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Class 290/46 - STARTING AND GENERATING DYNAMO


Subclass of Class 290 - Prime-mover dynamo plants
Definition: Prime-mover dynamo plants including a dynamo electric machine
No. of patents: 159
Last issue date: 05/01/2012


1        
NumberTitleIssue Date
8169100Torque transmission for an aircraft engine
The torque transmission system for an aircraft engine permits a starter-generator to drive the engine on starting at a speed reducing ratio. Once the engine is running, the engine then drives the starter-generator also at a speed reducing ratio. ...
05/01/2012
7400056Engine starter-generator optimized for start function
A starter-generator system is configured to supply power to an aircraft electrical bus having a rated AC voltage magnitude, or receive power from a start converter, and includes a rotor and a stator. The stator is disposed at least partially around at least a portio...
07/15/2008
7367302Method and device for switching on a power switch arranged between capacitive elements
The invention relates to a method and a device for switching on a power switch (S1, S2) arranged between capacitive elements (C1, DLC, B36) a choke (L) being connected in parallel to the switching contacts of the still open power switch (...
05/06/2008
7353895Vehicle transmission with selectively-engageable electric motor
A vehicle having a transmission for transmitting a torque from a drive machine to drive wheels, with the transmission having an transmission output shaft and a transmission input shaft, in which the torque can be transmitted from the drive machine to the transmissio...
04/08/2008
7329960System and method for propelling a large land-based vehicle using a dual function brushless dynamoelectric machine
A propulsion system for a relatively large land-based vehicle, such as a locomotive or off-highway vehicle, is provided. The system may include a brushless dynamoelectric machine made up of a main alternator having a main rotor and a main stator, and an auxiliary al...
02/12/2008
7316628Two speed transmission and belt drive system
A two speed transmission comprising a planetary gear train comprising an input member connected to an input carrier, the input carrier connected to an input shaft, a sun gear and a ring gear, the input carrier comprising a plurality of planetary members each in mesh...
01/08/2008
7301310Excitation controlled synchronous permanent magnet machine
The present invention provides an apparatus and methods for providing constant voltage from a permanent magnet generator at varying prime mover speeds or under varying loads. A constant voltage permanent magnet generator includes a housing, a magnetized rotor, a pri...
11/27/2007
7292003Starter/generator with permanent magnet generator position indicator
A motor control system for a wound field synchronous dynamoelectric machine used as an electrical starter and a generator for aeronautical engines that uses its integral auxiliary permanent magnet generator as an angular position sensor in its starting mode. ...
11/06/2007
7281442Planetary gear reduction mechanism in particular for motor vehicle starter and starter equipped with same
A reduction gearbox with an epicyclic gear train is provided for a motor vehicle starter. This gearbox includes a crown (30) comprising a outer crown part (31) and an inner crown part (32) carrying an internal set of teeth (33) together w...
10/16/2007
7271500Electrical rotating machine control unit and power generation system
Because of the necessity of resolver for detecting a rotating position, which is very expensive, and noise suppression of the rotating position signal line on a doubly-fed machine, cost increase of the generator and reduced reliability due to possible failures are i...
09/18/2007
7268522Excitation control for wound field synchronous dynamoelectric machines
A wound field synchronous (WFS) dynamoelectric machine comprises: a rotor assembly; an exciter generator section comprising a stationary multiphase exciter stator winding for receiving excitation power from a multiphase alternating current (AC) source to generate an...
09/11/2007
7253535Electrical starter generator system for a gas turbine engine
A starting system and method for a gas turbine engine applies a change in conventional starter generator torque profiles near the conclusion of the start cycle after the engine self sustaining speed and just prior to starter generator cut-out. By decreasing the appl...
08/07/2007
7240751Dual rotor motor for a hybrid vehicle transmission
A hybrid electric vehicle powertrain has an engine and a motor at the torque input side of a power transmission. The motor has a single stator and dual rotors. A selectively engageable rotor clutch connects the rotors together for torque delivery during a driving mo...
07/10/2007
7230358Electrical resonance circuits for high efficiency direct current motors
Practically ideal electrical resonance is employed to soley provide armature power, and stator power if desired, to run DC motors. A practically ideal parallel resonant tank circuit (PIPRC) is used wherein the quotient of the “tank current” divided by the “lin...
06/12/2007
7227271Method and apparatus for controlling an engine start system
An apparatus (80) controls a synchronous machine (20) used to start an engine (300) during an engine start operation. The apparatus comprises: an exciter current control unit (84) for controlling exciter current output to the synchronous ...
06/05/2007
7224146Dual voltage electrical system
A dual voltage supply system supplies high and low voltage electrical power to separate high and low voltage loads. The system includes an AC alternator and first and second rectifier circuits, each connected to the alternator and a corresponding high and low voltag...
05/29/2007
7211989Method for acceleration of a shaft run, as well as an apparatus for carrying out the method
A method for acceleration of a shaft run that a turbine, in particular a gas turbine, a generator and an excitation machine connected to one another by a common shaft, includes accelerating the turbine is accelerated using acceleration apparatus during a starting pr...
05/01/2007
7194925Starter
A shock absorbing device 8 includes a transmitting section 81, first friction plates 82, second friction plates 83, and a dish spring 84. The transmitting section 81 is engaged with the inner cylindrical portion of the secon...
03/27/2007
7191856Power transmission system for hybrid vehicle
A power transmission system for a hybrid vehicle includes a motor/generator and a torque converter. The motor/generator and the torque converter are disposed in series between a crankshaft of an engine and a main shaft of a transmission. A side plate of the torque c...
