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Matches 301 - 350 out of 9,262

Document Document Title
WO/2011/092408
The invention relates to a polyphase electrical machine (30), which is controlled by means of at least two inverters in parallel (101, 102), wherein each inverter has branches (101a, 101b, 101c, 102a, 102b, 102c), in a number equal to th...  
WO/2011/093281
Disclosed is a motor control device that can realize broad and highly functional characteristics with simple computations, and that responds widely to applications having a request wherein a request for an operation such as motor positio...  
WO/2011/086946
An electric operating machine comprising a motor and a power circuit driving the motor by the electric power supplied from a battery. The power circuit comprises a voltage conversion part converting an input voltage entered in accordance...  
WO/2011/086019
A fault tolerant electrical machine (40) for use in a gas turbine engine comprising: a plurality of phases (50A-D); a detector (52A, 52B, 52C, 52D) arranged to detect a short-circuit fault in at least one of the phases (50A-D); and a con...  
WO/2011/085837
The invention relates to a method for fault recognition in an electric motor (1) actuated by an inverter (2) in a motor vehicle, wherein the phase currents (Iu, Iv, Iw) of the electric motor (1 ) are determined, in particular measured, a...  
WO/2011/086019
A fault tolerant electrical machine comprising (40): a plurality of phases (50A-D); a detector (52A,52B,52C,52D) arranged to detect a fault in at least one of the phases (50A-D); and a controller (52A,52B,52C,52D) arranged to intentional...  
WO/2011/085882
The invention relates to a method for operating a mains-operated electric motor (2) for a power tool using switches, in particular semiconductor switches (1, 3), wherein the operation of the switches is monitored using an electronic cont...  
WO/2011/086994
Provided is a control device for fan filter units or the like. In an emergency, when an anomaly has occurred in a motor or motor control device, the provided control device immediately analyzes the anomaly and performs prompt, situation-...  
WO/2011/086945
The power circuit comprises a voltage conversion part converting an input voltage entered in accordance with a voltage of a power source to generate an output voltage and outputting the generated output voltage to the motor and a current...  
WO/2011/080240
The present invention relates to a variable speed hermetic compressor (1) providing the refrigerant cycle to be performed, comprising a motor (2) fed by the mains voltage (Vac), a main winding (AS), an auxiliary winding (YS), a first swi...  
WO/2011/080240
The present invention relates to a variable speed hermetic compressor (1) providing the refrigerant cycle to be performed, comprising a motor (2) fed by the mains voltage (Vac), a main winding (AS), an auxiliary winding (YS), a first swi...  
WO/2011/078318
Provided is a malfunctioning-factor evaluation supporting apparatus that prevents situations wherein unnecessary exchanging of motors occur when the motors are not actually malfunctioning. The malfunctioning-factor evaluation supporting ...  
WO/2011/077927
Disclosed are a motor control device which enables robustness of the whole control even against motor parameter fluctuations caused by temperature changes, manufacturing variations, and the like, and against disturbance, and an electric ...  
WO/2011/077789
A control unit (100) conducts a servo control of a table (02), which is the load, by conducting a feedback control of a servomotor (40). An inverse characteristic model (300) conducts a feedforward compensation control, by obtaining a sp...  
WO/2011/072843
The invention relates to a method for detecting a breakdown in a switching current source (1) comprising a control stage (2) which, on the basis of a set signal, supplies a control signal which, according to a predetermined cycle ratio (...  
WO/2011/070520
A method of protecting a synchronous machine (10) connected to an electricity network (12) against pole-slip comprises the steps of continuously monitoring a power transfer angle (δ) between an electromotive force (EMF) of the machine a...  
WO/2011/069801
An electrical machine (30) comprises a stator (32) including a plurality of electrical phases (34A, 34B, 34C) and a rotor (42) having a plurality of magnets (44). Each electrical phase (34A, 34B, 34C) comprises at least one coil (36) and...  
WO/2011/069725
The invention relates to an inverter assembly for operating an electric motor having a gate (201, 203) for providing an electrical voltage, a bridge inverter circuit downstream of the gate (201, 203) for generating an electrical alternat...  
WO/2011/067337
The invention relates to operating an electric motor (12), wherein a motor actuating signal (W) is generated and transmitted to the motor (12). According to the invention, in order to reduce the noise (Pv) generated by operating the moto...  
WO/2011/062145
Provided is an electric power steering device (100) wherein mechanical friction is electrically provided. A steering torque value (VT3) is detected by a steering torque sensor (30) according to the operation of a steering wheel (2). An a...  
WO/2011/061233
The invention relates to a pitch drive device (26) for a wind power or hydroelectric power station (22) comprising a synchronous motor (13) and a motor operation switchover unit (21) for switching between normal operation and emergency o...  
WO/2011/061187
The invention relates to a method for compensating for disturbance torques in electric work machines. A compensating current for compensating for the disturbance torque is superimposed on a target current to generate a desired target tor...  
WO/2011/061200
The invention relates to a method for reducing load-rejecting overvoltages when operating a synchronous rectifier (29) for a multiphase alternating current having a number of inputs (60.1 to 60.5) corresponding to the number of alternati...  
WO/2011/057838
The invention relates to a method for checking the plausibility of a torque (TrqEmMdl) of an electrical machine (1), which torque is calculated using a machine model, in which method a first value (PwrEmMdl) of an electromagnetic power o...  
