Class / Patent application number | Description | Number of patent applications / Date published |
322022000 | Plural conditions | 64 |
20100072958 | POWER GENERATION CONTROL APPARATUS OF A ROTATING ELECTRICAL MACHINE FOR A VEHICLE - A power generation control apparatus of a rotating electrical machine for a vehicle is obtained which achieves load response control in a plurality of electric power generation control modes even if a generation voltage final target value rapidly changes. The apparatus includes a power control unit | 03-25-2010 |
20100085023 | Control Device for Automobile Battery-Charging Generator - This invention provides a control device for automobile battery-charging generators, adapted to supply a plurality of sets of specifications in a highly reliable and stable form by simple switching between electrical characteristics assigning and limiting functions so as to meet various needs of users. | 04-08-2010 |
20100194355 | POWER-GENERATION CONTROL APPARATUS FOR IN-VEHICLE ELECTRIC ROTATING MACHINE - There can be performed the best power-generation control without enlarging the apparatus, deteriorating the reliability, and raising the cost. The power-generation control apparatus is provided with a power-generation amount suppression determination unit that determines whether or not to change a power-generation amount suppression level for suppressing the power-generation amount of the in-vehicle electric rotating machine, based on a present generation-voltage command value generated by a generated-voltage command unit and a generated-voltage past command value based on a past generated-voltage command value stored in a generated-voltage command storage unit, and that determines whether or not the power-generation amount suppression control is required, based on at least one of a past value and a present value of the generated-voltage command; therefore, there can be performed the best power-generation control without enlarging the apparatus, deteriorating the reliability, and raising the cost. | 08-05-2010 |
20110037441 | SYSTEMS AND METHODS OF REDUCING A LOAD ON AN ENGINE - A system for reducing an alternator's load on an engine when the engine drives a second load. The system includes an alternator, a battery, a resistor, and a switch. The alternator includes a stator, a voltage regulator, a rectifier, and a field coil. The battery has a first terminal coupled to the alternator and a second terminal coupled to the alternator. The resistor has a first lead coupled to the first terminal and a second lead coupled to the field coil. The switch is coupled in parallel across the resistor, and is open when the engine drives the second load and closed when the engine is not driving the second load. | 02-17-2011 |
20120119711 | HIGH VOLTAGE DC POWER GENERATION - A DC power generating system includes a permanent magnet generator (PMG), an active rectifier in electrical communication with the PMG, and a controller in electrical communication with the active rectifier, wherein the controller is configured to regulate d-q components of a stator current of the PMG in a synchronous reference frame. | 05-17-2012 |
20120119712 | CONTROL METHOD FOR DOUBLY-FED ELECTRIC GENERATOR - Exemplary embodiments provide a method of controlling a doubly-fed electric generator using a frequency converter having a torque and flux controller. The frequency converter is connected to a rotor of the generator. The frequency converter calculates a stator flux positive sequence component from a stator flux. A rotor flux amplitude reference and an estimated torque is then calculated by using the stator flux positive sequence component. The frequency converter selects a voltage vector to steer the rotor flux by using the rotor flux amplitude reference and the estimated torque. | 05-17-2012 |
20120161723 | Switched Reluctance Generator Integrated Controls - A method of controlling a generator ( | 06-28-2012 |
20130057226 | VEHICLE GENERATOR CONTROL SYSTEM AND METHOD FOR SAVING FUEL - A vehicle generating system for saving fuel includes a battery supplying power to electric loads in a vehicle, an electric generator supplying power to the battery and the electric loads, a speed calculation module that calculates operation speed of a wiper in the electric loads, and an ECU including an electric generation control prevention module controlling the electric generator to perform electric generation control prevention when the operation speed calculated by the speed calculation module is compared with a predetermined reference speed and the calculated operation speed is equal to or more than the reference speed, and controlling the electric generator to remove the electric generation control prevention when the operation speed is less than the reference speed. | 03-07-2013 |
20140125296 | METHOD FOR CONTROLLING THE RESISTING TORQUE OF A MOTOR VEHICLE ALTERNATOR, AND SYSTEM FOR IMPLEMENTING THIS METHOD - A method is disclosed to produce a supply voltage (B+) in an on-board system of a vehicle in response to an excitation current (I_ROTOR) applied to a rotor of the alternator. The method is of the type that consists in: limiting the resisting torque by determining a maximum cyclic ratio (DC_C_LIMIT) of the excitation current as a function of variables taken from a group containing a rotational speed (V_ROTOR) of the rotor, a temperature of the rotor, the excitation current and the supply voltage (B+). The maximum cyclic ratio is determined as a function of at least two of the variables in the group. According to one specific embodiment, the variables are rotational speed and temperature. According to another embodiment, the variables are rotational speed and excitation current. | 05-08-2014 |
20140285161 | METHOD AND SYSTEM FOR MONITORING THE PROGRESSIVE CHARGING OF AN AUTOMOBILE ALTERNATOR, AND AUTOMOBILE ALTERNATOR COMPRISING SUCH A SYSTEM - The method according to the invention involves limiting the charging of a vehicle alternator by only authorizing progressive augmentation of a current duty cycle (DC) of an excitation signal ( | 09-25-2014 |
