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WO/2007/007466A1 |
Excessive currents are prevented from occurring in low arm switching elements (Qx,Qy,Qz) even when a voltage occurs in a polyphase load (6) due to an extrinsic cause during a precharging interval. If any of U-phase, V-phase and W-phase c...
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WO/2007/007387A1 |
A controller of a field winding type synchronous motor which can output torque stably even if the d-axis current pulsates by reducing torque pulsation without causing variations in the flux acting on the torque. An electric drive system,...
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WO/2007/001007A1 |
A control system of an inverter performing power conversion between AC and DC is configured as follows. A frequency calculation is performed according to a voltage value of two axes obtained via two current regulators so that the respect...
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WO/2006/131523A1 |
The invention relates to a brushless direct-current motor (1) comprising a permanent magnet (12a) arranged on a rotor (12) and a stator with windings. The temperature (T_W) of the windings is determined. An observer (28) is used to estim...
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WO/2006/131459A2 |
The invention relates to a method for controlling a reluctance motor which comprises a rotor and a stator. The rotor comprises a plurality of rotor segments and the stator comprises a number which are independent from the coils, for exam...
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WO/2006/123843A2 |
When an ECU (30) receives a transmission signal (TS) having a high level from a transmission (TM), the ECU (30) exerts torque reduction control to reduce a torque control value for a motor generator (MG). Furthermore the ECU (30) sets an...
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WO/2006/125184A1 |
An electrical device includes a plurality of single-phase power cells electrically connected to receive power from a source and deliver power to a load. The single-phase power cells include a first rank of regenerative power cells and a ...
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WO/2006/121061A1 |
A controller (40) executes: a process for calculating a main torque instruction value; a process for outputting a final instruction torque value according to a brake torque instruction value for reducing torque fluctuation generated when...
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WO/2006/121093A1 |
A square wave voltage having an amplitude equal to an output voltage (VH) of a converter (12) is applied to an AC motor (M1) by a square wave control block (400). Torque control of the AC motor (M1) is performed basically by changing the...
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WO/2006/114843A1 |
A servo motor controller enables reduction of the burden on a machine and stabilization of the control performance while improving the resistance to momentary power failure and instantaneous voltage drop depending on the operating condit...
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WO/2006/108146A1 |
The present invention intends to attain the objective of generating a new drive force additionally and constantly during rotation generated by the driving force from the outside at any rotational frequency inside the mechanism. The prese...
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WO/2006/106642A1 |
Parameters “n”, “ad”, “pd”, “aq”, “pq” and the like of motor parameter setting means (4) are set so as to satisfy [Expression 23] and the like. According to these parameters “n”, “ad”, “pd”, “aq”, “p...
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WO/2006/107290A1 |
The operation of an AC induction motor 24 is controlled in response to the actual slip exhibited by the motor during operation. The slip of the motor 24 may be determined by determining the actual running speed, n, of the motor shaft 25A...
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WO/2006/103869A1 |
A current control apparatus and a current offset correction method thereof that can always detect, in a motor conduction state, the offset value of a current detection system, which is superimposed on a current detection value, to correc...
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WO/2006/104930A2 |
A system for operating an electric motor (18) is described. The system has a torque estimator to determine a load on the motor (18) and a controller (16) configured to generate a motor control signal. The controller (16) continuously adj...
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WO/2006/098516A1 |
There is provided a method for controlling an electric power steering device for controlling a motor by vector control, driving the motor by a current instruction value calculated according to a steering torque and the like, and applying...
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WO/2006/097789A2 |
A motor control device is disclosed that reduces the shock caused by torque increase during switching output of a motor’s power generator from PWM wave voltage driving to square-wave voltage driving. Switching of PWM wave voltage drivi...
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WO/2006/087618A1 |
Thermal variable-operation regulator that regulates the operation of an operating device by progressively limiting the operation of the operating device (24) as a limitation temperature (Tset) increases. The limitation temperature (Tset)...
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WO/2006/082137A1 |
The invention relates to a method for monitoring the temperature of at least one bearing of an electric machine, whereby a first and second bearing temperature (TAL,TBL) is detected. A first pair of temperature characteristics (LK1,LK2) ...
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WO/2006/072981A1 |
[PROBLEMS] To provide a device and a method for measuring a constant of an inverter driven rotary electric machine in a nonrotating state without taking a complex arrangement or method. [MEANS FOR SOLVING PROBLEMS] The device for measuri...
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WO/2006/061978A1 |
A multi-phase current supplying circuit comprises a converter (2), an intervening circuit (3a), an inverter (4), a control circuit (6) and a lightning arrester (7). A power supply system (1) is connected to the converter (2) via the ligh...
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WO2006039626A9 |
A single controllable switch (509) drive system for regulating the speed of a two-phase switched reluctance machine (TPSRM) (700) rotor may include a speed control feedback loop (970) component that uses an established speed control sign...
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WO/2006/060329A2 |
An apparatus controls a power converter (115) of an AC motor drive system (100), the power converter (115) outputting multi-phase AC current to an AC motor (110). The apparatus comprises: a state selecting unit (160); and an advanced con...
