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WO/2022/201344A1 |
Provided is a magnetic gap length estimating device that does not require an electric current sensor and an electric current load with which the need to measure a voltage at a neutral point of a connection is obviated. This magnetic ga...
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WO/2022/195348A1 |
A brushless DC motor may include an annular rotor including a plurality of annular sectors. Each exemplary annular sector includes a respective array of permanent magnets embedded in and equally spaced circumferentially around each respe...
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WO/2022/193208A1 |
The present invention relates to an electric tool and a system and method for protecting an electric tool to prevent misuse of same. The system comprises: at least one sensor, which detects at least one operating state of an electric too...
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WO/2022/195921A1 |
This device for driving a synchronous electric motor comprises a current detection unit that detects a phase current flowing into the synchronous electric motor, and a magnetic pole position estimation unit that estimates a magnetic pole...
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WO/2022/189310A1 |
Linear electric motor (1) comprising a stator (3) comprising a plurality of stator segments (3a, 3b, …3n) and a drive system comprising at least one pair of drive units (4), a first drive unit (4a) of said pair connected to a first sta...
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WO/2022/191607A1 |
In an electronic device comprising at least one servo motor, the servo motor comprises: a communication circuit; a driving circuit; a motor; a sensor; and a control circuit, wherein the control circuit may: control the at least one servo...
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WO/2022/185343A1 |
The embodiments herein provide a multitude of single-phase Switch Reluctance Motor (SRM) arranged in a suitable fashion in order to achieve uniform torque with complete material utilization. The embodiment herein also provides a series o...
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WO/2022/185381A1 |
Provided is a rotating machine control device capable of reducing the effective value of a bus AC component by taking advantage of flexibility that two sets of armature windings and two sets of inverters are provided, without the necessi...
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WO/2022/185547A1 |
The purpose of the present invention is to solve the problem in which a motor no longer follows a control signal during high-speed rotation if high-precision positioning accuracy is achieved in a low-speed rotation range. A rotary enco...
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WO/2022/180368A1 |
A method is described for controlling a three-phase permanent-magnet motor. The method comprises sequentially exciting and freewheeling phases of the motor. The phases are freewheeled when a magnitude of phase current rises to an upper t...
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WO/2022/180366A1 |
A method is described for determining an initial position of a rotor of a brushless motor. The method comprises determining a rise time difference for each of three different pairs of voltage vectors, and determining the initial position...
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WO/2022/180367A1 |
A method of controlling a brushless permanent magnet motor having a plurality of phase windings and an inverter for applying voltage vectors to the plurality of the phase windings, the method including monitoring phase current flowing th...
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WO/2022/180365A1 |
A brushless permanent magnet motor has a phase winding, an inverter for applying voltage vectors to the phase winding, and a controller for controlling the inverter. The inverter has a plurality of high side switches and a plurality of l...
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WO/2022/180286A1 |
The mechanism enables torque protection in a brushless motor without the need to use measurement of the current drawn, establishing the torque level based on measurement of the brushless motor rotation speed. The rotation speed correspon...
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WO/2022/176614A1 |
Disclosed is a motor drive device (13) for driving a brushless DC motor (5). A motor drive device (13) comprises: switching elements (4a-4f) connected to a brushless DC motor; a position detection unit (6) which detects a magnetic pole p...
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WO/2022/176507A1 |
One aspect of this position detection device comprises: a first sensor group including N (N is a multiple of 3) first magnetic sensors that face a magnet rotating synchronously with the rotation axis of a motor and that are positioned at...
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WO/2022/178014A1 |
A motor control determines if a motor is rotating at steady state velocity and then populates a table with information about each individual motor sector. At steady state velocity, the duration of the motor within an electrical sector is...
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WO/2022/175473A1 |
Disclosed is a method for controlling an operating device (2) for operating a screen (3) of a home automation shading system (1) between at least a first position and a second position, the operating device comprising: - a first actuator...
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WO/2022/176615A1 |
A motor drive (13) is provided which drives a brushless DC motor (5). The motor drive (13) is provided with: a position detection unit (6) which detects the position of the brushless DC motor (5) from the induced voltage of the brushless...
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WO/2022/174284A1 |
An electronic clutch for a sensorless brushless DC motor, wherein the clutch does not utilise any rotor position sensors in determining its operation. Preferably the clutch utilises a voltage measurement across a series of power transist...
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WO/2022/170548A1 |
Provided is a motor braking device for a N-phase brushless motor. The motor braking device includes a switching circuit adapted to connect the N-phase brushless motor to a power supply, the switching circuit comprising a high side switch...
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WO/2022/172472A1 |
The present invention is a motor control device having a feedback system including a plurality of controllers to which a feedback signal related to the operation of a motor for a control shaft configured to bear a prescribed unbalanced l...
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WO/2022/172473A1 |
A motor control device drive-controls a motor for a control shaft that is configured to have a predetermined unbalanced load applied thereto. The motor control device comprises: a control unit having a feedback system that includes a plu...
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WO/2022/169575A1 |
A multiphase motor control system and method of operation. Discloses embodiments comprise receiving multiphase reference commands, transforming the multiphase reference commands into corresponding reference symmetrical components, receiv...
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WO/2022/168340A1 |
This motor control device comprises a feedback system including a plurality of controllers to which feedback signals relating to operation of a motor are inputted, and the device executes, in a state where the motor is halted by a contro...
