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7629776 |
Control and power module for a rotating electrical machine
A control and power module for a rotating electrical machine comprising a power circuit containing a number of branches, and a control circuit designed for controlling the power circuit when the...
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7453240 |
Generating apparatus and motor control apparatus
A generator having a field coil L, and an SW 1 control circuit 2 for controlling field current flowing through the field coil L. When a generating operation of the generator is to be ended, a...
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7423411 |
Resistive torsional mode damping system and method
A resistive torsional mode damping system for a shaft of a machine includes: a sensor configured for sensing a signal representative of torque on the shaft; a controller configured for using the...
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7345456 |
Power system stabilizer providing excitation limiter functions
A stabilizer and synchronous electric power generator system using same that provides both power system damping and excitation limiter functionality. The stabilizer includes a processing unit and a...
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7315149 |
Vehicle generator
The vehicle generator includes a rotor around which a field winding is wound, a stator around which an armature winding is wound, a rectifier rectifying an AC voltage induced in the armature...
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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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7183750 |
Vehicle 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...
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7045991 |
Maximum power follow-up control apparatus
A power conditioner 10 is provided with a maximum power follow-up control portion 12 for setting a DC operating voltage of a power converter 11 , which converts output power of a power...
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7019496 |
Demand responsive power generation system
A method and apparatus for generating power in a demand responsive manner is disclosed. The apparatus includes a controller monitoring power demand conditions to determine activation of an energy...
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6995544 |
Generator control apparatus
An IC regulator for controlling an alternator by changing contents of control in dependence on ambient temperature includes a control voltage limiter ( 2 ), a field current controller ( 3 ), a...
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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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6954052 |
Control apparatus and control method of generator for vehicle
An electronic control apparatus includes target FR calculator that calculates a target exciting current duty ratio FR based on an exciting current inputted from FR terminal of a regulator and...
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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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6819087 |
Distributed resource (DR) stabilization control for microgrid applications
A power electronic based DR (distributed resource e.g., a UPS (uninterrupted power supply), Fuel Cell or Microturbine) is controlled to emulate a voltage source behind an impedance and behave as a...
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6801020 |
Current response controller for starter/alternator
The system is directed to preserving an IC engine installation from potential overload and failure in response to electrical load increases passed along by an associated engine driven digitally...
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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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6426609 |
Control device for vehicular AC generator, and connector
A control voltage is set to an acceleration control voltage which is higher than a battery voltage V by a predetermined voltage difference ΔV1 within a range and delayed by a predetermined time...
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6351692 |
Method and apparatus for configuring a genset controller for operation with particular gensets
A genset controller that is configurable for controlling a variety of types of gensets, as well as a method of configuring a genset controller for controlling a genset, are disclosed. The genset...
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6337561 |
Apparatus for stabilizing a power system adapted to generating systems
A generating system having a rotating type generator to interconnect a power system in order to output power of the generator to the power system comprises a generator, an exciting circuit and an...
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6218814 |
Device for voltage supply with suppression of load response function during reduction of rpm
A device for voltage regulation for a generator driven by an internal combustion engine is described in which the voltage regulator is equipped with a load response travel function (LRF), which...
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6175217 |
Hybrid generator apparatus
A hybrid generator set comprises an engine/generator or another controllable electrical source which provides a variable voltage electrical output, this output is rectified and fed to a DC to DC...
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6130523 |
Generator transfer function regulator
A generator transfer function regulator incorporating two control loops. The first control loop produces a first generator excitation control signal (U) which varies to compensate for variations in...
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6087791 |
Control apparatus for internal combustion type electric locomotive
To obtain a control apparatus for a Diesel-electric locomotive that harmonizes an engine power with a torque command of an induction motor, which is a load of an engine, in the Diesel-electric...
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6057672 |
Control signal processor and power system stabilizer using the same
A control signal processor effects control to permit or inhibit the passage of an input signal, by a logic operation, based on a ratio of input and output signals of a filter circuit having a...
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5923151 |
Generator voltage regulating system
A motor vehicle electrical system having an engine-driven generator for supplying electrical loads on the vehicle, and a semiconductor switch connected in series with the field winding of the...
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5905357 |
Power generation control apparatus for motorcar power distributor
A power generation control apparatus to be used for a motorcar power distributor can effectively prevent any excessive charging current from flowing into the battery and consequently protect the...
