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WO/2009/113452A1 |
A control device (30) controls the switching operation of switching elements (Q3) to (Q8) so that the AC voltage at which an AC motor (M1) can output torque according to a torque instruction value is applied to each phase coil winding (2...
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WO/2009/113509A1 |
Provided is an inverter device which can realize accurate sensorless vector control without increasing the shunt resistance in the 2-shunt method. The inverter device comprises a main inverter circuit which wires the three arms formed by...
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WO/2009/110354A1 |
Provided are an output filter in which common mode voltage is suppressed and high frequency characteristics can be improved, and a power converter using the filter. A polyphase common mode filter (120) in an output filter comprises a pol...
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WO/2009/104452A1 |
Provided is a motor drive control device which enables an improvement in fuel efficiency in using electric power while preventing the battery voltage from falling below a lower limit because of rectangular wave control. A motor drive con...
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WO/2009/104529A1 |
Provided is a permanent magnet type dynamo electric machine which can perform variable speed operation over a wide range from low speed to high speed with high output, and can enhance efficiency, reliability and manufacturability over a ...
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WO/2009/095963A1 |
If there is static friction, the magnetic pole position estimation is completed at the time when error torque used for magnetic pole position estimation becomes less than the friction, so that there remains magnetic pole error. A problem...
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WO/2009/096066A1 |
A motor driving error is prevented. In concrete, disturbance in a rotation detection signal of a resolver due to motor noise is reduced. An inverter is controlled to set output torque of a rotating armature at target torque using the tar...
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WO/2009/095397A2 |
The invention relates to a method for ascertaining a correction value for the angle of the rotor of an electrically commuted reversible synchronous motor relative to a sensor used for the activation thereof. In order to equalize the sens...
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WO/2009/091319A1 |
The present invention relates to a device for controlling the speed of an electric motor, wherein the said motor is arranged to be connected to a voltage source, wherein the said motor comprises a stator winding and a rotor winding, wher...
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WO/2009/088908A1 |
A method of determining velocity of a shaft is provided. The method includes receiving a first shaft position signal and a second shaft position signal. Derivatives of each of the first shaft position signal and the second shaft position...
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WO/2009/084354A1 |
A winding change-over switch of a three-phase AC motor which can switch the motor current quickly while minimizing disturbance of a sine wave current and can prevent an abnormal operation or the destruction of an apparatus by detecting w...
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WO/2009/080911A2 |
The invention relates to a method for calculating, using a computer, a three-phase regulator of a three-phase system having a three-phase model, the method comprising steps consisting in: generating (10) a two-phase park model (1b) of th...
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WO/2009/078216A1 |
A leakage inductance and the sum of a primary resistance and a secondary resistance can be measured with high precision only by the amplitude values of voltage and current without using the phase difference between voltage and current. A...
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WO/2009/077221A1 |
The invention relates to a method for operating an electric motor (2) having a phase angle control with the following steps: Applying an AC voltage to a series connection of the electric motor (2) and a switching element (4), particularl...
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WO/2009/075272A1 |
A motor control device is provided with a converter section (21) which generates a converter voltage for driving a motor section by increasing a power supply voltage, a control section (20) which changes the value of the converter voltag...
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WO/2009/075271A1 |
An air compressor (1) is provided with a control section (5) which controls a motor section (4) by employing PAM control and PWM control. The control section (5) changes a voltage value, which is a condition for transition from the PWM c...
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WO/2009/075188A1 |
Provided is a motor power supply device including: a DC bus (2) to which DC current is supplied from outside; an accumulation device (3) which is connected to the DC bus (2) for accumulating DC current and performs discharge; and an inve...
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WO/2009/066546A1 |
It is an object to provide an alternating current motor control device configured to ensure insulation between a low voltage circuit and a high voltage circuit and to be possible for miniaturization. A motor control device set at each ar...
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WO/2009/060587A1 |
A washing machine has a water tank and a motor for rotationally driving a load received in the water tank and performs a washing operation including a washing process, a rinsing process, and dewatering process. The motor has a stator and...
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WO/2009/056421A2 |
The invention relates to a method and a device for acquiring information on the position of the rotor shaft of an electrical machine (12), using a sensor signal that can be associated with an angle of rotation and at least one input sign...
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WO/2009/057380A1 |
A zero-phase current transformer (102) detects a ground fault current and outputs a zero-phase current. When the voltage of the zero-phase current exceeds a positive side threshold (TH1) or drops below a negative side threshold (TH2), an...
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WO/2009/053388A2 |
Stationary rotor position identification method in a drive circuit for a brushless three-phase electric motor having three motor connections (TA, TB, TC) having the following steps: - application of a measurement signal to two of the thr...
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WO/2009/050804A1 |
A wheel diameter measuring instrument for measuring wheel diameters of an electric vehicle employing the velocity sensorless vector control by application of a synchronous motor. A wheel diameter measuring instrument for an electric vehi...
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WO/2009/050664A2 |
The invention relates to a method for operating an actuator (1) for manoeuvring a mobile member (52), that comprises a motor of the asynchronous or brushless type or that comprises a motor associated with a differential brake, and compri...
