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Matches 1 - 50 out of 25,814

Document Document Title
WO/2020/099276A1
The invention relates to a method (200) for determining a rotor position of a BLDC motor (100), comprising a magnetic rotor (107) and a stator (109), which has at least one excitation coil (101, 103, 105), to which an excitation voltage ...  
WO/2020/100234A1
This motor control device (100) is provided with: a rotation state calculation unit (10) which calculates a rotor position (θe) and a rotor speed (ωe_ave) using a position pulse signal corresponding to the output of a position sensor (...  
WO/2020/100457A1
The purpose of the present invention is to provide a technique for suppressing the occurrence of vibration and noise caused by an SPM brushless motor which has segment magnets as the magnetic circuit. This motor is provided with: a stato...  
WO/2020/101406A1
A vehicle steering system comprises: a motor assembly operably coupled to a steering rack, the motor assembly comprising a motor having a rotor and a motor position sensor configured to sense a rotor angle of the motor in a single-turn r...  
WO/2020/102001A1
A method for soft start of a motor in a heating, ventilation, and cooling (HVAC) system. The method includes operably connecting a first switching device with the motor; the first switching device operably connected to a power source and...  
WO/2020/097769A1
A method for acquiring friction characteristics of a servo system, a control method and system of a servo system, and a storage device. The method for acquiring friction characteristics of a servo system comprises: setting a servo system...  
WO/2020/100478A1
[Problem] To provide a motor control device and a motor control method with which it is possible to eliminate, as much as possible, the effect of a vibration component of a feedback current on d-axis and q-axis voltage command values Vd,...  
WO/2020/098863A1
The invention relates to a motor control unit (14) for controlling an electric motor (12), comprising a converter (16), controlled by a driver element (26) according to an input signal (24), for generating an alternating magnetic field i...  
WO/2020/097508A1
A motor controller for controlling the operation of a three-phase permanent magnet synchronous electric motor, wherein the three-phase permanent magnet synchronous electric motor is characterized by three phases A, B, C, and further wher...  
WO/2020/096385A1
A device and a method for controlling a brushless direct current (BLDC) motor, according to an embodiment of the present invention, comprise: a BLDC motor using a three-phase power source; a current measuring unit for measuring a current...  
WO/2020/095505A1
The present invention addresses the problem of providing a motor driving method which uses a two-phase energization method (energization method with less induced voltage clamp) for eliminating an open-phase brake current and optimizing c...  
WO/2020/088983A1
The invention relates to a method (100) for operating a voltage transformer (1), which converts an input voltage UZK provided on the DC voltage gate (2) of the voltage transformer into a three-phase or multiphase alternating voltage U on...  
WO/2020/090596A1
This location estimation device includes: a feature amount calculation unit which acquires, according to a rotor angle, detection values of magnetic field strengths at three or more spots on a rotor in a range in which the rotor angle is...  
WO/2020/090595A1
This position estimating device is provided with: a feature quantity calculating unit which acquires detected values of magnetic field strengths at three or more locations on a rotor, in a range in which a rotor angle is less than one ro...  
WO/2020/085507A1
Provided is a direct current machine with which a high current utilization rate can be achieved, by configuring a direct current machine having a plurality of commutator segments to be commutatorless or brushless. A direct current machin...  
WO/2020/085322A1
A brushless motor of an electric working machine according to one aspect of the present disclosure is provided with a stator, a rotor, a first drive circuit, and a second drive circuit. The stator has first teeth, second teeth disposed n...  
WO/2020/073754A1
Provided are a method, system, and motor for measuring a motor rotor logic level, said method comprising: obtaining an analog voltage outputted by a motor winding position sensor (S11); setting a first commutation voltage and a second co...  
WO/2020/075765A1
A shift range control device (40) controls switching of shift ranges by controlling drive of a motor (10). A signal acquisition unit (51) acquires an encoder signal from an encoder (13) which can output the encoder signal of three or mor...  
WO/2020/069849A1
In a system with an inverter (1) associated with an electrical machine (2), a control operation (9) involves a variable-frequency pulse width modulation method in order to optimize efficiency of the system. According to the invention, th...  
WO/2020/066946A1
Provided is a motor device comprising: a motor including a rotor having magnetic poles, a stator having a multi-phase coil, and a magnetic pole sensor which detects the magnetic poles; a position detector which detects a position change ...  
WO/2020/065221A1
The invention relates to a control circuit (1) of an electric motor (4), the control circuit (1) comprising a filtering device (13) in order to filter the high frequencies which are capable of generating electromagnetic radiation which i...  
WO/2020/064667A1
The invention relates to a method for operating an electric drive unit (10) and to a drive unit, preferably for adjusting a component in the motor vehicle, such as a side window or a sunroof or a seat component, by means of an electric m...  
WO/2020/064098A1
In order to achieve the energy efficiency class IE4 defined in the IEC standard 60034, it is necessary to operate permanently excited synchronous machines directly from the power supply system. Since this is not readily possible, soft st...  
WO/2020/064164A1
The invention relates to a method and to an arrangement for determining and/or controlling an operating state of an electric machine, wherein, on a magnetically conductive component (1, 2, 5, 7), at least one differential voltage (ud) be...  
WO/2020/064695A1
A method for starting a permanent magnet synchronous electric motor comprising a rotor and a stator comprising coils connected respectively to a plurality of phases and a conversion circuit connecting the plurality of phases to a power s...  
