Class / Patent application number | Description | Number of patent applications / Date published |
322010000 | WITH PHYSICAL STARTING AND/OR STOPPING OF THE GENERATOR | 9 |
20090251109 | SYSTEMS AND METHODS INVOLVING STARTING VARIABLE SPEED GENERATORS - An exemplary method for starting a generator, the method comprising, starting a rotor with an AC voltage across the rotor. Starting a stator. Increasing a speed of the rotor. | 10-08-2009 |
20120146593 | CONTROLLER FOR CONTROLLING POWER GENERATOR DRIVEN BY ROTATIONAL POWER OF ENGINE - In a controller, a voltage controller operates, in an initial excitation mode, to turn selectively on and off a switch to supply an excitation current as an initial excitation current to the field winding, and operates, in a power generation mode, to selectively increase and reduce the excitation current to be supplied to the field winding to regulate an output voltage of the power generator to a target value. A mode-shift determiner determines, while the voltage controller operates in the initial excitation mode, whether to shift an operation mode of the voltage controller from the initial excitation mode to the power generation mode based on: a measured rotation number of a rotor, a threshold rotation number of the rotor, and a preset time period, the time period being equal to or longer than an expected maximum value of cycle of pulsations of rotation of the engine. | 06-14-2012 |
20140125295 | SOFT-START VOLTAGE REGULATING CIRCUIT AND GENERATOR VOLTAGE REGULATING SYSTEM THEREOF - A soft-start circuit composed of active components and passive components and a soft-start voltage regulator based on this soft-start circuit are disclosed. The soft-start voltage regulator is coupled to a generator, a battery and a starter. When the starter is started, the soft-start voltage regulator receives the voltage of the battery to generate a soft-start signal, enabling the generator to establish a voltage. Further, after the generator established the voltage, the soft-start voltage regulator is shut off and the soft-start signal is outputted. | 05-08-2014 |
20150035500 | method for operating a power supply unit for an electrical system of a motor vehicle - A method for operating a power supply unit for an electrical system of a motor vehicle, the power supply unit having an electric generator having a stator having a stator winding and a rotor having a rotor winding, as well as a field current controller assigned to the rotor winding for selecting the setpoint of the current flowing through the rotor winding; the electric generator being set into rotation without a current being specified by the rotor winding, thereby generating a starting voltage; at least one component of the power supply unit or of the vehicle electrical system being energized by the starting voltage. | 02-05-2015 |
322011000 | Automatic in response to predetermined conditions | 2 |
20120249090 | SYSTEM AND METHOD FOR CONTROLLING A TEMPERATURE OF A GENERATOR - According to one aspect of the invention, a system for controlling a temperature of a generator is provided, wherein the system includes a fluid supply in fluid communication with the generator and a heat exchange apparatus in fluid communication with the fluid supply, the generator and a cooling fluid source. The system also includes a first sensor configured to determine a first temperature of a fluid flowing from the heat exchange apparatus to the generator, a second sensor configured to determine a second temperature of the fluid flowing from the generator to the fluid supply and a controller configured to determine an operating limit temperature for the fluid based on the determined first and second temperatures. | 10-04-2012 |
20120274289 | CONTROLLER AND VARIABLE-SPEED GENERATOR-MOTOR STARTING METHOD - In one embodiment, there is provided a controller that performs control to supply driving electricity to a secondary winding of a variable-speed generator-motor from a secondary exciter and thereby start the variable-speed generator-motor from a standstill state in a variable-speed pumped storage system. The controller performs control to complete a start-up by the driving electricity from the secondary exciter and connect the variable-speed generator-motor in parallel with an electric power system, in a state where a rotating speed of the variable-speed generator-motor is lower than a lower limit speed of a variable-speed operation range. | 11-01-2012 |
322012000 | Connecting and/or disconnecting generator and driving means | 2 |
20090184691 | DUAL PURPOSE PERMANENT MAGNET EXCITER - A permanent magnet rotor of a generator is used to excite a permanent magnet stator to generate electric power for the generator and to control a disengagement mechanism whereby the generator can disengage from an accessory, such as a gear box drive shaft, when the generator is not working properly. The permanent magnet is affixed to an outer ball screw which normally rotates with an inner ball screw that is operatively engaged to the accessory. An increased load to the permanent magnet stator slows or stops rotation of the permanent magnet rotor and outer ball screw, causing the inner ball screw to move axially from the outer ball screw and away from an accessory and toward a re-settable lock. | 07-23-2009 |
20090230927 | Fault clearing method for permanent magnet machines - A permanent magnet machine (PMM) has a kinetic portion electrically coupled to a power conversion portion. Motive power is provided to the kinetic portion by a torque applied to a motive shaft coupled to a prime mover, such as an aircraft engine or an automobile engine. A control circuit includes a switch disposed between the kinetic portion and output feeder cables of the power conversion portion. A first sensor is effective to detect a first fault condition in either the feeder cables or the power conversion portion and a second sensor is effective to detect a second fault condition in the kinetic energy portion. The first sensor is effective to open the switch when a first fault condition is detected and the second sensor is effective to apply a voltage to a winding within the kinetic portion generating an opposing counter torque on the motive shaft where a combination of torque and counter torque exceeds a fracture yield strength of said motive shaft causing it to fracture. The second fault condition is then rendered safe while the prime mover may continue normal operation. | 09-17-2009 |
322013000 | Electric motor as driving means | 1 |
20120187923 | METHOD AND ASSEMBLY FOR THE TURNING GEAR OPERATION OF A TURBO SET - An assembly including an electric generator and a steam turbine and an excitation device is provided. The excitation device is designed such that during nominal operation the auxiliary excitation machine is designed as permanently excited synchronous machine and the auxiliary excitation machine is designed as a synchronous motor or turning gear motor in a turning gear operation. | 07-26-2012 |