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WO/2008/105433A1 |
An induction motor vector controlling device so structured that the current is divided into an exciting current component and a torque current component, and the current components are independently controlled. The vector controlling dev...
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WO/2008/097743A1 |
Airflow rates within a ventilation system are controlled using motor speed or torque and motor electric current or pressure. Fan speed or torque may be varied to compensate for differing restriction in ductwork, and may provide a constan...
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WO/2008/096034A1 |
The invention discloses a method for controlling an electric drive that drives reels of a slit ter in the paper machine. In the method at least speed and acceleration/deceleration of a slitter is controlled. According to the invention a ...
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WO/2008/096523A1 |
An inverter control device includes a current-following PWM control circuit which directly generates a PWM signal in which currents id, iq follow current references id**, iq** according to the result of comparison of inverter output curr...
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WO/2008/072574A1 |
Provided is an AC motor control device capable of realizing stable operation not depending on the motor type or the load condition. The AC motor control device controls d-q axis current according to a speed instruction frequency so as to...
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WO/2008/070633A2 |
In one embodiment, the present invention describes a gate closure system 5 having a barrier or gate operator for moving a gate 15 between a gate fully opened position and a gate fully closed position. The gate closure system 5 preferably...
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WO/2008/065978A1 |
Provided is an induction motor control device which is robust even if the secondary resistance is fluctuated by a temperature fluctuation. The induction motor control device includes: an inverter circuit (1) for driving an induction moto...
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WO/2008/065719A1 |
[PROBLEMS] To propose a controller of an AC rotating machine in which a stabilized rotational angular frequency estimate value can be obtained even in the extremely low speed region of an AC rotating machine and stabilized control can be...
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WO/2008/061575A1 |
An electric motor (12, 12') has a sensor, in particular a Hall sensor (16), at which at least one terminal (88, 92) is provided. A programmable ASIC (22) is associated with the motor (12, 12'), which ASIC can be programmed by a programmi...
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WO/2008/053675A1 |
An electric motor car control apparatus has a speed sensorless vector control means (11) that estimates, from the output voltage command and output current of a VVVF inverter (6), a rotational speed of an AC electric motor (7) and contro...
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WO/2008/053554A1 |
An electric motor car control apparatus has a speed sensorless vector control means that estimates, from the output voltage command and output current of a VVVF inverter, a rotational speed of an AC electric motor and controls, based on ...
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WO/2008/052388A1 |
A control method of electromotor comprises the following steps: setting an alternating axis target current according to the rotor angle velocity of the motor and setting a direct axis target current according to the torque of the motor; ...
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WO/2008/047430A1 |
A power converter comprising a converter for converting AC power into DC power, a converter controller for controlling the output voltage of the converter, an inverter for converting the DC power into AC power of variable frequency, an i...
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WO/2008/041395A1 |
An algorithm for increasing a powering torque outputted when a target torque To is outputted in the same direction as the operating direction as the controlled variable X of an operating lever (2) increases and for decreasing the powerin...
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WO/2008/026270A1 |
Provided are an electric motor driving device which is constituted either to reduce the capacity of a condenser for smoothening a DC voltage after an AC power source was rectified or to eliminate the condenser, thereby to reduce the size...
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WO/2008/026249A1 |
An AC motor vector control apparatus includes a damping control part that provides an automatic calculation of optimum damping manipulation amount to eliminate the necessity of a gain setting itself, thereby simplifying the adjustment op...
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WO/2008/023779A2 |
The single-phase brushless motor according to one aspect of the present invention includes a coil array having a plurality of magnetic coils 11 -14; a magnet array having a plurality of permanent magnets 31 -34; a magnetic sensor 40 for ...
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WO/2008/023688A1 |
A motor driver performing improved control of driving an AC motor. On receiving a drive signal outputted from a microcomputer (1), a phototriac (7) supplies an AC current from an AC power supply (E1) to an AC motor (M1). Only when the va...
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WO/2008/020501A1 |
The detection signals of odd-numbered phases outputted by a phase current detecting sensor of a multiphase motor are sequentially digital converted to phase current data at intervals Δtp. A digital conversion midway in the order of thos...
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WO/2008/020500A1 |
When the rotational speed ω is in the predetermined speed range -ω1 ≤ ω ≤ +ω2 including the rotational speed 0 at which the target current id*, iq* assigned to a target torque T* are discontinuously changed, the target current id...
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WO/2008/014855A1 |
Drive comprising an electric motor (M) which is fed by a converter (SR), wherein the converter comprises a discrete-time control structure which controls the stator current of the electric motor by means of adjusting the voltage (U) appl...
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WO/2008/013000A1 |
An inverter comprises an LC filter having a diode bridge (21) for rectifying a received three-phase voltage to a DC voltage, an inverter section (22) for converting the DC voltage converted by the diode bridge (21) into an AC voltage for...
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WO/2008/004177A2 |
The invention is directed to a method for controlling a deceleration process of a DC motor (20), wherein the DC motor (20) is driven by a bridge driver (18) coupled to a power supply (12) intended to provide a supply voltage VDD at a pow...
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WO/2008/004294A1 |
An induction motor vector control device comprises secondary magnetic flux command computing means (40) for computing a secondary magnetic flux command (φ2*) from the torque command (Tm*), DC voltage (Efc), and the angular frequency (ω...
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WO/2008/004417A1 |
A rotating machine sensorless control apparatus comprising an inverter (05) that converts DC and AC powers to each other; a permanent magnet synchronous machine (07) the rotator of which has a magnetic saliency and which is driven by a p...
