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| Number | Title | Issue Date |
| 8106633 | Generator set control system A control system is provided for use with a plurality of generator sets. The control system may have a bus, an arbitration relay, a switching device, a control module, and first, second, and third discrete signal cables. The control module may be configured to recei... | 01/31/2012 |
| 7675271 | System for generating electrical power Described is a system for generating electrical power, which system includes a turbine that is mechanically connected to a generator, which in turn is connected via a multiphase transformer to a load. In at least one embodiment, at least two counter-connected switch... | 03/09/2010 |
| 7541784 | Dual voltage switching in power generation A system and method for switching from one voltage to another voltage are disclosed. The system relates to an induction generator or motor that switches between a first voltage and a second voltage. The method comprises transitioning between two or more voltage leve... | 06/02/2009 |
| 7439713 | Modulation control of power generation system Methods and apparatuses are disclosed for producing current with a desired output frequency from one or more fixed or variable speed alternators by varying a saturation level of a portion of the alternator(s) based on a output frequency desired, and preferably then ... | 10/21/2008 |
| 7405542 | Generator synchronization method on a common drive source and apparatus therefor A system that selectively alters a phase angle of an electrical generator. The system has a powered input shaft for transmitting power and an output shaft for receiving power for delivery to the electrical generator. A coupler portion interconnects the input shaft w... | 07/29/2008 |
| 7372185 | High-intensity discharge lighting system and alternator power supply A high intensity lighting system comprises a plurality of high intensity discharge lamps electrically connected to a polyphase alternator and a prime mover mechanically connected to the alternator. An inherent impedance characteristic of the alternator permits the l... | 05/13/2008 |
| 7365519 | Excitation system having inner loop voltage regulator with by-pass capability An excitation system that includes an exciter for generating a field voltage for a rotor, a first automatic voltage regulator and a second automatic voltage regulator. The first regulator receives an output voltage of the power generation system as an input, and the... | 04/29/2008 |
| 7355367 | System and method for AC power generation from a reluctance machine A system and method is provided for generating AC power using a synchronous reluctance machine (12) or a salient-pole synchronous machine (102) and a power converter (110). The present invention can be used to achieve power production for a sync... | 04/08/2008 |
| 7309974 | System and method for AC power generation from a reluctance machine A system and method is provided for generating AC power using a synchronous reluctance machine (12) or a salient-pole synchronous machine (102) and a power converter (110). The present invention can be used to achieve power production for a sync... | 12/18/2007 |
| 7307403 | System and method for DC power generation from a reluctance machine A system and method is provided for generating DC power using a synchronous reluctance machine (12) or a salient-pole synchronous machine (102) and a power converter (110). The present invention can be used to achieve power production for a sync... | 12/11/2007 |
| 7304445 | Locomotive power train architecture The present invention is directed to a power control architecture for a vehicle, particularly a locomotive, in which a number of energy sources are connected to a common electrical bus and selectively provide energy to the bus based on the relationship between their... | 12/04/2007 |
| 7301309 | Method and device for providing the supply voltage for the loads of a vehicle on-board electrical system, using a plurality of generators A method and a device for providing the supply voltage for the loads of a vehicle on-board electrical system, using a plurality of generators. A regulator unit having at least one output stage transistor is allocated to each of the generators. The output stage trans... | 11/27/2007 |
| 7292007 | Vehicular electric generation control apparatus and related method of detecting electric generation status A control apparatus controls the generation of a vehicle electric generator having an armature winding, excitation winding and rectifier connected to the armature winding. The apparatus includes a flywheel diode connected to the excitation winding in parallel, a swi... | 11/06/2007 |
| 7291933 | Double alternator and electrical system for a vehicle A double alternator for a vehicle and a vehicle electrical system employing the double alternator. ... | 11/06/2007 |
| 7271570 | Active rectification of alternator output without using a position sensor Disclosed herein is an automotive electrical system including a FET based rectifier and method of controlling the FET based rectifier without using either an alternator shaft position sensor or current sensors on each phase of the alternator output to control the sw... | 09/18/2007 |
| 7254465 | No-break-power-transfer control system for variable frequency electrical power systems A method and apparatus for executing a no-break power transfer between an electrical power generator powered by an auxiliary power unit (APU) and an electrical power generator powered by an aircraft main engine. The method comprises sending a power transfer command,... | 08/07/2007 |
| 7246782 | Apparatus and method for a temporary spread footing An apparatus and method for providing a temporary spread footing for supporting a variety of different vertically extending structures. The apparatus includes a frame with a top and bottom. The frame can have a substantial space or void in between the top and bottom... | 07/24/2007 |
| 7242166 | Electric machine A method and an apparatus are described for monitoring a rotating synchronous electric machine (9), which comprises a rotor winding and a stator having a stator winding. The method comprises the steps of determining the stator winding current, determining the... | 07/10/2007 |
| 7227340 | Alternator rectifier with coil-sensor controlled MOSFETs A switching circuit for an electric machine is provided. The switching circuit includes switches for energizing the phase windings of the machine and sensors for driving the state of the switches. The switches are voltage-controlled devices and the sensors are coils... | 06/05/2007 |
