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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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WO/2022/132892A1 |
An impact power tool includes a housing, a motor, a controller, an output member configured to be rotated when the motor is energized, and an impact mechanism configured to rotationally drive the output member. The impact mechanism is co...
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WO/2022/130934A1 |
The present invention improves the performance of a drive unit driven by a motor in a work machine. An air compressor 10 comprises a first compression unit 14 and a second compression unit 15 which are driven by an electric motor 13. The...
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WO/2022/124156A1 |
A rotation angle estimation device (40) comprises an estimation unit (52) that estimates the rotation angle (θest) of a rotation electrical machine (10). The rotation angle estimation device: calculates, on the basis of an estimated rot...
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WO/2022/117437A1 |
A linear resonance scanning apparatus (100) comprises an electromagnetic drive unit (132) comprising a coil (140) wound about a core (138), the electromagnetic drive unit (132) having a field output end (134). A linear motion bearing ass...
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WO/2022/117991A1 |
A drive circuit for a brushless motor is described. The drive circuit comprises a converter for connection to a phase winding of the motor, and a controller. The converter comprises a plurality of switches and the controller controls the...
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WO/2022/117253A1 |
The invention relates to a method for operating an electric machine (2) comprising a rotatably mounted rotor and a motor winding that is electrically connected to an electric energy store (4) by means of power electronics (3). In said me...
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WO/2022/117136A1 |
The invention relates to a method (100) for ascertaining a rotary position (φr) of a rotor (12), which is assigned to an electric motor (10) and which is able to rotate about an axis of rotation (14) with respect to a stator and the rot...
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WO/2022/117988A1 |
A drive circuit for a brushless motor is described. The drive circuit comprises a converter for connection to a phase winding of the motor, and a controller. The converter comprises a plurality of legs, each leg comprising a high-side sw...
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WO/2022/117990A1 |
A drive circuit for a brushless motor is described. The drive circuit comprises a converter for connection to a phase winding of the motor, and a controller. The converter comprises a plurality of legs, each leg comprising a high-side sw...
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WO/2022/117987A1 |
A drive circuit for a brushless motor is described. The drive circuit comprises a converter for connection to a phase winding of the motor, and a controller. The converter comprises a plurality of legs, each leg comprising a high-side sw...
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WO/2022/117247A1 |
The invention relates to a method for operating an electric machine (2), in particular in a motor vehicle, the machine (2) comprising a rotatably mounted rotor and a motor winding that is electrically connected to an electric energy stor...
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WO/2022/117992A1 |
A drive circuit for a brushless motor is described. The drive circuit comprises a converter for connection to a phase winding of the motor, and a controller. The converter comprises a plurality of legs, each leg comprising a high-side sw...
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WO/2022/117986A1 |
A drive circuit for a brushless motor is described. The drive circuit comprises a converter for connection to a phase winding of the motor, and a controller. The converter comprises a plurality of legs, each leg comprising a high-side sw...
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WO/2022/109701A1 |
Method of accelerated extinguishing of residual current of a phase that opens when changing an electric position during the driving of a BLDC motor (10), under high load conditions, comprising: using the unipolar pulse width modulation p...
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WO/2022/110555A1 |
The present invention provides a method and apparatus for suppressing torque ripple of a permanent magnet synchronous motor. The method comprises: respectively performing proportional integral on a first quadrature-axis component and a f...
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WO/2022/109699A1 |
The present invention refers to a starting method with two-levels modified and discrete fixed-time or fixed-frequency hysteresis current controller, under high load conditions, of a BLDC motor (10) with trapezoidal-shaped induced voltage...
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WO/2022/099669A1 |
An electric tool (100) and a three-phase electric motor (10) control device and method thereof. The control device (20) comprises: a switch unit (21) configured to comprise a first switch unit and a second switch unit, the first switch u...
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WO/2022/096352A1 |
The present invention describes a system and a method for detecting blockage of an actuating assembly in a drug delivery device with a brushless DC or stepper motor. The Back EMF voltage is periodically measured at the driving contacts o...
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WO/2022/098869A1 |
Systems and methods are provided for controlling two or more linear generators each operating according to a repeated behavior to constitute a cycle. A control system utilizes control circuitry to determine a desired phase offset between...
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WO/2022/094894A1 |
Provided is a method for testing an electric motor, comprising: according to a preset control logic, controlling a switching state of first and second power tubes driven by three half-bridges (S110); obtaining the bus current outputted f...
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WO/2022/091701A1 |
This motor control device (10) controls a brushless motor (40) having a rotor with a salient pole structure that is driven by an inverter circuit (13). The motor control device (10) comprises the inverter circuit (13), a current detectio...
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WO/2022/089201A1 |
Disclosed is a vibration reduction control method for a motor, comprising: step a, determining whether an actual vibration amplitude of a motor exceeds a preset amplitude; and step b, if the actual vibration amplitude of the motor exceed...
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WO/2022/087701A1 |
The present invention refers to the use of phase advance in motors with non-ideal induced voltages, especially in motors with induced voltages that present a flat region, to avoid instability in the control, wherein the first step is to ...
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WO/2022/089829A1 |
A method of determining a refined angular position (18*) of a rotor of an electric motor comprising the steps of: a) providing, in respect of a rotating electric motor rotor, a raw signal indicative of raw angle of the rotor (Angle_raw) ...
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WO/2022/088440A1 |
The present invention relates to the field of power electronics and motor control. Disclosed is a model predictive current control method for a two-motor torque synchronization system. The invention takes an indirect matrix converter and...
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WO/2022/085048A1 |
A motor drive device (2) is provided with an inverter (11) disposed between a battery (10) and a single-phase motor (12) and drives the single-phase motor (12) in a position sensorless manner. When the single-phase motor (12) is started,...
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WO/2022/085049A1 |
This motor drive device (2) comprises: an inverter (11) which converts DC voltage to AC voltage and applies the converted AC current to a single-phase motor (12); and a voltage detector (21) which detects a motor induced voltage induced ...
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