WO/2011/054032
A controller for an AC electric motor, includes a Feed Forward Torque Controller and a load model. The Torque controller directly derives a torque related component of applied motor voltages from a signal representing a torque command in...  
WO/2011/052675
A pump unit is provided with pump mechanisms (21, 31, 41), motors (22, 32, 42), an inverter (23), a control unit (24) which controls the inverter (23) and monitors the power level of the motors (22, 32, 42), and a storage unit (25) which...  
WO/2011/047971
The invention relates to an electrically commutated electrical motor having a stator and having an in particular permanent-magnetically designed rotor. The electronically commutated electrical motor also has a control unit which is conne...  
WO/2011/049132
Provided is a clutch control device which permits clutch transmission control without being affected by the influence of variations, due to manufacturing errors, in clutch transmission torque characteristics. The clutch control device co...  
WO/2011/042237
The invention relates to a method for operating a drive unit (1), wherein the drive unit (1) comprises an electric machine (2), which during normal operation is operated by current provided by an inverter (3) on at least two phases (4, 5...  
WO/2011/039901
An electric vehicle control device is used for an electric vehicle comprising a vehicle body having a drive tire and an axle, and a drive motor for applying torque to the drive tire. The electric vehicle control device supplies a motor c...  
WO/2011/040845
An electric motor (100) having a motor control system (400) including: -a current measuring means (402) for directly or indirectly measuring the electric current in the rotor windings (7) providing a rotor current value/s, -an ambient te...  
WO/2011/039006
The invention relates to a method for protecting a motor vehicle generator from overheating, wherein a specified limiting characteristic curve, relating to a base temperature and describing a maximally allowable exciting current value, i...  
WO/2011/036348
The invention relates to a measuring arrangement (1 ), an electric drive (15) and an elevator system (18) for determining the position and/or movement of the rotor (3) of an electric machine (2). The measuring arrangement comprises a mag...  
WO/2011/031784
Embodiments of the invention provide a fire-extinguishing system and method for injecting foamant into a stream of water. The system can include a flow meter determining a flow rate of the stream of water and a foam pump having an inlet ...  
WO/2011/026792
The invention relates to a direct current motor, preferably in the form of an EC-motor, comprising adaptation means in order to modify the speed-torque characteristic curve. Said motor comprises a permanently active control circuit for c...  
WO/2011/027489
A comparison unit compares an expected value with a count result at an end of a monitoring period of a counter for counting the number of pulses of a system clock for each monitoring period. If the comparison result shows a mismatch betw...  
WO/2011/026792
The invention relates to a direct current motor, preferably in the form of an EC-motor, comprising adaptation means in order to modify the speed-torque characteristic curve. Said motor comprises a permanently active control circuit (16) ...  
WO/2011/018527
The present invention relates to an asynchronous generator system for a wind turbine, and a wind turbine having such a system, and the method for operating and starting up such a wind turbine. The asynchronous generator system is thereby...  
WO/2011/018302
The invention relates to a method for monitoring a drive state, particularly a non-driven drive state, of an electric motor supplied with power by means of a bridge inverter having at least one half bridge, comprising capturing a state o...  
WO/2011/012111
The invention relates to a method for operating a magnetic actuator (1) for the transmission and/or generation of torques, said actuator comprising a driving shaft (2) and a driven shaft (3) onto which field-induced forces of a magnetorh...  
WO/2011/012304
The invention relates to a control for electric water pumps comprising an input and an output for electric current and comprising a switching means between the input and the output which applies the output depending on a control in a swi...  
WO/2011/010341
Provided is a current switching device the output of which does not change abruptly even when an induction motor is controlled by using a plurality of current detection sensors. The currents flowing through the respective phases of the i...  
WO/2011/009751
The invention relates to a method for diagnosing current sensors (S1, S2) of an n-phase induction machine (M) having n-1 current sensors, wherein the n phases (U, V, W) of the induction machine are short-circuited for a brief period of t...  
WO/2011/008874
A system for measuring current in an H-Bridge motor drive circuit and using that current to determine the output of a device powered by the motor. A particular embodiment is disclosed for a motor-driven fluid pump. Motor current is measu...  
WO/2011/006528
It is presented a method for detecting faults in a rotating electrical machine. The method comprises the steps of : selecting at least one frequency band to analyse, each frequency band being a frequency band of a measured entity to anal...  
WO/2011/004587
A position control method is provided with a temporary target setting step (S10) for setting a temporary target position that is obtained by adding a position correction amount to a target position, a first movement control step (S11) fo...  
WO/2011/001149
A motor control system has a sensor for measuring an operational parameter of a motor and includes means for converting the measured operational parameter into an electrical resistance value. The operational parameter measured by the sen...  
WO/2010/150846
A rotation control device for a working machine, capable of achieving rotation control in which the working attitude or the working load of a working device is taken into account. A rotation control device for a working machine is provid...  
WO/2010/148657
Disclosed are a network motor and a failure remote data collection and diagnosis system thereof. The system includes a network motor, a communication network and a background computer. The network motor includes a motor body and a motor ...  
WO/2010/150663
Provided is a servo control device that is applied to a numerically controlled device; which is provided with a screw-driven feeding section that converts rotating movements of motors to linear movements, a driven section that is made to...  

Matches 301 - 350 out of 9,262