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5754030 |
Duty ratio control for a vehicular generator responsive to low and high power loads
Duty ratio of a power switching transistor connected to the field coil is controlled according to whether or not a high-power load is connected. When the high power load is not connected, the duty...
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5631543 |
Electronic voltage regulator and idle control circuit for generators
A method for controlling an AC generator includes a first step of varying the duty cycle of a pulse width modulated signal as a function of an output voltage appearing across at least one output...
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5604420 |
Stabilizer for power system
The stabilizer for power system is capable of suppressing power unstableness quickly and functioning effectively to a plurality of power disturbances even if the non-linearity of the power system...
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5497069 |
Shock load stabilization circuit and voltage regulator having same
An electronic voltage regulator for generators controlled by means of an exciter field current, comprises an average voltage sensing circuit connected to the output of the generator, a peak voltage...
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4855664 |
Method and apparatus for damping oscillations of an ac generator
A scheme for stabilizing a synchronous alternating current generator through the excitation control to dampen generator oscillations includes a power system stabilizer responsive to signals...
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4701689 |
Optimal control power system stabilizer and method using simulating state variables
The present invention relates to an automatic device for depressing low frequency oscillation of power system. It consists of an electronic circuit incorporated in the original excitation regulator...
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4656413 |
Stabilized control system and method for coupling an induction generator to AC power mains
A stabilized control system and method for smoothly connecting and disconnecting an induction generator to the utility power grid is described. Thyristor switches are interposed between each phase...
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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...
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4399397 |
Electronic phase shift and speed governor
A digital electronic governor controls and stabilizes the electrical power output delivered to an output circuit by an AC alternator having a rotating shaft driven by a source. The governor...
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4393345 |
Circuit for damping hunting by electric machines
A circuit for damping hunting oscillations of controlled electric machines. The circuit is provided with a measuring circuit for determining the hunting oscillations and an identifier circuit for...
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4376295 |
System for predicting desynchronization of a synchronous machine
There is disclosed a system for predicting desynchronization of a synchronous machine by detecting a phenomenon of radical variation of the magnetic flux in the gap of a synchronous machine...
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4326159 |
Method and apparatus for controlling excitation of a generator
Voltage, current and field voltage of a generator connected to an electric power system are sampled at a predetermined period for analog-digital conversion and then led to a digital computer. In...
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4032835 |
Brushless exciter supplemental ceiling excitation system
An excitation system for a synchronous generator includes a conventional brushless exciter for providing base excitation for rated power output and a controlled source of direct current...
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3916291 |
Power generating arrangement employing synchronous dynamoelectric machine having improved dynamic and transient stability
It has been determined that the transfer function of a synchronous dynamoelectric machine connected to an electric system through a transmission line contains complex roots in its numerator and...
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3818317 |
METHOD OF IMPROVING TRANSIENT STABILITY OF SYNCHRONOUS MACHINE
When a fault occurs in an electric power system, a protective relay removes the fault. During this period, an unbalance occurs between the input and output of a synchronous machine and this...
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3775666 |
VOLTAGE REGULATOR FOR SYNCHRONOUS GENERATORS
An accurate, stable, and inexpensive voltage regulator for single or multiple phase synchronous generators. A monolithic integrated circuit comprising reference and error amplifiers establishes a...
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3656048 |
NON-LINEAR EXCITER CONTROLLER FOR POWER SYSTEM DAMPING
Damping of power system oscillations is accomplished by additionally directing exciter-voltage regulation for individual system generators in accordance with variations in the derivative of...
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3652920 |
REGULATED EXCITER-GENERATOR ELECTRICAL POWER APPARATUS RESPONSIVE TO EXCITER FIELD CURRENT
Regulated electric power apparatus including a dynamoelectric machine and exciter. A control feedback loop responsive to the parameter to be regulated is modified by a supplementary negative...
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3621369 |
AUTOMATIC VOLTAGE REGULATING APPARATUS FOR AC GENERATOR WITH ANTIHUNT MEANS
An automatic voltage regulating apparatus for an AC generator, comprising an instantaneous voltage change detecting means with a blind sector which acts to impart its output to the automatic...
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3477014 |
ELECTRICAL CONTROL SYSTEMS WITH STABILIZING CONTROL MEANS
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3474323 |
ELECTRICAL CONTROL SYSTEMS WITH STABILIZING CONTROL MEANS
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3314000 |
Electrical system
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3242353 |
Damping arrangements for electrical generating and distribution systems
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3195032 |
Stabilizing system for synchronous motor or generator
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