20150015214 | ACTIVE VIBRATION DAMPING USING ALTERNATOR - A method of performing active vibration damping in a front end accessory drive (FEAD) system of an automobile using an alternator of the FEAD system and an alternator are described. The method includes determining a resonance to be counteracted, determining a counteracting forcing function to counteract the resonance, and determining a duty cycle change to apply to a field voltage to obtain an output voltage with the counteracting forcing function, wherein the field voltage results in a field current supplied to a rotor that causes a stator to generate the output voltage. The method also includes implementing the duty cycle change for a period of time. | 01-15-2015 |
20150123624 | VIBRATION DAMPING CONTROL APPARATUS FOR VEHICLE, VIBRATION DAMPING CONTROL SYSTEM FOR VEHICLE, AND VEHICLE MOTION CONTROL APPARATUS - A vibration damping control apparatus for a vehicle is applied to a vehicle that includes: a generator that is driven by an internal combustion engine to generate electric power; a regulator that controls field current passing through an excitation winding of the generator, so that generated voltage of the generator turns to an externally instructed adjusting voltage; and a battery that charges generated voltage of the generator. The vibration damping control apparatus for a vehicle includes an adjusting voltage setting means for setting the adjusting voltage based on a charge supply power request value required for controlling a residual capacity of the battery and a drive torque request value for the generator required for suppressing vibration of the vehicle. | 05-07-2015 |
322023000 | Including an electrical condition | 52 |
20090146615 | Hybrid Motor Vehicle and Method for Controlling Operation of a Hybrid Motor Vehicle - The invention relates to a method for controlling an operation of a motor vehicle equipped with a hybrid drive unit ( | 06-11-2009 |
20090184692 | ACG OUTPUT VOLTAGE CONTROL - A system provides generator control for a power system within a vehicle. The system includes a battery, a generator that outputs power to charge the battery. A sensor detects a state of charge (SOC) value, a health value, a voltage, a current, a temperature, and a charging voltage of the battery. A controller controls a voltage output mode of the generator in response to at least one of a state of charge (SOC) value, a health value, a voltage, a current, a temperature, and a charging voltage of the battery detected by the sensor, the voltage output mode is in response to the SOC and the temperature of the battery. | 07-23-2009 |
20100019738 | System and method for electric current and power monitoring and control of a generator - A control device measures a voltage drop across a conductor in a generator to determine and control the total generator output current. A temperature of the conductor is also measured to improve the accuracy. The control device may further improve on the accuracy by compensating for the electrical current through a field coil that may power the generator. The control device may be used in combination with a generator in a vehicle electrical system. Other system parameters may be monitored to improve on the system monitoring, diagnostics, and control. The generator may include a conductor comprising a process-controlled geometric shape. | 01-28-2010 |
20100102783 | Method and system to reduce accessory drive belt slip - A method and a system for reducing belt noise in an engine, wherein the belt is engaged with an alternator includes a transmission upshift detection module determining a transmission upshift or a quickly closing throttle detection module determining a quickly closing throttle. The control module further includes an engine speed prediction module determining a predicted engine speed in response to determining a transmission upshift and an engine deceleration prediction module determining a predicted engine deceleration when the predicted deceleration of the engine crankshaft is greater than a threshold. An alternator control module controls a rotor current in the alternator to add load to the alternator rotor to reduce potential belt noise. | 04-29-2010 |
20100264884 | METHOD FOR CONTROLLING THE PROGRESSIVE CHARGE OF A MOTOR VEHICLE ALTERNATOR - A method for controlling the progressive charge of a motor vehicle alternator. The alternator comprises a stator, a rotor which is provided with an excitation coil, a voltage regulator which acts on an excitation current which is supplied to the excitation coil in order to regulate an output voltage of the alternator, and a device for controlling the progressive charge which, by means of limitation of the excitation current to a maximum value, determines a maximum mechanical torque which the alternator can collect on a thermal engine of the vehicle. The maximum mechanical torque is determined according to a speed of rotation (N | 10-21-2010 |
20110181250 | POWER SUPPLY APPARATUS - A power supply apparatus includes: an AC generator including an AC generating section, and a rectifier for rectifying an AC voltage generated in the AC generating section, and outputting a DC voltage; and a DC/DC converter for converting the output voltage of the rectifier into a DC voltage having a different voltage value, wherein the output voltage of the rectifier is set to be larger than the output voltage of the DC/DC converter in accordance with the rotation speed of the AC generating section and the amount of power supply to an electrical load connected to the DC/DC converter, and is stepped down and outputted by using the DC/DC converter. The power supply apparatus is capable of increasing an output power efficiently. | 07-28-2011 |
