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WO/2005/081397A1 |
There is provided a motor-driven power steering device control device for suppressing motor vibration and noise caused by the torque ripple occurring when the motor is subjected to field-weakening control or based on the motor circulatin...
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WO/2005/076458A1 |
The electronic device (10) for controlling a motor (1), the three phases (A, B, C) of which are driven by a motor driver (2), comprises detection means (3) and a control circuit (4). The detection means comprise three high-gain different...
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WO/2005/076461A1 |
The invention proposes a system for driving a compressor, comprising an induction motor (2) for driving the compressor (3), said induction motor including a squirrel cage rotor, and a controller (1) for controlling the induction motor, s...
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WO/2005/074104A1 |
Three-phase AC speed adjustable motor, relates speed adjusting techniques in the field of electrical engineering. Said three-phase AC speed adjustable motor is composed of an AC motor and a counter electromotive force generator which is ...
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WO/2005/074118A1 |
A brushless motor start method includes: an initial position moving step (ta to tc) for rotating/moving a rotor to a predetermined initial position by DC excitation; forcible commutation step (tc to td) for performing electrical connecti...
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WO/2005/069475A1 |
There is provided a control device for a motor-driven power steering device capable of reducing the torque ripple during motor rotation by a simple calculation so as to perform smooth and safe assist limit without lowering the steering f...
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WO/2005/067133A1 |
A motor drive inverter control apparatus comprises a rectifier circuit for rectifying an AC power supply; an inverter circuit driven by an output of the rectifier circuit; a motor driven by an output of the inverter circuit; a first capa...
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WO/2005/066648A1 |
The present invention discloses a method for measuring the operating state of a synchronous motor using composite power angle meter.1t includes the following steps: a, obtaining all kinds of signals of the synchronous motor as well as th...
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WO/2005/067137A1 |
A motor controller wherein a superimposition signal generating section (9) outputs a superimposition signal idh of repetitive waveform such as a triangular wave or a sine wave during motor speed control, a d-axis current command generati...
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WO/2005/067132A1 |
Static frequency converter with automatic function for optimizing magnetic flux and minimizing losses in electric induction motors, which is characterized for having an automatic function for regulating and controlling magnetic flux in t...
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WO/2005/062141A1 |
The invention relates to a three-phase asynchronous electric motor (1) for domestic appliances, comprising power elements (2), such as triacs (2a) or relays (2b), for charge control. The power elements (2, 2a) other than the relays (2b) ...
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WO/2005/049408A1 |
The problem that when weak magnetic field control of the motor of an electric power steering device is carried out, the motor produces noise to worsen the environment in the car is solved. If the car speed is high, the noise produced bec...
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WO/2005/048446A1 |
Disclosed is a braking method for a synchronous machine (1), wherein rotor windings (u, v, w) of the synchronous machine (1) are short-circuited, optionally with the insertion of at least one brake resistor (18). In order to keep the bra...
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WO2004106143A9 |
A controller for an electric power steering device having reduced control error and stable controllability, having reduced torque ripple of motor output, providing excellent steering feeling by a steering wheel, and having reduced motor ...
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WO/2005/041397A1 |
Resistance of the coil of a DC motor is calculated by using the motor current and the motor voltage, and the coil temperature is estimated by using the resistance-temperature characteristics of the coil.
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WO/2005/039035A2 |
It is possible to control the DC intermediate voltage to be constant without using a device for returning regenerative resistance or regenerative energy to a power source and to safely continue operation of an AC motor even if an instant...
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WO/2005/034335A1 |
There is provided a motor operation control device capable of performing stable speed control even at a low rotation speed near to zero. A power conversion unit (3) converts DC current to AC current for supply to a motor (4). Current det...
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WO/2005/034328A2 |
An induction motor drive system and method estimates a motor power factor based on the AC power output to the motor phase windings and estimates the rotor speed based on the estimated power factor. The estimated rotor speed is compared t...
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WO/2005/031963A1 |
A method and device are presented for controlling the operation of an AC motor. The controlling consists in adjusting a frequency f of a driving voltage supplied to the motor. This is achieved by transforming an input harmonic voltage si...
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WO/2005/025047A1 |
A map holding unit (89) holds, in the form of a map, a voltage control amount (Vq&lowbar map) of the q axis in a case where no demagnetization of a permanent magnet motor (60) occurs. Based on a motor revolution number, namely the number...
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WO/2005/025045A1 |
A motor controller in which control parameters can be readily and accurately adjusted, speed and accuracy of response of a motor controller are improved, and vibration is suppressed to a low level. A control constant identifying section ...
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WO/2005/025046A1 |
The invention relates to a method and to a circuit arrangement used to regulate synchronous linear motors, especially linear drive mechanisms in film drawing systems. The force (Fclip) between the stationary primary part (20) and the mov...
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WO/2005/025049A1 |
A controller of a rotating machine comprises integrator means (11) for integrating the primary angular frequency given according to an angular velocity command and calculating the phase, converter means (14) for applying three-phase volt...
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WO/2005/018086A1 |
The invention relates to a method for the controlled application of a stator-current target value (ISsoll) and a torque target value (Msoll) for a polyphase machine (4) that is supplied by an electronic power converter. According to the ...
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WO/2005/008879A1 |
A device for estimating the pole of a double salient pole motor with high accuracy by eliminating the effect of the double salient pole of the motor, i.e. the effect of axial shift of an alternating current due to the rotor pole position...