03/20/2007
7183750Vehicle power-generation control unit and vehicle power-generation control system
The vehicle power-generation control unit has a first function enabled when a control signal received from outside designates a first mode to control an exciting current such that an output power of a vehicle generator is kept at a value specified by the control sig...
02/27/2007
7180200Starter system for portable internal combustion engine electric generators using a portable universal battery pack
A generator starting system utilizes a portable universal battery pack to start an internal combustion engine of the generator. The system is adapted to utilize any one of a plurality of universal battery packs having outputs of varying voltage. The generator can in...
02/20/2007
7170263Method and apparatus for controlling on-vehicle generator
An apparatus for controlling an on-vehicle generator is provided. The apparatus comprises a switching element, current detecting unit, setting unit and driving unit. The switching unit turns on/off an exciting current to an exciting winding of the generator, the swi...
01/30/2007
7170261Generator with dual cycloconverter for 120/240 VAC operation
A generator system has two modes of operation, such as 120 VAC and 240/120 VAC. The generator system has a permanent magnet generator with two independent sets of windings that each generate a three phase AC voltage. One three phase AC voltage is coupled to a first ...
01/30/2007
7150333Vehicle control apparatus and method
A controller is provided for implementing a line pressure control for controlling a line pressure for an automatic transmission and a motor assist control for controlling an assist amount by an electric generator when an engine is put into an automatically restarted...
12/19/2006
7148594Axial gap electrical machine
An axial gap electrical machine employs unique architecture to (1) overcome critical limits in the air gap at high speeds, while maintaining high torque performance at low speeds, while synergistically providing a geometry that withstands meets critical force concen...
12/12/2006
7135829Methods and apparatus for controlling a motor/generator
Methods and apparatus provide for commutating windings of a polyphase machine such that electromagnetic fields of stator and rotor phases of the polyphase machine produce at least one of motoring and generating torque, wherein the controller is operable to automatic...
11/14/2006
7128061Supercharger
A centrifugal supercharger is provided. One embodiment of the supercharger comprises a two-piece housing wherein a parting area is substantially aligned with a rotational axis of a drive- or impeller shaft. Another embodiment comprises a sleeve, or intermediate memb...
10/31/2006
7129595Hybrid electro-mechanical vehicular transmission having multiple modular motor/generators assembled from like components
An improved hybrid electro-mechanical vehicular transmission includes motor/generator modules assembled from like components. This is accomplished by providing “punch-out” tabs on the motor/generator module housing enabling the housing to be used on either the f...
10/31/2006
7119471Direct drive high torque compact synchronous motor
A synchronous motor includes a housing 20, a stator assembly 30 mounted within the housing 20, a rotor assembly 40 rotationally mounted within the housing 20, a rotor shaft 50 having an upper mounting surface 52 attac...
10/10/2006
7116003Aircraft starter/generator electrical system with mixed power architecture
A starter/generator electrical system for gas turbine powered aircraft with mixed power architecture to combine advantages of each. The mixed power architecture may be selected from constant frequency (CF), adjustable variable frequency (AVF) and narrow range variab...
10/03/2006
7104765Hybrid compressor system
The present invention provides a hybrid compressor system in which its configuration is simplified, its cost and size are reduced, and its reliability is enhanced. In the hybrid compressor system which selectively transmits a driving force of an engine and a driving...
09/12/2006
7105937Adjustable variable frequency starter/generator system
A starter/generator system for a gas turbine engine used in aeronautical applications that couples a single dynamoelectric machine to the gas turbine engine through a torque converter in a starting mode, and then disengages the torque converter and engages the engin...
09/12/2006
7102331Generator with dual cycloconverter for 120/240 VAC operation
A generator system in accordance with the invention has two modes of operation, such as 120 VAC and 240/120 VAC modes of operation. The generator system has a permanent magnet generator with two independent sets of windings that each generate a three phase AC voltag...
09/05/2006
7095243AC generator exciter rotor slip-ring test apparatus
A test apparatus assembly is provided for testing an AC generator having an exciter rotor mounted to a shaft. The apparatus includes an annular end bell, a carbon brush assembly coupled to the end bell including a housing coupled to the end bell inner peripheral sur...
08/22/2006
7081735System and method for bypassing a motor drive
A motor control system comprising a plurality of motor controllers and a power source adapted to drive an electric motor. The motor control system comprises a switch that is selectively operable between at least a first position and a second position. In the first p...
07/25/2006
7078826Hybrid gas turbine engine starter-generator
A rotating electrical machine, such as an aircraft starter-generator, that may be operated in either a DC motor mode or an AC generator mode. The machine includes a conventionally wound main stator that is selectively configurable as a multi-pole AC stator and a mul...
07/18/2006
7071656Torque computation unit for vehicle generator
A torque computation unit of a vehicle generator includes a rotor, an armature winding, a field coil and a field current switching element. The torque computation unit includes a field current detecting circuit, an output current detecting circuit and a rotation spe...
07/04/2006
7053497Monitoring system for a generator
A load monitoring apparatus for monitoring the load applied to a portable generator. The apparatus includes a sensor, and a humanly perceptible indicator that indicates at least one discontinuous load power frequency. ...
05/30/2006
7045913Microturbine engine system
A microturbine engine that includes a compressor that is operable to provide a flow of compressed air. The compressed air flows through a recuperator where it is preheated before delivery to a combustor. The preheated compressed air mixes with a fuel and is combuste...
05/16/2006
7018314Engine starter with impact absorber
An engine starter equipped with an impact absorber. The impact absorber is arranged between a planetary gear train and an overrunning clutch of the starter. The absorber includes a friction plate which is disposed between a clutch outer and a carrier plate of the ov...
03/28/2006
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