| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 322028000 |
Voltage of generator or circuit supplied
| 76 |
| 322022000 |
Plural conditions
| 64 |
| 322029000 |
Speed or frequency of generator
| 28 |
| 322021000 |
With line-drop compensation
| 19 |
| 322019000 |
Antihunting or rate of change
| 17 |
| 322027000 |
Current output
| 13 |
| 322020000 |
Power factor or phase relationships
| 12 |
| 322033000 |
Thermal conditions
| 10 |
| 322037000 |
Electrical conditions in circuit other than that of generator being controlled | 5 |
| 20090045783 | 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 generator. The controller obtains data from which both a present output power of the generator and a power capacity of the generator can be determined. The controller then provides the intelligent load with data indicative of both the present output power and the power capacity of the generator for use by the load in controlling its power consumption. | 02-19-2009 |
| 20090146616 | Method of Automotive Electrical Bus Management - A method for managing a vehicle's electrical power bus and charging system. A current sensor is utilized to measure a current produced by an alternator. The alternator current is controlled in a feedback system such that the current is equal to the amount required for the vehicle loads or, if the battery is being charged, the amount required for the vehicle loads plus the optimum charging current. Alternatively, the method may measure and control the amount of current delivered to and from the battery such that, in a fuel efficiency mode, no current is delivered to the battery. | 06-11-2009 |
| 20090184693 | ACG OUTPUT VOLTAGE CONTROL - A generator control system is provided in a vehicle having an engine that drives an electric power generator arranged to selectively provide electric power to an electrical load of the vehicle and to selectively charge a battery of the vehicle. The generator control system includes: a sensor that detects a state of charge (SOC) of the battery; and, a controller that controls a voltage output mode of the generator in response to the SOC detected by the sensor. | 07-23-2009 |
| 20110050182 | GENERATOR DEVICE WITH OVERVOLTAGE MONITORING - A generator device with a generator regulator and a generator unit having a generator and a rectifier arrangement. The generator regulator has an operating voltage connection and a phase voltage connection. Furthermore, if during a control intervention of the phase voltage the DC voltage applied to the operating voltage connection exceeds a predefined limit for a predefined period of time, the generator regulator deactivates the control intervention of the phase voltage. | 03-03-2011 |
| 20130207620 | Adaptive Controller for STATCOM to Enhance Voltage Stability - An adaptive controller for a static compensator (STATCOM) to enhance voltage stability comprises an outer voltage regulator loop and an inner current regulator loop. Each of the outer loop and the inner loop comprises a proportional integral controller. The outer loop adjusts proportional and integral control gains of voltage regulator. The inner loop adjusts proportional arid integral parts of current regulator gains. The automatic adjustment of these regulator gains is adaptively determined such that the voltage at the controlled bus follows a desired voltage, reference curve over time returning to a desired steady-state condition under various disturbances such as changes in load and/or transmission network. Thus, the adaptive controller can achieve a plug-and-play feature for a STATCOM without human intervention. | 08-15-2013 |
| 322035000 |
Fluid pressure including wind | 2 |
| 20090284231 | Electric generating system with energy transfer device - This invention provides an electric generating system with energy transfer device for accumulating and transferring the compressed medium to produce driving force for generating electric power. Once the electric generator start generating electric power, the driving force can be transmitted simultaneously to a medium compressor to compress the medium in the pressure reservoir for accumulating pressure. The compressed medium can be released automatically and properly to push the fan wheel to rotate by a pressure release valve when the driving force of the electric generator is stopped so as to provide extra driving force to operate the electric generator continuously. | 11-19-2009 |
| 20160072363 | CONTROL SYSTEM FOR HYDRAULICALLY POWERED AC GENERATOR - Systems and methods for use in controlling a hydraulically powered AC generator are provided. One control system includes a valve system. The valve system includes a fixed valve configured to provide a substantially constant flow rate of the fluid through the fixed valve to the hydraulically powered AC generator. The valve system further includes a variable valve configured to provide a variable flow rate of the fluid through the variable valve to the hydraulically powered AC generator. The control system further includes a sensor device configured to measure a speed of movement of a component of the hydraulically powered AC generator. The control system further includes a control circuit configured to control the variable flow rate of the variable valve based on the speed of movement of the component measured by the sensor device. | 03-10-2016 |
| 322018000 |
With time-delay in the response | 2 |
| 20090058372 | Voltage controller for vehicle using averaged status signal - In a voltage controller for a vehicle, voltage controlling means controls an output voltage of a power generator mounted on the vehicle and a terminal voltage of a battery connected to the power generator, by controlling of a field current passing through a field winding of the power generator. This control is performed by operating switching means connected to the field winding so that the switching means is conducted intermittently. Signal generating means generates a power generator state signal by measuring a state of the power generator at predetermined measurement periods. Signal averaging means performs an exponentially weighted averaging of the power generator state signal. The signal averaging means executes the averaging within a predetermined averaging period and updates the averaging at every predetermined measurement period. | 03-05-2009 |