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WO/2005/006537A1 |
An electric motor movement controlling method, the electric motor being fed by a total voltage (VT) proportional to the network voltage (VAC), the method comprising steps of making a first measurement of level (Vt10) of the network volta...
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WO/2004/114511A2 |
A control device (30) receives power source current (Ib) from a current sensor (11) and reactor current (IL) from a current sensor (18). According to the reactor current (IL), the control device (30) detects a maximum value (ILmax) and a...
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WO/2004/109310A1 |
A device for determining the constant of a rotating machine comprises test number selecting means (1) that outputs a test number (n) which is any one of numbers 1 through N, where N is equal to or greater than two, and that outputs a pha...
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WO/2004/109903A1 |
The invention relates to a control device (1) for an alternating current motor which rotates in two directions and is used for a regulating system. The inventive controll device (1) comprises a switch for switching-on or -off said altern...
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WO/2004/107556A1 |
A method in connection with a doubly-fed machine, the machine comprising a stator, which is connected to a power network, and a rotor, which is connected through an inverter to the network. The method comprises the steps of determining t...
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WO/2004/107537A1 |
A system and method for assembling machines using multiple, structurally equivalent components. The characteristics of each component are tested. The tested components are sorted into component classes using the test information. Individ...
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WO/2004/107555A1 |
The invention relates to motor control unit (1) for adjusting the number of revolutions and/or the torque of an electric motor (7) comprising a control device (2) provided with a first externally controlled serial communication bus (10) ...
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WO/2004/100350A1 |
There is provided an energy saving service including: a service contract making step for making a service contract with a customer who has purchased or who is going to purchase a product using a permanent magnet electric motor; a drive d...
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WO/2004/093287A1 |
A variable speed drive control system operates a variable speed drive to power a first load from a power source simultaneously powering a second load. An AC reactive power is monitored which may comprise or consist of an AC reactive powe...
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WO/2004/093302A2 |
There is provided a disconnection detection method capable of reducing the delay of the motor power line disconnection detection. The motor power line disconnection method for an AC servo driver having a current detector and a torque con...
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WO/2004/082105A1 |
A field current estimator for estimating the field current in a brushless excited synchronous apparatus comprising an exciter having a stator part and an rotor part comprising a rectifier, and a machine having a stator part and a rotor p...
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WO/2004/082125A1 |
Phase inversion timing detecting means (31) of a motor controller compares the value of the integration term of the d-axis component vds* of a two-phase voltage command outputted from d-axis current control means (28) with the previous v...
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WO/2004/082114A1 |
A motor controller comprising a temperature variation estimating section (11) for operating the temperature variation amplitude (108) by estimating the temperature variation of a semiconductor element in a switching circuit (5) based on ...
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WO/2004/082120A2 |
A method and device for sensorless vector control for an AC motor enables agreement of a speed estimate or a magnetic flux estimate of a full-dimensional magnetic flux observer with the actual values of the AC motor. The AC motor control...
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WO/2004/082123A1 |
There are provided an AC motor control method and device capable of continuously operating an AC motor without increasing the main circuit voltage up to the excessive voltage level without using a device for feeding back the regenerative...
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WO/2004/079891A1 |
An arrangement and a method for starting a slip-ring machine (21), the arrangement comprising a frequency converter (26) arranged to be connected between a supply network (27) and a rotor (34) of the slip-ring machine for controlling the...
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WO/2004/073158A1 |
A control system for motors, generators and other electric machines that improves machine performance by dynamically adapting to changes. These changes may be in user inputs, machine operating conditions and/or machine operating paramete...
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WO/2004/073152A2 |
A motor controller by which out-of-control can be correctly detected in a short time by a simple calculation using a controlled variable of a motor and the safety of a machine such as a crane can be improved. The coordinate system of the...
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WO/2004/073155A1 |
Improved in-wheel, near-wheel and direct-drive electric motors for cars and other vehicles. This motor can be cheaper, lighter, more powerful, more efficient, and more reliable than other direct-drive motors. Its high torque-density and ...
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WO/2004/070402A1 |
A harmonic diagnosing method for an electric facility, wherein a diagnosing method judges a deterioration by determining an index value obtained by dividing a relative harmonic content at each degree of current harmonic running through m...
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WO/2004/066482A2 |
A control system for any type of electric motor that automatically learns the characteristics of the motor and computes a motor model for the motor. The control system uses the computed motor model to produce a closed-loop control design...
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WO/2004/057750A1 |
The invention relates to a device which is connected to an alternating current power source (AC/H, AC/N) and which comprises: a two-winding (W1, W2) induction single-phase electric motor (MOT), a phase-shifting capacitor (CM) which is di...
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WO/2004/051840A1 |
Method for defining quadrature-axis magnetizing inductance of a synchronous machine, the synchronous machine being supplied by an inverter. The method comprises steps, wherein the synchronous machine is started without load or with reduc...
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WO/2004/049554A1 |
A motor and a drive control device used for a brushless DC motor which produces a small torque ripple, is small in size, and produces a small motor noise, even when a trapezoidal wave current is supplied, and a motor power steering devic...
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WO2004036755A9 |
A space vector pulse-width modulator (SVPWM) and a method implemented by the modulator. A precalculation module accepts Ua and Ub modulation indexes and in response thereto, outputs modified Ua and Ub information; a sector finder has a U...
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