20110241630 | POWER CONVERSION SYSTEM FOR A MULTI-STAGE GENERATOR - An electric power generation system is provided, including a generator having a plurality of stages engaged by a prime mover; and a plurality of branches for connecting the stages to an electrical load, each of the branches having a switch for connecting or disconnecting the branch to the stages. Power from a prime mover, such as a turbine, is sent by a controller to one or more of the branches as appropriate to handle the power level generated. | 10-06-2011 |
20120098503 | ELECTRIC ROTATING MACHINE FOR VEHICLE - A generator has a field coil of a rotor, an armature coil of a stator, a control device supplying an exciting current to the field coil when detecting rotation of the rotor, and a control circuit alternately setting an upper arm transistor and a lower arm transistor in on state in a rectifier module to generate a phase voltage. The control device detects the rotation from a periodic change in a sign of the difference between the phase voltage and a reference voltage. When the rectifier module is overheated, the control circuit sets the upper arm transistor in the off state and sets the lower arm transistor in the on state to almost fix the phase voltage, the control device detects no rotation and stops supplying the exciting current, and the rectifier module generates no phase voltage to decrease temperature of the rectifier module. | 04-26-2012 |
20120105019 | GENERATOR REGULATING SYSTEM HAVING MAIN AND AUXILIARY REGULATORS - A regulating device for regulating the output voltage of a generator; in particular a vehicle generator is described. To improve protection of the voltage regulation from failure, for normal operation it is proposed to perform the regulation using a main regulator which is implemented as software in a control unit, and in the event of a malfunction of the main regulator, to perform the regulation using an auxiliary regulator. | 05-03-2012 |
20120119713 | DEVICE FOR CONTROLLING POWER GENERATION OF ON-VEHICLE POWER GENERATOR - A device for controlling an on-vehicle power generator is provided with switching means, detecting means, voltage control means, startup control means and normal state control means. The voltage control means controls the output voltage of the power generator together with the switching means. The detecting means detects state of the power generation including a startup state where the engine is in startup condition and a normal state where normal power generation has been performed. The startup control means controls the voltage control means to start/stop of the power generation based on the frequency of the phase voltage of the power generator in the startup state. The normal state control means controls the voltage control means in the normal state such that the normal state control means controls the voltage control means to continue the power generation or stops the power generation based on the frequency of the phase voltage. | 05-17-2012 |
20130009611 | DIRECT POWER AND STATOR FLUX VECTOR CONTROL OF A GENERATOR FOR WIND ENERGY CONVERSION SYSTEM - A method for controlling a variable speed wind turbine generator is disclosed. The generator is connected to a power converter comprising switches. The generator comprises a stator and a set of terminals connected to the stator and to the switches of the power converter. The method comprises: determining a stator flux reference value corresponding to a generator power of a desired magnitude, determining an estimated stator flux value corresponding to an actual generator power, determining a difference between the determined stator flux reference value and the estimated stator flux value, and operating said switches in correspondence to the determined stator flux reference value and the estimated stator flux value to adapt at least one stator electrical quantity to obtain said desired generator power magnitude. | 01-10-2013 |
20130193933 | METHOD AND ARRANGEMENT FOR OPERATING A WIND TURBINE CONVERTER - A method of operating a converter of a wind turbine for providing electric energy to a utility grid includes determining a grid voltage. If the grid voltage is between a nominal voltage and a first voltage threshold, i.e. higher than the nominal voltage, a normal procedure for lowering the grid voltage is performed. If the grid voltage is above the first voltage threshold, another procedure for keeping the wind turbine connected is performed, wherein the other procedure is different from the normal procedure. Further a corresponding arrangement is described. | 08-01-2013 |
20130193934 | WIND TURBINE GENERATOR, CONTROL METHOD FOR WIND TURBINE GENERATOR, WIND TURBINE GENERATOR SYSTEM, AND CONTROL METHOD FOR WIND TURBINE GENERATOR SYSTEM - It is an object to stabilize a utility grid even when an unexpected fluctuation in the frequency of the utility grid occurs. A wind turbine generator includes a rotor that rotates by wind power, a generator that is driven by rotation of the rotor, and a control device that controls a power output of the generator to increase while a rotational speed of the generator decreases when a frequency of a utility grid becomes smaller than or equal to a predetermined rated frequency and when the rotational speed of the generator is greater than or equal to a first predetermined value. In this way, even when the frequency of the utility grid fluctuates, the frequency fluctuation can be suppressed, and the utility grid can be stabilized. | 08-01-2013 |
20130221935 | METHOD AND DEVICE FOR OPERATING A GENERATOR IN A RECUPERATION SYSTEM OF A MOTOR VEHICLE - A setpoint for a mechanical torque of a generator in a recuperation system of a motor vehicle is specified, and a generator current of the generator for setting the specified mechanical torque of the generator is set. | 08-29-2013 |
20130271093 | CONTROL APPARATUS OF AN AC GENERATOR FOR A VEHICLE - A control apparatus of an AC generator for a vehicle can obtain large regeneration energy without making the size of the generator large. In the control apparatus in which an AC output current is rectified and supplied to a vehicle mounted battery ( | 10-17-2013 |