| 7224146 | Dual 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 |
| 7215100 | Generator transient regulator An apparatus for regulating a transient response of an output signal of an electrical generator. The apparatus comprises a tapped output winding means for providing a first AC signal and a second AC signal. The first and second AC signals have respective RMS values.... | 05/08/2007 |
| 7196497 | Vehicle-mounted electrical generating system in which field current of electric generator supplying power to high-voltage system is derived from supply voltage of low-voltage system A vehicle-mounted electrical generating system has a first voltage system which operates from a high supply voltage and a second voltage system which operates from a low supply voltage that is substantially constant, and an electrical generator for supplying power t... | 03/27/2007 |
| 7183668 | Generator with current and voltage abnormality detection A detecting means easily detects the abnormality of a generator having a plurality of power supply units. Each of the power supply units includes one of a plurality of output windings L1 to L4, which are wound independently of each other around single ... | 02/27/2007 |
| 7183749 | Vehicle generator control system A generator control system of a vehicle generator includes a switching element which turns on or off field current, a field current detecting circuit, a calculating circuit which calculates an average value of the field current when the switching element turns on ac... | 02/27/2007 |
| 7180216 | High-intensity discharge lighting system and alternator power supply A high intensity lighting system comprises a plurality of high intensity discharge lamps electrically connected to a polyphase alternator and a prime mover mechanically connected to the alternator. An inherent impedance characteristic of the alternator permits the l... | 02/20/2007 |
| 7176658 | Controller for permanent magnet alternator The invention is a control system that, among other things, controls a permanent magnet alternator and provides relatively accurate voltage regulation. The control system may include one or more of the following: (1) a rectification system to rectify and regulate th... | 02/13/2007 |
| 7170261 | Generator 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 |
| 7161328 | Controller of alternator for vehicle An alternator 1 connected to a battery mounted in a vehicle, a regulator 20 including a regulator IC 4 for adjusting a power generation voltage of the alternator 1, and an ECU connected to the regulator 20 are provided. A DF signal... | 01/09/2007 |
| 7161330 | Energy discharge apparatus There is provided an energy discharge apparatus for dissipating a quantity of stored magnetic energy in a generator field coil of a brushless generator. The apparatus includes an exciter regulator responsive to an output signal of the generator and which provides an... | 01/09/2007 |
| 7161329 | Generator controlling system The operation of a generator and the loads placed on the generator are controlled in response to measuring the loads and generator operating parameters and controllably altering the operating conditions in response to comparison of the measurements to respective set... | 01/09/2007 |
| 7122993 | Regulated voltage control override Apparatus and methods are provided for controlling a voltage output of an alternator having a regulated voltage control (RVC). The apparatus includes a processor configured to transmit one of at least two control signals and a switch coupled to the processor and con... | 10/17/2006 |
| 7102331 | Generator 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 |
| 7102246 | Method for detecting slip in generator and starter-generator systems The invention is based on a method for detecting slip in the driving of generator or starter-generator systems. The alternators of these systems are equipped with electronic control components such as pulse-width-modulated inverters or rectifier bridges. The drive t... | 09/05/2006 |
| 7089705 | Portable tower system A portable surveillance system having an easily transportable skid-type base structure that forms a support for a portable tower apparatus. Stabilizers are extendably mounted to the base structure. The tower components include a base member affixed to the base plate... | 08/15/2006 |
| 7084601 | Phase current detector A first condenser is connected between output terminals of a rectifier circuit which receives an AC power as an input, and a three phase inverter is connected in parallel with respect to the first condenser, and output of the three phase inverter is supplied to a mo... | 08/01/2006 |
| 7075271 | Power controlling apparatus with power converting circuit The invention provides an apparatus for bi-directional power conversion between a DC circuit and an AC circuit, which inexpensively and simply suppresses generation losses of elements and reduces heat generation, wherein a voltage obtained by dividing the U-phase vo... | 07/11/2006 |
| 7071658 | Protection of a generator without measuring temperature A method and an apparatus for providing protection to a generator are disclosed. A reference is determined out of rated capability of the generator. Based on the reference, and field current and output conditions of the generator, there is determined a drop in gener... | 07/04/2006 |
| 7038428 | Control apparatus for automotive generator A DF signal averaging circuit includes a counter for counting a clock signal fed from a clock signal generator, an OR circuit which causes the counter to perform count-up operation only when a transistor is in an ON state with the clock signal and a potential signal... | 05/02/2006 |
| 7030593 | Multiple path variable speed constant frequency device having automatic power path selection capability The present invention relates to variable speed constant frequency (VSCF) devices and methods for maximizing engine generator efficiency. In one embodiment, a VSCF device may include at least two paths for conducting power to the load. One path, a line inductor path... | 04/18/2006 |
| 7027944 | Programmable calibration circuit for power supply current sensing and droop loss compensation A circuit for regulating power is disclosed. The present invention provides circuits and methods for current sensing variations, static droop settings, mismatched phase outputs, and temperature variations in a multiphase power regulator. The circuits may include a c... | 04/11/2006 |