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WO/2008/004316A1 |
There are included a secondary magnetic flux command calculating means (40) that calculates, based on an externally given torque command, a DC voltage to be inputted to an inverter, and based on an inverter angular frequency that is the ...
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WO/2008/004419A1 |
A current instruction generation unit (102) generates a d-axis current instruction (Id*) and a q-axis current instruction (Iq*) according to an AC motor torque instruction (TR) by using a map in which a current instruction capable of red...
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WO/2008/001445A1 |
[PROBLEMS] To propose an AC rotating machine controller for suppressing a great variation of the amplitude of an AC phase current even a variation of the temperature of an AC rotating machine and capable of stable starting the AC rotatin...
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WO/2008/001615A1 |
There is provided an electric motor driving device operable with up to a high load while improving the efficiency of an inverter. The electric motor driving device comprises a voltage conversion circuit (2) for changing a DC voltage valu...
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WO/2007/144959A1 |
A power converter control circuit includes: voltage instruction means for generating a voltage instruction signal; power instruction compensation means for compensating the voltage instruction signal and generating a compensation voltage...
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WO/2007/141948A1 |
A rotor (11) has a main permanent magnet mounting layer (21) in which main permanent magnets (21a) are mounted, a first sub-permanent magnet mounting layer (22) in which first sub-permanent magnets (22a) are mounted, a second sub-permane...
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WO/2007/141084A1 |
The invention relates to a starting procedure for a DC motor which is operated in a polyphase form and has no sensors and brushes, in which the DC motor is accelerated to a switching rotation speed in an open operating mode without knowl...
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WO/2007/138644A1 |
There are included a VVVF inverter (1) that exchanges powers with an AC rotating machine; a voltage detector (16) that detects voltage information of the DC side of the inverter (1); a current detector (3) that detects current informatio...
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WO/2007/131667A1 |
The invention proposes a drive system for an electronic domestic appliance, for example a washing machine, a dryer or a dishwasher, said system having an electric motor and a motor controller for controlling operation of the electric mot...
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WO/2007/126024A1 |
Provided is a servo motor control device capable of improving current control loop response and preventing vibration of a servo motor. The servo motor control device includes: current detection means for detecting an output current value...
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WO/2007/125669A1 |
It is possible to prevent change of characteristic of a control system and stably drive a motor-driven device. A motor-driven control device includes current instruction value calculation processing means for calculating a current instru...
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WO/2007/119755A1 |
It is possible to provide a motor control device capable of suppressing fluctuations of voltage synthesis vector and improving output of a brushless motor and a motor-driven power steering device using the same. The control device calcul...
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WO/2007/115907A2 |
The invention relates to a drive and evaluation unit for displacing a displacement object, particularly for raising and lowering a side window in a motor vehicle, comprising a commutator motor, a stator and two diametrically opposed perm...
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WO/2007/114109A1 |
An AC motor driving apparatus which can utilize a conventional PWM system as it is, even for a microminiature motor having extremely small number of turns of an exciting coil without generating vibration or noise. An AC motor control met...
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WO/2007/113859A1 |
The present invention relates to a control device for an asynchronous electric motor comprising a microcontroller suitable for generating a pulse width modulation (PWM) control signal for controlling an electronic power circuit. The micr...
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WO/2007/104282A1 |
The invention relates to a device for the simultaneous simulation of the symmetrical and asymmetrical impedance of an asynchronous machine. The device has three sub-circuits for simulating the three phases of the asynchronous machine. Ea...
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WO/2007/102503A1 |
Provided is an earth-fault detecting method for detecting an earth fault having occurred in a motor, by using the existing inverter. When the earth fault occurs in a three-phase motor (10), the terminal voltage of a smoothing condenser (...
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WO/2007/097183A1 |
An electric motor control apparatus for performing a variable speed control of an electric motor, wherein the gain of a proportional-plus-derivative controller using a current feedback is adjusted on-line, based on an electric constant a...
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WO/2007/086200A1 |
A torque command (Tht) used in the calculation of a voltage command (Vht) of a voltage-up converter is generated by adding an upper limit value value (Tc_max) of damping control that can be set by a motor drive device with a target drive...
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WO/2007/072365A1 |
An adaptive system for a personal care appliance, such as a power toothbrush, having a workpiece which is driven through an amplitude of motion by a drive mechanism which includes a stator member includes a circuit (13) for measuring ave...
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WO/2007/066182A1 |
In the rectangular-wave voltage control mode, torque feedback control, in which the voltage phase (ϕv) of the rectangular-wave voltage is adjusted based on the deviation of the torque estimated value (Trq) from the torque command value ...
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WO/2007/063366A2 |
The invention relates to a processing unit of a measuring signal related to conditions of an object controlled by power electronics. The processing unit comprises an interface with digital terminals, wherein the interface is provided wit...
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WO/2007/049810A1 |
In a system for driving an AC motor in which motor current is feedback-controlled, normally, a motor current instruction is generated according to a torque instruction value on the optimal efficiency characteristic line (CL0) so as to se...
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WO/2007/047143A1 |
A system, method, and device for monitoring an AC induction motor are disclosed. The exemplary system provides the architecture of an intelligent motor controller. On one hand, the controller has self-commission and adaptive tuning capab...
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WO/2007/014725A1 |
The invention relates to a safety switching unit, with which a safety device, preferably an electric drive, can be controlled into a safe state. The safety switching unit (900) comprises a microprocessor or microcontroller (822) that, fo...
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