20160111990 | SYSTEMS AND METHODS FOR BATTERY REGENERATION BASED ON ENGINE LOADING - An alternator voltage may be controlled based on a proportional gain scheduling in response to an engine load of an internal combustion engine and/or a state of charge (SOC) deviation for a battery based on a target SOC of the battery and an actual SOC of the battery. The alternator voltage may be a voltage less than a current battery voltage under high engine loads to enable the battery to power an accessory system and the alternator voltage may be a voltage greater than a voltage of the battery under low engine loads or engine loads less than high engine loads to enable the alternator to charge the battery. | 04-21-2016 |
322024000 | Plural electrical conditions | 36 |
20080284385 | HIGH EFFICIENCY GENERATOR - A generator system that includes a three-phase AC machine and an active rectifier bridge employing low on-resistance MOSFET switches for converting the AC current from the machine to a DC current. The system also includes a switch control circuit to switch the MOSFET switches in synchronization with the three-phase current flow. The system determines the phase-to-ground voltages of the machine as inputs to the switch control circuit. The control circuit calculates the phase-to-phase voltages from the phase-to-ground voltages. The control circuit then determines if each of the phase-to-phase voltages is above or below first and second predetermined threshold voltages, where if the phase-to-phase voltage is above the first threshold voltage, the control circuit closes the switch, and if the phase-to-phase voltage is below the second threshold voltage, the control circuit opens the switch. | 11-20-2008 |
20090085531 | Vehicle-mounted alternator - The stator of the vehicle-mounted alternator includes a stator core formed with a plurality of slots located along a circumferential direction thereof, and first and second multi-phase windings wound in the slots, the first and second multi-phase windings being spaced from each other by a predetermined electrical angle. An output of the first multi-phase winding is rectified by a first rectifier device, and an output of the second multi-phase winding is rectified by a second rectifier device. The second rectifier device is constituted by a plurality of switching devices. The vehicle-mounted alternator includes a control device to perform on/off control on the switching devices such that a phase angle difference between an output of the first rectifier device and an output of the second rectifier device is varied depending on a rotation speed of the stator. | 04-02-2009 |
20090195223 | Power generation controlling device for vehicles, which device has Bi-directional communication function with external control unit - A power generation controlling device for vehicle includes a communication controlling circuit, a power generation voltage and excitation current controlling circuit, and a communication frame processing circuit. The communication controlling circuit communicates with an ECU using a communication frame. The power generation voltage and excitation current controlling circuit controls power generation based on power generation control information in the received communication frame. The communication frame processing circuit decodes contents of power generation control information (i.e., signal switching data) included in the communication frame based on a signal switching bit in the same communication frame. Two types of contents or more that are switched based on the signal switching bit are assigned to the power generation control information in the communication frame. The power generation voltage and excitation current controlling circuit controls power generation based on the power generation control information of which the contents are specified by the switching information. | 08-06-2009 |
20100019739 | DEVICE FOR DAMPING CONTROL - A device for damping control of mechanical torsional oscillations of an electrical alternating current generator connected to a multi-phase power supply system, includes a controllable converter of an HVDC installation connected to the power supply system, a measurement and filter device for detection of a frequency-dependent signal in a frequency range of the torsional oscillations of the alternating current generator and a correction apparatus for correction of a control signal for the converter for the HVDC installation. The correction apparatus includes a single phase correction filter for correction of a phase frequency response of the frequency-dependent signal. The control signal is formed by a current nominal value of a current regulator of the converter or a triggering angle of the nominal valve and with the phase correction filter is configured to take a transfer function of the current regulator into account. | 01-28-2010 |
20100123439 | Alternator Regulator With Variable Rotor Field Frequency - An alternator comprises a regulator configured to control the electric current to a field coil. The regulator includes a field driver circuit, the field driver circuit configured to deliver the electric current to the field coil at a switching frequency. The regulator further includes a controller configured to vary the switching frequency of the field driver circuit between a plurality of different switching frequencies. The alternator further comprises a sensor configured to detect a predetermined alternator condition, and the controller is configured to adjust the switching frequency of the field driver circuit in response to the sensed predetermined condition such as, for example, a rotor speed, a pulse width from the field driver circuit, an efficiency of the alternator, a temperature within the alternator, a temperature outside of the alternator, or magnetic noise of the alternator. | 05-20-2010 |
