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7638983 |
Controller of doubly-fed induction generator
Disclosed is a controller of a grid coupled type doubly-fed induction generator having a multi-level converter topology, which can control the doubly-fed induction generator having a high voltage...
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7595563 |
Method of operating a wind power installation and a wind power installation
The present invention concerns a method of operating a wind power installation comprising an electric generator drivable by a rotor for outputting electrical power to an electrical consumer, in...
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7592784 |
Power manager for an electrical power generator
An electrical power generator includes a controller for making a full power capacity of the generator available for consumption by at least one intelligent load coupled to an output of the...
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7557544 |
Zero crossing detection for an electric power generation system
One system of the present application includes an electric power generation device structured to provide an AC electric power output at a target frequency. This device includes: an electric power...
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7535120 |
Power system with low voltage ride-through capability
A wind powered turbine with low voltage ride-through capability. An inverter is connected to the output of a turbine generator. The generator output is conditioned by the inverter resulting in an...
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7486053 |
Power manager for an electrical power generator
An electrical power generator includes a controller for making a full power capacity of the generator available for consumption by at least one intelligent load coupled to an output of the...
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7474080 |
Method and apparatus for providing economic analysis of power generation and distribution
An economic dispatch program optimally allocates load demand specifying real power and reactive power to be generated by a power plant among various power generators in a manner so that each of the...
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7423412 |
Method, apparatus and computer program product for injecting current
Method and apparatus that provide a response to the negative sequence current demands during a disturbance of the grid system connected to power-generating equipment, such as a wind turbine system,...
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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...
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7394226 |
High voltage generation systems and methods
Systems and methods presented herein generally provide for the controlled voltage of electrical energy through the selected operation of power stages. Generally, a system that provides electrical...
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7392114 |
Method for operating a wind park
A wind park system is disclosed. Briefly described, one embodiment includes at least one wind power installation having a rotor; an electrical generator drivable by the rotor, such that the...
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7365518 |
Ion engine power supply
A power supply for an ion engine comprises a multiphase alternator and a power converter comprising a voltage multiplier coupled to each phase of the alternator. Each voltage multiplier comprises...
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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...
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7292003 |
Starter/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...
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7253590 |
Output control device of generation device
An output control device of a generation device including: a rectifier circuit that rectifies an output of an AC generator and applies the output across a battery; an inverter circuit provided...
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7250689 |
Common composition engine control unit and voltage regulator
A control unit assembly is disclosed including a housing, at least one processor to control operation of an engine, and a voltage regulator configured to regulate a voltage of at least one rail of...
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7245037 |
Wind power fed network
An electric network for generation and transmission of electric power, including a power generating part, a point of common connection for the power generating part, a transmission link, a load...
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7245040 |
System and method for controlling the frequency output of dual-spool turbogenerators under varying load
Methods for maintaining a constant electrical output frequency in a turbogenerator with increased electrical loads are provided. The methods comprise biasing adjustable guide vanes of a compressor...
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7239113 |
Method for reducing undesired currents in an electrical power generation system
An electrical power generation system is provided, and a method of reducing undesired currents therein. The method includes the steps of delivering current via at least one variable frequency...
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7180270 |
Frequency converter for high-speed generators
The present invention relates to a method and to a device for adapting the alternating current generated by a generator ( 1 ) and the alternating voltage generated by a generator ( 1 ) to a grid (...
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7157885 |
Inverter controlled generator set and method for controlling the same
A method for controlling an inverter controlled generator set which comprises a DC power source section having as a power source a generator driven by an engine and an inverter which converts an...
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7151359 |
Variable reluctance generator
A variable reluctance generator has phase windings and a bias winding. By controlling the excitation produced by the bias winding, the speed of the machine or the DC link, a power converter using...
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7088077 |
Position-sensorless control of interior permanent magnet machines
A method of controlling an IPM machine having a salient rotor. Stator terminal signals are measured and rotated to obtain synchronous reference frame current signals. A rotor position is estimated...
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7078830 |
Connecting circuit and method for connecting a generator to the electricity grid making use thereof
The present invention relates to a connecting circuit for connecting to an electricity grid an electric generator for generating electrical energy, comprising a measuring circuit for measuring the...
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7061132 |
Reciprocating engine type electric generator
A reciprocating engine type electric generator includes means for recognizing a phase difference between a phase of an alternate voltage wave generated at a stator coil following rotation of a...
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7015597 |
Power regulator for power inverter
A power inverter includes a regulator circuit that controls real and reactive power output by the inverter. The regulator measures real and reactive output power by calculating x-phasor components...
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6995545 |
Control system for a sputtering system
A fault handling algorithm processes a plurality of fault status signals from a sputtering system in a period of time to generate at least one command signal for affecting the operation of a power...
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6992466 |
Waveform control system
An apparatus for the improvement of AC waveform comprising means for applying a demand input waveform at an input of a circuit for power conditioning (including an inverter PWMVC or BBHCC) that is...