WO/2020/064099A1
In order to achieve the energy efficiency class IE4 defined in IEC standard 60034, it is necessary to operate permanently excited synchronous machines directly from the mains. Since this is not readily possible, soft-starting devices com...  
WO/2020/064422A1
The invention relates to a belt conveyor device (1) and to a method for stopping a belt conveyor device (1) in a controlled manner. In particular for directly driven belt conveyor devices (1), an event (E) such as a power failure can lea...  
WO/2020/059676A1
This shift range control device (40) is provided with drive circuits (41, 42) and a control unit (50). The drive circuits (41, 42) have switching elements (411-416, 421-426) for switching the electrical conduction of motor windings (11, ...  
WO/2020/061128A1
A sensorless position estimation and control system and method for a permanent magnet electric motor of a powertrain system of a vehicle involve determining a reference torque to be achieved by the electric motor based on a set of vehicl...  
WO/2020/059759A1
The present invention is a motor drive control device for controlling the driving of a motor supplied with an AC voltage of n phases (where n is a positive integer equal to or greater than 2). The motor drive control device is provided w...  
WO/2020/057914A1
The invention relates to a motor apparatus (12) for a switch drive (10) of an electric switch, having an electric motor (14) and a control apparatus (16) for controlling the electric motor (14), the control apparatus (16) having: a recti...  
WO/2020/057552A1
An electric tool (10), comprising: a tool attachment (12), a motor (13), a control module (21), a power supply module (17), and an operation switch (16). The operation switch comprises: a triggering mechanism (161); a current switch (SW1...  
WO/2020/059815A1
This motor control device is provided with: an inverter which drives a motor on the basis of multiple energization patterns; a current detector which outputs a detection signal corresponding to the current value of current flowing on the...  
WO/2020/056462A1
An electric motor for viscous pumping, wherein the electric motor is a brushless DC motor configured to be driven by a low DC voltage of around 40–60 VDC, and includes: a rotor with permanent magnets; a stator with a stack of laminatio...  
WO/2020/050250A1
A motor control device 10 equipped with: an acquisition unit 162 for obtaining a q-axis current component of a current vector generated when electricity is supplied to a brushless motor 100 so as to generate a voltage vector along an est...  
WO/2020/049079A1
For controlling an electric motor to maintain a current motor position, a motor controller determines the current motor position of the electric motor and selects (S41 ) from a set of stable positions, defined by cogging torque of the el...  
WO/2020/046812A1
A stand-alone motor unit for use with a piece of power equipment includes a housing and a flange coupled to the housing on a first side thereof. A plurality of apertures through the flange defines a first bolt pattern that matches an ide...  
WO/2020/044508A1
This motor drive device is provided with: an inverter circuit for converting a DC voltage to an AC voltage and outputting the AC voltage; a current command generation unit (11) for generating a current command value that is a command val...  
WO/2020/044526A1
This air conditioner is provided with: one inverter (104) for generating three-phase AC voltage from DC voltage; n (n is an integer of 2 or more) motors (141, 142) connected in series to the output side of the inverter (104) and generati...  
WO/2020/045568A1
A motor control device 10 is provided with: a rotation control unit 163 for causing a rotor 105 of a brushless motor 100 to rotate by supplying power thereto; a rotation direction determining unit 164 for determining the direction of rot...  
WO/2020/041016A1
A device may receive a current measurement of a motor identifying a plurality of component currents associated with a plurality of phases. The device may determine a position estimate for the motor based on the plurality of component cur...  
WO/2020/038107A1
An electric vehicle, and a method and device for diagnosing a rotary transformer initial position. The method comprises: detecting an initial position actual value of a motor rotary transformer; obtaining an initial position deviation ac...  
WO/2019/088927A9
The present invention relates to a system and method for suppressing a back electromotive force (EMF). The system and method are particularly relevant, but not limited to suppress or reduce the back EMF generated by a rotational motor dr...  
WO/2020/035693A1
A control system for an electrical motor comprises a rotor, a stator having a plurality of phase windings, and an inverter for applying voltage to the plurality of phase windings by connecting individual phase windings to a first or seco...  
WO/2020/031882A1
This position estimation method includes: the acquisition of learning data from a storage medium for storing learning data, which includes a list of a plurality of measured values which define the waveform characteristics of a first elec...  
WO/2020/031943A1
The position estimation method according to the present disclosure includes: obtaining first learning data including a sequence of a plurality of measurement values specifying the waveform feature of a first electric signal output from a...  
WO/2020/031942A1
The position estimation method according to the present disclosure includes: obtaining learning data from a storage medium storing the learning data including a sequence of a plurality of measurement values specifying the waveform featur...  
WO/2020/031937A1
This position estimation method includes: the acquisition of learning data from a storage medium for storing learning data, which includes a list of a plurality of measured values which define the waveform characteristics of a first elec...  
WO/2020/031938A1
The position estimation method according to the present disclosure includes: obtaining first learning data including a sequence of a plurality of measurement values specifying the waveform feature of a first electric signal output from a...  
WO/2020/027350A1
Provided is a method for commutating, on the basis of an absolute encoder, a BLDC (Brushless DC) motor having a stator and a rotor. Here, the absolute encoder is constructed to rotate dependently on rotation of the rotor, and the method ...  

Matches 1 - 50 out of 25,814