20100301815 | ELECTRIC VEHICLE HAVING A GENERATOR - An electric vehicle having a generator includes a body, an electric machinery, an electric machinery controller, a battery and a generator. The generator generates electricity to the battery and provides power supply to the electric machinery through the electric machinery controller for driving wheels of the body to advance. The electric vehicle further includes a control system. The control system includes a central processing unit (CPU), a battery voltage detection module to detect a voltage value of the battery and send the voltage value of the battery to the CPU, a comparison module to compare the voltage value of the battery with a preset maximum voltage value and a preset minimum voltage value and send a comparison result to the CPU, a battery output current detection module to detect an output current value of the battery and send the output current value of the battery to the CPU, a generator output voltage detection module to detect an output voltage value of the generator and send the output voltage valve of the generator to the CPU, the CPU being adapted to receive the aforesaid data and analyze for controlling the generator to work and its output status. The present invention ensures that the electric vehicle is able to drive outdoors continually without causing any harmful effect to an electric machinery controller and a battery so as to provide a certain protection to the battery. | 12-02-2010 |
20110101928 | OUTPUT CONTROL APPARATUS OF GENERATOR - An excitation winding ( | 05-05-2011 |
20110101929 | CONDENSIVE LOAD PROTECTION DEVICE OF SELF-EXCITED GENERATOR - In a self-excited generator | 05-05-2011 |
20110115445 | POWER SYSTEM - A power system is provided for delivering a custom level of electrical power to an industrial or commercial facility, comprising a local generator connected to a turbine operating in accordance with an organic Rankine cycle, the local generator having a capacity at least greater than a maximum anticipated power level needed for the electrical needs of a local industrial or commercial facility, one or more control devices operatively connected to the local generator for regulating active and reactive power generated by the generator, a detector for sensing active voltage induced by said generator, a detector for sensing reactive voltage produced by the generator, and a controller in electrical communication with said one or more control devices and with the active and reactive voltage detectors, wherein the controller directs the one or more control devices to regulate the generator such that the active power and reactive power generated by the generator are sufficient to satisfy active and reactive load conditions, of local industrial or commercial facilities. The present invention is also directed to a power system for providing a fast acting spinning reserve, comprising a turbine module of a organic Rankine cycle that is coupled to a generator, a main conduit through which motive fluid heated in said thermodynamic cycle is delivered to the turbine module, and a flow control component operatively connected to said main conduit for automatically limiting the flow of the motive fluid to the turbine module during base load conditions and for automatically increasing the flow of the motive fluid to the turbine module during variable load conditions. | 05-19-2011 |
20110156664 | POWER GENERATOR WITH IMPROVED CONTROLLABILITY OF PHASE OF PHASE CURRENT - In a power generator, three-phase armature windings and a switching unit are provided for each phase armature winding. The switching unit includes a pair of a high-side switching element with a first diode and a second low-side switching element with a second diode. The switching unit rectifies, through at least one of the high-side switching element, the first diode, the second low-side switching element, and the second diode, a voltage induced in each phase armature winding. A zero-cross detector detects a point of time when a phase current based on the voltage induced in each phase armature winding is reversed in direction as a zero-cross point of the phase current. A deter miner determines an off timing of the high-side switching element or the low-side switching element for each phase armature winding relative to the zero-cross point detected by the zero-cross detector. | 06-30-2011 |
20120007569 | CONTROL DEVICE FOR VEHICLE AC GENERATOR - A control device for a vehicle AC generator, in which a part can be shared even when electrical configuration positions of field coils of rotors of generators are different, is obtained. Switching elements connected in series to the field coil in order to control a field current; and a control signal processing unit, in which information as to whether the field coil is connected to the high potential side or connected to the low potential side is inputted, one of the high potential side terminal and the low potential side terminal is selected on the basis of the inputted information, a control signal is outputted, and ON/OFF control of the switching element is performed to control the field current of the field coil, are provided. | 01-12-2012 |
20120176100 | METHOD FOR CONTROLLING A ROTATING ELECTRIC MACHINE, PARTICULARLY AN ALTERNATOR - The invention relates to a method for controlling an alternator or alternator-starter of a motor vehicle, the electric machine being capable of providing an electric current, the strength of which varies on the basis of the excitation signal (EXC), a duty cycle being associated with each excitation signal, the method comprising the following steps:—comparing the difference between the duty cycle values of two consecutive excitation signals at a predetermined threshold;—if said difference is greater than the predetermined threshold, releasing a gradual response phase, during which the duty cycle of the excitation signals is gradually increased, particularly in a substantially linear manner;—at the start of said gradual response phase, increasing the duty cycle of the consecutive excitation signals by a predetermined jump (D_B), then gradually increasing the duty cycle, the duty cycle jump at the start of the gradual response phase being less than or equal to the release threshold of the gradual response phase. | 07-12-2012 |