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6969922 |
Transformerless, load adaptive speed controller
The invention in one embodiment is an improved variable speed engine/generator set with an integrated power conditioning system and control method including load shedding to generate high quality...
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6940259 |
Generating device including magneto generator
A generating device including a magneto generator, wherein: an AC control voltage is applied to an armature coil of the magneto generator from a battery via an inverter to change a phase angle of...
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6924628 |
Method and system for operating a generator using a dynamic capability curve
Method and system are provided for operating a generator using a dynamic capability curve. In one embodiment, the method allows providing a family of static capability curves corresponding to...
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6924627 |
Method of reactive power regulation and aparatus for producing electrical energy in an electrical network
A method of reactive power regulation in an electrical network in which electrical power is produced by an electrical generator preferably driven by the rotor of a wind power installation and...
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6919711 |
Electrical machine and an electrical power generating system
A generating set includes an engie driven generator (PGM) having two sets of stator windings (Ga and Gb). A bi-directional AC/DC converter (BCo) has its AC input connected to a junction between the...
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6919712 |
Excitation control device and excitation control method
A reference voltage of an output terminal of a synchronous machine is set according to a reactive current output from the synchronous machine, a reference voltage of the high voltage side of a...
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6891281 |
Method for operating a wind power station and wind power station
The present invention concerns a method of operating a wind power installation having an electrical generator drivable by a rotor for delivering electrical power to an electrical network to which...
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6876176 |
Toroidally wound induction motor-generator with selectable number of poles and vector control
A system including an induction machine with a toroidally wound stator and a squirrel cage rotor is presented. The toroidally wound stator has a plurality of phase windings. A position sensor may...
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6831439 |
Apparatus for measuring magnetic flux of synchronous reluctance motor and sensorless control system for the same motor
Disclosed are a flux observer and a sensorless control system of a synchronous reluctance motor. The flux observer includes an estimated flux output unit, a measured flux output unit, and a...
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6831445 |
Automotive alternator having parallel connected circulating circuit to rapidly attenuate field current
An automotive alternator is provided which includes a rectifier, a circulating circuit, and a controller. The circulating circuit is connected in parallel to a field winding to circulate the field...
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6806688 |
Difference power adjustment apparatus having a capacitor and reactor connected power-system bus
A power adjustment apparatus includes a phase shifter including a stator having a stator winding and a rotor having a rotor winding, a winding terminal of one of the stator winding and the rotor...
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6794855 |
Voltage stabilization control method and voltage stabilization control apparatus
A voltage stabilization control method for controlling a voltage of a power system that is connected to an adjustable speed machine includes detecting an active power change of the power system;...
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6744240 |
Method for improving the efficiency of an electrical machine
A method for operating an electrical machine ( 1 ) for the production of electrical power ( 13 ) includes an excitation winding ( 2 ) and a stator winding ( 4 ). A converter configuration ( 6 ),...
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6727621 |
Motor-based electrical power supply
An apparatus comprises a stator coil for conducting an electrical input current to activate the stator coil. A magnetic structure is for magnetically interacting with the stator coil to produce...
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6720753 |
Power generation system using synchronous generator
An apparatus for controlling a synchronous generator having a converter. A voltage detector detects a terminal voltage of a stator of the synchronous generator. A current detector detects a current...
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6700353 |
Battery charging system and vehicle generator control system
A battery charging system is provided for an excellent engine starting. The battery charging system includes a generator control unit for controlling output voltage of the generator and a...
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6664654 |
System and method for dual mode control of a turbogenerator/motor
A method of controlling a permanent magnet turbogenerator/motor includes providing a protected load connected in parallel with the turbogenerator/motor through a pulse width modulated inverter...
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6661207 |
Apparatus and method for protecting synchronous generators against off-nominal frequency deviation and alternating forces excitation
An apparatus and method for protecting synchronous generators against off-nominal frequency deviation and alternating forces excitation is provided. Particular application can be found with...
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6628103 |
Power factor control apparatus and method
A power factor control apparatus comprises a target power factor setting section which sets a target power factor range of the plurality of power generators in a fixed cycle, a comparing section...
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6498462 |
Generator control system to accommodate a decrease in a power grid voltage
A system includes a generator and a circuit. The generator is coupled to provide power to a power grid. The circuit is coupled to the generator and is adapted to use a scheme to detect a shut down...
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6411065 |
Integrated control system and method for controlling mode, synchronization, power factor, and utility outage ride through for micropower generation systems
An integrated system for comprehensive control of an electric power generation system utilizes state machine control having particularly defined control states and permitted control state...
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6359421 |
Method for the optimized control in terms of output and efficiency of synchronous machines
A method for optimized power and efficiency regulation of rotary current generators with an associated converter bridge, in particular synchronous machines, is described in which at least three...
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