| 20090251110 | Method and apparatus for controlling electric power generation for vehicles - The present invention provides, as one aspect, an apparatus for controlling electric power generation for vehicles, which controls energization of an excitation winding of a generator driven by an internal-combustion engine controlled by a controller to control output voltage of the generator. The apparatus includes a restraining unit that restrains electric power generation of the generator in response to a given signal, and a releasing unit the releases the restraint by the restraining unit when generated voltage of the generator is equal to or less than a first predetermined value. The apparatus further includes a detecting unit that detects starting of the internal-combustion engine, a measuring unit that measures elapsed time from the detection of the starting by the detecting unit, and a prohibiting unit that prohibits the release of the restraint by the releasing unit until a predetermined time is measured by the measuring unit. | 10-08-2009 |
| 322036000 |
With respect to a reference or master device or quantity | 1 |
| 20100097039 | REGULATOR ADAPTED TO VARIOUS VEHICLE ALTERNATORS - Provided is a regulator adapted to the various vehicle alternators of the present invention. The regulator particularly includes a coding circuit and a control circuit. The coding circuit is used to provide the different selectable codes. A laser trimming technology is introduced to form an open circuit over the coding circuit, in order to set a code. The control circuit is used to predetermine the various function selections in accordance with the various codes. The coding circuit includes an amplifier, a first input resistor, and a second resistor. The first input resistor is interconnected to a high-voltage end and an input end of the amplifier in series. The second input resistor is further interconnected to the input end and a low-voltage end in series. The open circuit is particularly formed on the first input resistor or the second input resistor for regulating the output voltage and setting a code. | 04-22-2010 |
| Entries |
| Document | Title | Date |
|---|
| 20080284384 | VEHICLE-USE POWER SUPPLY CONTROL APPARATUS - The vehicle-use power supply control apparatus includes a first battery supplying electric power to a load, an alternator driven by a vehicle engine, a second electric accumulator parallel-connected to the first battery, an electric power converter performing two-way power transmission between the first and second batteries, and a power supply control unit. The power supply control includes a function of setting a target power generation efficiency index, a function of setting a target power generation amount of the alternator on the basis of the target power generation efficiency index, while referring to a map defining relationship between a power generation efficiency index and a power generation amount of the alternator, and a function of controlling an amount and a transmission direction of transmission power of the electric power converter in order that an amount of electric power generated by the alternator becomes equal to the target power generation amount. | 11-20-2008 |
| 20090045782 | POWER CONVERSION SYSTEM - A power conversion system includes two three-level converters, and a phase shifted transformer coupled to the converters. | 02-19-2009 |
| 20120326676 | METHOD AND ARRANGEMENT FOR IMPROVING THE PERFORMANCE OF A SAFETY-CRITICAL VEHICLE ACTUATOR - Embodiments herein relate to an arrangement and method for improving the performance of a safety-critical vehicle actuator, in particular a safety-critical vehicle actuator powered directly or indirectly from a vehicle electrical system. The safety-critical vehicle actuator is arranged to, upon activation thereof, signal to an alternator of the vehicle to output a raised voltage for a pre-determined time period. | 12-27-2012 |
| 20130043845 | METHOD FOR OPERATING A WIND TURBINE IN THE EVENT OF THE OCCURRENCE OF A GRID FAULT WITH A VOLTAGE DROP AND SUCH A WIND TURBINE - A method for operating a wind turbine when a grid fault with a voltage drop occurs. The turbine has a rotor with a rotor blade having an adjustable blade pitch angle, a generator connected to the rotor for generating power for a power grid and a converter connected to the generator and the power grid. The grid fault is identified and a present value of a turbine variable representing a power is detected and a hold setpoint for the variable representing a power of the turbine is preset. A maximum and/or minimum permissible setpoint for the variable of the turbine is determined. The setpoint is increased or reduced once the hold time has elapsed. The turbine is driven with a setpoint preset which corresponds to the rotational speed. A presetting of the maximum permissible setpoint is ended when the rotational speed-dependent setpoint is lower than the maximum permissible setpoint. | 02-21-2013 |
| 20140285160 | On-Demand Electric Power System - An on-demand electric power system for providing on-demand electric power in remote locations. The on-demand electric power system generally includes a protective housing, an engine-generator within the protective housing, a control switch electrically positioned between the engine-generator and an electric load, and a control unit in communication with the engine-generator and the control switch to control operation of the engine-generator along with electrical power to the electric load. The control unit detects when electrical power is required by an electric load and then first starts the engine-generator. After a period of time, the control unit then closes the control switch to provide electrical power to the electric load. | 09-25-2014 |
| 20160149527 | Alternator Rotor Controller - In one embodiment, an apparatus includes a rotor-mounted memory and a rotor-mounted controller. The rotor-mounted memory is configured to store sensor data indicative of the operation of a generator. The rotor-mounted controller is configured to access the sensor data from the rotor-mounted memory, perform an analysis of the sensor data, and generate a generator command at the controller based on the sensor data. The apparatus may be a generator configured to convert mechanical energy to electrical energy. | 05-26-2016 |
