transforming the...
6850043 Excessive voltage protector for a variable frequency generating system  
An excessive voltage protection system for a variable frequency generating system detects single point failures in a generator control unit and prevents excessive voltages at a point of regulation...
6762512 Methods for starting a combustion turbine and combustion turbine generator configured to implement same methods  
A method for starting a combustion turbine generator 10 includes configuring the generator so that the generator's rotor 16 is connected to receive all DC electrical power from the armature 30...
6590298 Electrical power generation unit for welding including electromechanical feedback mode regulation  
The invention provides a method of providing a substantially stable supply of electrical energy under loading conditions. The method includes the steps of: 1. connecting a first generator...
6504261 Synchronous generator having auxiliary power windings and variable frequency power source and method for use  
A synchronous generator is disclosed having main power windings and auxiliary power windings, where the auxiliary power winding is coupled to a variable frequency drive system. The variable...
6500316 Apparatus for rotary cathode electroplating with wireless power transfer  
An apparatus for rotary cathode electroplating having a head assembly, a substrate/thief assembly having a thieving ring which includes a number of individually chargeable segments, and a secondary...
6486640 Control system for variable frequency generator  
Disclosed is a control system for a variable frequency generator including a main stator winding for providing a generator output, excited by a main rotor winding, and a main exciter rotor winding...
6333622 Synchronous generator having auxiliary power windings and variable frequency power source  
A synchronous generator is disclosed having main power windings and auxiliary power windings, where the auxiliary power winding is coupled to a variable frequency drive system. The variable...
5521444 Apparatus for transferring electrical power from a stationary device to a rotating device without the use of brushes or contacts  
A device for transferring electrical power from a stationary member to a rotatable member is provided by incorporating an air core transformer of which a first coil is rigidly attached to the...
5453901 Detection and protection of excitation system from diode failure  
Loss of excitation and control and subsequent damage to exciter windings in an excitation system for dynamoelectric machines wherein one or more rotating diodes fail in a shorted mode is prevented...
4622629 Power supply system with improved transient response  
An apparatus for improving the transient response of a power supply system having an alternator for developing AC power and a rectifier for converting the alternator output into primary DC power...
4609868 Circuit for detecting the failure of a step motor to respond to energization commands  
A circuit for detecting the failure of a step motor to respond to energization commands, which takes advantage of the time constant decrease of an energized phase which occurs due to stalling of...
4467267 Alternator excitation system  
An excitation system for a brushless synchronous alternator includes an exciter having a stator which includes first and second sets of field coils respectively coupled to a source of DC power and...
4426613 Control system for a self-excited alternating current generator  
A control circuit for a self-excited AC generator including an automatic voltage regulator, a fly-wheel capacitor which is charged normally by part of the generator output during a no-load...
4424478 Device for exciting master generator of self-contained power units for transportation facilities  
A device for exciting a master generator of self-contained power units for transportation facilities comprises a master generator with a first excitation winding, an auxiliary exciter generator...
Matches 1 - 18 out of 18