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WO/2009/047997A1 |
An AC motor control device includes: a resolver (25) which detects a rotation position of an AC motor (M1); and a rectangular wave voltage control unit (400) which performs control to supply a rectangular wave voltage to each phase of th...
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WO/2009/040965A1 |
A controller of rotary electric machine includes means (2) for detecting a rotary electric machine current generated in a rotary electric machine (1); means (3) for outputting an estimated position θp based on the rotary electric machin...
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WO/2009/041157A1 |
Without changing a constant used in a state estimator, temperature variation and control degradation caused by a constant setting error are suppressed, and a vector state in the regeneration state of an electric motor is considered, so t...
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WO/2009/038832A2 |
A system and method for nonintrusively determining electric motor efficiency includes a processor programmed to, while the motor is in operation, determine a plurality of stator input currents, electrical input data, a rotor speed, a val...
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WO/2009/035696A1 |
A motor controller (4) and method for maximizing the energy savings in an AC induction motor (3) at every load wherein the motor is calibrated at two or more load points to establish a control line (6), which is then programmed into a no...
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WO/2009/023190A1 |
An improved single-switch control circuit for use in a multi-phase switched reluctance machine is provided. The control circuit includes at least first and second phase windings, a switch, a capacitor, and a diode. The capacitor may have...
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WO/2009/013835A1 |
Sixth-order harmonic noise generated due to a torque ripple component corresponding to a sixth-order frequency of an inverter frequency is reduced in a power converter for use of an electric vehicle. Where three pulses included in a 1/2 ...
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WO/2009/009232A2 |
A system and method for determining stator winding resistance, and a temperature of the stator windings based on the stator winding resistance for thermal protection of an AC motor. The system includes a circuit having an input connectab...
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WO/2009/004944A1 |
A novel control device for easily controlling a synchronous motor while obviating the need for any position detector. The synchronous motor control device uses a d-q coordinate system in which the direction of the magnetic flux produced ...
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WO/2009/004888A1 |
An inverter comprises a high speed pulse (Vpu) detecting section performing high speed pulse detection of switching variation at an inverter section (2) and a residual voltage (Vuv) or phase (Vphuv) detecting section for detecting the re...
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WO/2009/001686A1 |
Provided is a pseudo current type 120-degree conduction inverter for driving a motor at a high speed. The pseudo current type 120-degree conduction inverter is enabled to suppress the terminal voltage saturation at a weak field control o...
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WO/2008/152906A1 |
An electric compressor control device includes: an inverter for electric compressor motor; a communication microcontroller arranged at a low-voltage region for transmission of an instruction signal via a high-speed communication bus; and...
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WO/2008/135138A1 |
The invention relates to a method and a device for determining the motor torque constant KM of an electric motor by measuring motor parameters on the running motor. In order to reduce the previously extensive measurement effort, it is pr...
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WO/2008/126630A1 |
The temperature of a stator coil is measured by a temperature sensor (14), amplified by a stator coil temperature amplifier (21), and transmitted to a vehicle control section (23). Further, motor cooling oil (17) for cooling the outer pe...
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WO/2008/126545A1 |
Generation of strange sound is suppressed while protecting a power element and the operable area of a fan motor is restrained from becoming narrower by controlling repetition of interruption and reset of a signal delivered to the fan mot...
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WO/2008/120540A1 |
A control mode switching judgment is executed as a part of main loop (control period (Tm)) for integrating AC motor control entirely. Control period (Tc) in rectangular wave voltage control mode is shorter than the execution period (Tm) ...
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WO/2008/120580A1 |
Provided are a motor control device capable of confirming a magnetic position estimation precision accurately, and a magnetic pole position estimation precision confirming method. The motor control device comprises a speed control unit (...
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WO/2008/120460A1 |
Provided are a power steering device for generating steering assistance force by actuation of a hydraulic mechanism having a hydraulic pump, and a method of driving the power steering device. The power steering device (2) has high respon...
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WO/2008/116885A1 |
The invention relates to an electrical drive machine (1) comprising a stator (2) and a rotor (3) that form a drive system with which an energy transfer system (5) for the supply of electrical energy to a load (8) on the mobile portion is...
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WO/2008/117497A1 |
A permanent magnet rotary electric machine which can perform high output variable speed operation over a wide range from low speed to high speed while enhancing efficiency and reliability over a wide operation range. The permanent magnet...
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WO/2008/115438A1 |
Indirect rotor resistance estimation for an AC induction motor is achieved by successively stepping the quadrature command to zero and the direct current command to a predetermined value causing the quadrature stator voltage to decay as ...
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WO/2008/110817A2 |
A method of determining the average current (I) drawn by an electric motor (12), the motor comprising a plurality of phases (26a, 26b, 26c), the method comprising: driving each phase of the motor with cyclic pulse width modulated (PWM) d...
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WO/2008/107992A1 |
A controller of an electric vehicle capable of reducing the total sum of the loss of an AC motor and the loss of a main circuit.A vector control command value operating section (11a) calculates and selects a flux command value (F2R) and ...
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WO/2008/108159A1 |
When the occurrence of a short-circuit fault of any of switch portions (13) including switch elements (11) and feedback diodes (12) connected to the switch elements (11) in parallel of an inverter circuit (7) is detected during the opera...
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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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