20120286744 | VEHICLE ALTERNATOR HAVING SYNCHRONOUS RECTIFICATION AND ELECTRONIC FAULT MANAGEMENT - A synchronous rectification alternator for a motor vehicle is disclosed. The alternator includes a stator, a rotor, and a synchronous rectification system for rectifying into a DC voltage the alternating voltages supplied by the stator, and a voltage regulator for regulating the DC voltage. The alternator also includes fault detection for detecting faults in the synchronous rectification and supplying fault detection information to the voltage regulator. In one version, the fault information is supplied to the voltage regulator at fault inputs also receiving phase signals representing the alternating voltages supplied by the stator. At least one of the items of fault information is used to cause, in the voltage regulator, opening of an excitation circuit supplying current to an excitation coil of the rotor so as to produce, in the voltage regulator, a fault indication. The opening of the excitation circuit is preferably caused through a suitable command of a fast demagnetisation transistor included in the excitation circuit. | 11-15-2012 |
20130027000 | REDUCTION OF NOISE AND VIBRATIONS OF AN ELECTROMECHANICAL TRANSDUCER BY USING A MODIFIED STATOR COIL DRIVE SIGNAL COMPRISING HARMONIC COMPONENTS - A method of controlling an electromechanical transducer includes (a) observing the strength of a physical quantity being characteristic for the harmonic operational behavior, (b) providing an observation signal being indicative for the observed strength of the physical quantity, (c) comparing the provided observation signal with a reference signal for the strength of the harmonic operational behavior, (d) determining a harmonic control signal in response to the observation signal and in further response to the reference signal, (e) generating a modified drive signal based on the determined harmonic control signal, and (f) supplying the generated modified drive signal to electromagnetic coils of a stator of the electromechanical transducer. Further, a control system and a computer program which are adapted for carrying out and/or for controlling the method are provided. | 01-31-2013 |
20130119948 | SELF-ENERGIZING VOLTAGE REGULATOR WITH IMPROVED TRANSIENT RECOVERY - A vehicle electrical system comprises a generator, voltage regulator, switch module, and control device. The generator includes a field coil and one or more stator windings coupled together via the switch module. The generator provides electrical current to one or more electrical loads. The voltage regulator maintains the generator output voltage at a constant voltage by varying the field current. The switch module may include low-power transistors. The control device monitors the field current, output voltage and stator current and applies control signals to the switch module to improve transient recovery due to sudden variations in the electrical load and increase system efficiency during normal operation. | 05-16-2013 |
20140049228 | SYNCHRONOUS POWER CONTROLLER FOR A GENERATING SYSTEM BASED ON STATIC POWER CONVERTERS - The invention relates to a synchronous power controller for a generation system based on static power converters, said controller comprising two main blocks referred to as: block | 02-20-2014 |
20140062424 | SYSTEM AND METHOD FOR CONTROLLING A DUAL-FED INDUCTION GENERATOR IN RESPONSE TO HIGH-VOLTAGE GRID EVENTS - In one aspect, a method for controlling a dual-fed induction generator (DFIG) during a high-voltage grid event is provided. The method includes setting, by a controller, an output of a closed-loop portion of a rotor current regulator to a fixed value such that a predictive feed-forward path sets an internal voltage for the DFIG; and detecting, by the controller, a condition of high dc voltage on a dc link or a condition predictive of high dc voltage on the dc link, and in response reduce a rotor torque producing current command to approximately zero, wherein the dc link connects a line-side converter connected to a system bus and a rotor-side converter connected to a rotor of the DFIG. | 03-06-2014 |
20140266076 | EPGS ARCHITECTURE WITH MULTI-CHANNEL SYNCHRONOUS GENERATOR AND COMMON UNREGULATED PMG EXCITER - A generator system includes a generator having a stationary portion and a rotating portion. The generator includes a permanent magnet based exciter with permanent magnets disposed on the stationary portion. A first channel includes a first main field winding and a first main field power converter disposed on a rotating portion. The first main field power converter selectively delivers voltage from the exciter winding to the first main field winding. A second channel includes a second main field winding and a second main field power converter disposed on the rotating portion. The second main field power converter selectively delivers voltage from the exciter winding to the second main field winding. A generator control unit is connected to the first channel and the second channel. The generator control unit monitors an output voltage at each of the first channel and the second channel and generates the first and second control signals based on the output voltage. | 09-18-2014 |
20150008889 | VEHICLE POWER-GENERATION CONTROL DEVICE AND CONTROL METHOD THEREOF - Provided is a power-generation control device capable of appropriately using a drive belt looped around a power generator and an internal-combustion engine mounted on a vehicle. The device monitors a difference between an actual generated current of a rotating electrical machine and an estimated generated current estimated from estimated power-generation torque for controlling power generation of the rotating electrical machine, which corresponds to a power-generation torque command, or the like. When a difference equal to or more than a predetermined value occurs between the actual and the estimated generated currents, the power-generation control device limits the estimated power-generation torque so as to be reduced, and further limits the estimated power-generation torque with use of learning limiting power-generation torque calculated based on the estimated power-generation torque at a time when the difference has occurred between the actual generated current and the estimated generated current. | 01-08-2015 |