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WO/2006/060319A1 |
A method and an apparatus optimize performance of a motor drive system (45). The method according to one embodiment comprises: selecting a property for a rated operation point; selecting inverter system characteristics and motor characte...
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WO/2006/056565A1 |
The invention relates to a method for varying a nominal current which is specific of a motor by providing a nominal current basic value signal (2) depending on a nominal current basic value of the motor Inenn, and by detecting an actual ...
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WO/2006/057529A2 |
Disclosed are an operation control device of a compressor, which can reduce motor (M) loss by applying an AC power to a motor (M) of the compressor without a switching operation of a control unit (Tr), and a method thereof. The operation...
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WO/2006/045815A1 |
The invention relates to a method for operating an electromechanical actuating unit, which is formed, in essence, of an electronic control unit and of at least one electric motor. The electric motor is controlled by the electronic contro...
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WO/2006/033180A1 |
A vector controller of an induction motor capable of correcting the set value of mutual inductance so as to match it to an actual value by additional processing on software without adding any special device. The vector controller (1) of ...
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WO/2006/033181A1 |
A vector controller of an induction motor arranged to attain stabilized rotation within a short control time by increasing the SN ratio of output voltage even when the rotational speed is low thereby suppressing the error of a primary an...
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WO/2006/027941A1 |
Since, during a light load operation, the produced torque is small and the overall current command I* given to the armature of a servomotor is small, the magnitude in the negative direction of a reactive current command Id* determined by...
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WO/2006/028861A2 |
A variable speed electric motor to drive a variable load over a substantially continuous range of speed. The motor has a plurality of winding combinations that may be switched into and out of the motor circuit. A torque controller select...
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WO/2006/018599A1 |
The invention provides a circuit arrangement including an induction motor (10) capable of being driven by an alternating current power source, a rectifier (40) for rectifying the alternating current to generate direct current for driving...
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WO/2006/017026A1 |
A system and method for controlling an electric motor is disclosed. The method comprises determining the operating load of the electric motor and then calculating the voltage to be applied to the electric motor in response to the operati...
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WO/2006/016243A1 |
The invention relates to an actuation device (1) which can be used to manoeuvre a mobile closure, darkening or sun protection element or a projection screen. The inventive device comprises a user control interface (7) which is connected ...
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WO/2006/009847A1 |
The present invention provides electrical devices that derive power from an incoming power source to produce output power to drive the device. The device includes circuitry or other means for determining at least one characteristic of th...
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WO/2006/008846A1 |
In an apparatus for measuring a constant of an induction motor (1), an inverter (2) power converts an input voltage command signal to a single-phase AC power and supplies it to the induction motor (1). A current detector (3) detects the ...
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WO/2006/006235A1 |
A motor controlling device for mounting on a vehicle, having a controller capable of controlling a DC brushless motor at high response and high accuracy. The motor controlling device for mounting on a vehicle adapted to drive a DC brushl...
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WO/2005/124976A2 |
A method for reducing EMI emissions in the control of an electric motor (300) supplied by a switching inverter (100) fed by a DC bus comprising controlling a phase advance (200A) of a conduction angle period during which a phase of the m...
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WO/2005/124475A1 |
There is provided a method for automatically setting a vibration suppression filter by a servo control device. When a vibration detector detects vibration [A2], a state amount frequency analyzer subjects data in the state amount trace un...
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WO/2005/119892A1 |
This invention relates to low loss power supply system comprising a rectifying bridge (3) supplying current to a motor, wherein the rectifying bridge including two AC power feed inputs PA,PB as well as at least one output for supplying p...
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WO/2005/117246A2 |
For determining the mechanical load of an alternating current synchronous electric motor (M) having a permanent magnet rotor, - the rotor is associated with an electrical position sensor (S), stationary in operation, which can supply an ...
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WO/2005/112249A1 |
A synchronous machine controller capable of generating a torque as close to a desired command torque as possible while considering the limit of the output current of a power converter. The synchronous machine controller comprises a torqu...
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WO/2005/101643A1 |
There is provided a motor controller exhibiting excellent harmonic current controllability in which circuitry and circuit processing are simplified while enhancing control accuracy. A detected motor current is converted through coordinat...
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WO/2005/096489A1 |
An AC motor can be decelerated in as a short time as possible by means of an inverter and the current is controlled below a predetermined value so that the inverter does not stop because of an overcurrent or the AC motor does not fail du...
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WO/2005/093943A1 |
A controller of a permanent magnet synchronous motor in which terminal voltage of the motor can be controlled with high accuracy even for a variation in motor constant through a simple arrangement without requiring square root or complex...
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WO/2005/093940A1 |
The invention concerns a control device powered by an alternating voltage source, comprising a first terminal (UP), a second terminal (DN) and a third terminal (N0) connected to a neutral conductor (AC-N) and powering a motor (MOT). The ...
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WO/2005/081396A1 |
A DC braking method for stopping an induction motor, wherein during a shift from a normal control state to a DC braking state, the torque shock caused by an abrupt change in the output current phase is suppressed below a predetermined va...
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WO/2005/081395A1 |
When receiving from a motor generator (MG2) an instruction of activating an engine (ENG) during driving of the driving wheel of a hybrid automobile, a control apparatus (30) generates and outputs a signal (PWMC) to a boosting converter (...
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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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