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WO/2022/159164A1 |
A method includes determining a vector state of an alternating current (AC) electrical machine. The method includes, when the vector state is a zero-vector state, obtaining a plurality of phase current samples of the AC electrical machin...
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WO/2022/159638A1 |
A controller for a winch may include a speed input configured to receive a speed signal corresponding to a speed of a motor of a winch, and a current sense input configured to receive a signal corresponding to a current of the motor. The...
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WO/2022/159227A1 |
Power based self-sensing of a rotor position of an SR motor at mid to high speeds and low torque is achieved by an SR motor control system by comparing the motor power to an injection maximum power. A position current pulse is injected t...
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WO/2022/153544A1 |
According to the present invention, a determining and switching unit determines whether a limit speed at which a speed detector or a pulse converting unit is capable of correctly acquiring an actual rotational speed has been exceeded, an...
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WO/2022/154694A1 |
The invention relates to the field of electrical engineering, specifically pertaining to systems for controlling electric machines. The technical result of employing the switching method described below is that of increasing the operatin...
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WO/2022/154027A1 |
This motor control device controls an AC synchronous motor through sensorless control that does not use a rotor position sensor. The motor control device includes a first position estimator that estimates the position of a rotor of the A...
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WO/2022/145721A1 |
A motor position detection device, according to the present embodiment, comprises: a rotor which covers the rotational shaft of a motor; a substrate which is disposed so as to face the rotor; a hall sensor which is disposed on one surfac...
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WO/2022/145363A1 |
A position estimation method according to one aspect of the present invention comprises: a learning step for acquiring, on the basis of input sensor signals, training data required to estimate the rotational position of a rotor; and a po...
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WO/2022/142841A1 |
A power tool and a control method therefor, the power tool comprising a motor, and the motor comprising a rotor and a multi-phase stator winding; a drive circuit, having a plurality of switch units used for outputting a switch signal to ...
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WO/2022/145075A1 |
One aspect of a position inference method according to the present invention comprises: a learning step for acquiring a learning value which is necessary for inferring a rotation position; and a position inference step for inferring the ...
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WO/2022/142232A1 |
A method for implementing brushless direct current motor Hall position sensor fault processing, comprising: detecting a Hall signal by using an edge detection means, and recording the number of edge jumps; determining whether the absolut...
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WO/2022/145958A1 |
The present invention relates to an in-wheel motor type vehicle having, in a vehicle wheel, a motor, which is a power source, wherein the wheel comprises: a wheel for supporting a tire and a vehicle weight and transmitting power; spokes,...
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WO/2022/142840A1 |
Provided are an electric tool and a control method therefor. The tool comprises: a motor (201); a battery pack (203) which provides a power supply; a switching circuit (202) which outputs a power-on signal or a power-off signal; a first ...
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WO/2022/142310A1 |
A drive control circuit, a drive control method, a circuit board and an air conditioner. The drive control circuit is connected to a first power module and a second power module at two ends of an open-winding electric motor, the second p...
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WO/2022/138798A1 |
A characteristic calculation device (10) that comprises: a sensor information acquisition unit (20) that acquires position information that indicates the position of a motor (70) as detected by a position detector (71) and acceleration i...
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WO/2022/134661A1 |
A method for selecting a magnetization state of an adjustable-flux permanent magnet synchronous motor in case of optimal control of the full-speed domain efficiency and an online control method belong to the field of motors, and the pres...
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WO/2022/139462A1 |
A linear transfer system and a control method therefor are disclosed. The control method for a linear transfer system according to the present invention comprises the steps of: having a rotor on a conveyor move by a first torque generate...
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WO/2022/140101A1 |
A system (102) and method for torque compensation in a switched reluctance (SR) machine (104) disposed on a machine (100) is disclosed. The system (102) may comprise a SR machine (104), an inverter (122) and a controller (124). The contr...
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WO/2022/134751A1 |
The present application relates to the field of motors, and provides a current trajectory searching method based on maximum power optimal control and full-speed domain efficiency optimal control of a permanent magnet synchronous motor. T...
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WO/2022/140102A1 |
A work machine (100) includes a frame (110), a traction system (120) supporting the frame (110), a power source (130) mounted on the frame (110), a switched reluctance motor (205), an inverter (220) configured to control power to the mot...
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WO/2022/137406A1 |
This ventilation blower comprises: an inverter primary circuit; a motor body that has a stator and a rotor, and that is driven by the inverter primary circuit; a motor control circuit that controls the inverter primary circuit; and a sto...
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WO/2022/131686A1 |
A motor control method according to an embodiment of the present invention comprises the steps of: in a brake mode of a motor, performing three-phase energization in a first range section of a motor rotation speed; performing two-phase e...
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WO/2022/130283A1 |
A control circuit and method for DC motors is disclosed in the present application. The control circuit may comprise a voltage monitoring unit for monitoring the output voltage of the DC power supply, a switching circuit for controlling ...
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WO/2022/126678A1 |
Disclosed in the present invention are a method and device for evaluating performance state of a numerical control cutting tool bit of a flexible material. The method comprises: when a brushless direct current motor rotates to drive a nu...
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WO/2022/128084A1 |
A method for operating a drive arrangement (1) comprising an electric motor (2), wherein the drive arrangement (1) comprises the electric motor (2), an electrical circuit (3) for operating the electric motor (2), and a control device (4)...
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