20150115903 | VEHICULAR CHARGING SYSTEM - A vehicular charging system includes: a generator which has a field coil and is mounted on a vehicle; a storage battery which stores power; a storage state detection sensor which detects a charge state; and a power generation driving torque control device which calculates an actual value and a target value of power generation driving torque of the generator, and controls the generator based on the calculated target value. The power generation driving torque control device controls the generator based on a first target value of the power generation driving torque when a running state of the vehicle moves into a deceleration mode, and decreases the power generation driving torque to control the generator based on a second target value of the power generation driving torque when a charge state of the storage battery reaches a reference value, the second target value being smaller than the first target value. | 04-30-2015 |
20150123625 | Synchronous Generator Control, Generator System and Vessel Energy System - An arrangement for controlling a synchronous generator having a stator comprising at least one stator winding and having a rotor with an electromagnet driven by a field current is provided. The rotor is rotatable relative to the stator. The electromagnet is inductively coupled to the at least one stator winding. The arrangement includes a measurement system configured to measure at least one quantity and a controller configured to cause shutting down the field current when the at least one quantity satisfies at least one criterion associated with at least one malfunction. | 05-07-2015 |
20150326160 | STATIC EXCITER SYSTEM FOR GENERATORS - The present invention relates to the field of generator technology. It is an object of the invention to control the stability in an electric grid in which a plurality of generators are connected providing electric power to the grid. A static exciter system includes a control device for controlling the field voltage of the field winding of at least two generators connected to a grid system via a busbar. | 11-12-2015 |
322025000 | Voltage and current | 14 |
20090058373 | GENERATOR CONTROL CIRCUIT - A generator control circuit is disclosed. One embodiment provides a first active switching circuit configured to connect a first terminal of an excitation coil either to a first or to a second terminal of a voltage source, a second active switching circuit configured to connect a second terminal of the excitation coil either to the first or to the second terminal of the voltage source, and a generator controller to set the duty cycle of the active switching circuit to rapidly control the current through the excitation coil to an excitation coil current setpoint. | 03-05-2009 |
20090079399 | OVERLOAD CONTROL OF AN ELECTRIC POWER GENERATION SYSTEM - A control system for an electrical power generation system (EPGS) provides overload protection without disconnecting a generator of the EPGS from an excessive electrical load. Available engine power and current levels of the electrical load are continuously measured. A command voltage is calculated that corresponds to a voltage required to sustain with the maximum available power. Output voltage of a generator of the EPGS is controlled at the calculated command voltage so that a power limit of the engine is not exceeded during electrical overload conditions. | 03-26-2009 |
20090115378 | APPARATUS AND METHOD OF CONTROLLING GENERATION OF ELECTRIC POWER IN VEHICLE - The present invention relates to an apparatus for controlling generation of electric power in a vehicle that is capable of calculating a target state of charge (SOC) of a battery on the basis of a SOC of the battery and an amount of accumulated current according to individual driving modes and performing a feedback control on generation of an alternator to follow the target SOC, thereby maintaining an optimal SOC and improving fuel efficiency. | 05-07-2009 |
20090167255 | Voltage Regulation to Reduce Ripple in a Power Generation System - Methods and systems are disclosed for reducing alternating current ripples in direct current electrical power generation systems with one or more regulated permanent magnet machines. Ripple suppression is achieved, in one aspect, by modulating the control current of a regulated permanent magnet machine. | 07-02-2009 |
20090167256 | System and method for suppressing DC link voltage buildup due to generator armature reaction - A controller employed in conjunction with a synchronous generator monitors the output voltage of the generator. The controller employs the monitored output voltage as feedback that is used to control the excitation provided to an exciter field winding. In addition, the controller applies a control loop to the monitored output voltage that detects and modifies voltage ripple signals within the monitored output voltage to generate a compensated signal that is used to control the excitation to the exciter field winding. In particular, by detecting and modifying voltage ripple signals within the monitored output voltage, the controller is able to counteract armature reaction voltage ripples caused by unbalanced short-circuit faults, thereby preventing the build-up of voltage on the DC link. | 07-02-2009 |
20090251112 | Permanent magnet electric generator with variable magnet flux excitation - A permanent magnet (PM) electric generator with directly controllable field excitation control comprises: a drive shaft; a PM rotor assembly with multiple PMs arranged around an outer axial periphery of the rotor assembly; a stator assembly comprising a ferromagnetic stator yoke, multiple ferromagnetic stator teeth mounted to the stator yoke with distal ends proximate the outer axial periphery of the rotor assembly separated by an air gap and multiple stator coils mounted between the stator teeth; multiple saturable ferromagnetic shunts, each shunt coupling adjacent distal ends of the stator teeth to shunt air gap magnetic flux Φ | 10-08-2009 |
20090302809 | System and method for electric current and power monitoring and control of a generator - A control device measures a voltage drop across a conductor in a generator to determine and control the total generator output current. A temperature of the conductor is also measured to improve the accuracy. The control device may further improve on the accuracy by compensating for the electrical current through a field coil that may power the generator. The control device may be used in combination with a generator in a vehicle electrical system. Other system parameters may be monitored to improve on the system monitoring, diagnostics, and control. The generator may include a conductor comprising a process-controlled geometric shape. | 12-10-2009 |
20090302810 | System and method for electric current and power monitoring and control of a generator - A control device measures a voltage drop across a conductor in a generator to determine and control the total generator output current. A temperature of the conductor is also measured to improve the accuracy. The control device may further improve on the accuracy by compensating for the electrical current through a field coil that may power the generator. The control device may be used in combination with a generator in a vehicle electrical system. Other system parameters may be monitored to improve on the system monitoring, diagnostics, and control. The generator may include a conductor comprising a process-controlled geometric shape. | 12-10-2009 |
20100039073 | ADAPTIVE FIELD CONTROL OF A VARIABLE FREQUENCY SYNCHRONOUS GENERATOR - A voltage regulator with an adaptive field discharge control system may use the rate of change of the POR voltage, the rate of change of the output current and rate of change of the field current, or any combination of these, as an input. The adaptive field discharge control system may process the inputs, identify an operating condition, such as unbalanced load, overcurrent and overload, and compare reference setpoints against that condition. Conventional field control circuits may be triggered by a fixed POR voltage setpoint for all operating conditions. In addition, conventional field control circuits may trigger field discharge to turn on and off continuously during systems oscillations. To avoid these issues, the adaptive field control circuit of the present invention may include a variable POR voltage setpoint, based upon one or more of the rate of change in the POR voltage, the DC bus voltage, or the percentage of unbalanced load. This invention can be extended for any More Electric Vehicle applications. | 02-18-2010 |
20100194356 | WELD SETTING BASED ENGINE-DRIVEN GENERATOR CONTROL SYSTEM AND METHOD - A system and method are provided for controlling an internal combustion engine driving a generator/welder or a stand-alone generator. The engine and/or the generator is controlled based upon settings for welding. Controlling the engine may include altering the engine speed based upon a detected demand on the generator and/or operating parameters of a welder. | 08-05-2010 |
20120112708 | Control Device for Doubly-Fed Induction Generator in Which Feedback Linearization Method is Embedded - The present invention relates to a control device for a doubly-fed induction generator in which a feedback linearization method is enabled and further provides a control device for a doubly-fed induction generator in which a feedback linearization method is embedded, characterized in that the control device divides and measures positive sequency components and negative sequency components from stator voltage and current, rotor voltage and current, and signals of stator magnetic flux and rotor magnetic flux of the doubly-fed induction generator. | 05-10-2012 |
20130033237 | POWER GENERATION CONTROL SYSTEM FOR VEHICLE - A power generation control system for a vehicle may include a battery supplying power to an electric load, a power generator supplying power to the battery and the electric load, and an electronic control unit (ECU) controlling the power generator in real time, based on driving information inputted from outside, battery information inputted from outside, and an efficiency map of the power generator, which may be predetermined by an efficiency map of an engine and built in the power generator. | 02-07-2013 |
20140266077 | VARIABLE SPEED CONSTANT FREQUENCY SYSTEM WITH GENERATOR AND ROTATING POWER CONVERTER - An electric power generating system includes a brushless wound field synchronous generator with n-number of power generating channels and n-number of bidirectional switches alternatively controlled to provide ac power at the output. Each power generating channel includes a control rotating transformer, a rotating power converter supplying power to field winding from the rotating power supply, and a center-tap single phase armature winding connected to the bidirectional switches. Rotating power converter modulates current in the field winding to obtain desired frequency and phase at the system output. | 09-18-2014 |
20160049891 | Protective Functions for Parallel Generators - A generator system may include two or more generators electrically connected through a generator bus. A controller receives operation data from a first generator. The operation data may describe a power flow from a second generator to the first generator. From the operation data, either a loss of speed control or a loss of voltage control may be identified at the second generator. The controller may generate a command for the second generator based on the loss of speed control or the loss of voltage control. | 02-18-2016 |