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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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WO/2022/084017A1 |
Device (100) for determining the angular position of a rotor (4) of a rotating electric machine on the basis of signals delivered by a plurality of position sensors (20), this device comprising: - a circuit (103) producing a control loop...
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WO/2022/085050A1 |
A motor driving device (2) comprises: an inverter (11) that converts a DC voltage into an AC voltage and that applies the converted AC voltage to a single-phase motor (12); and a voltage detector (21) that detects a motor induced voltage...
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WO/2022/080241A1 |
The present invention concerns a method and a device for controlling a three-phase motor using a field oriented control system. The invention: - estimates, in a dq plane incremental inductances (I) and (II) of the motor, - determines an ...
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WO/2022/075952A1 |
This invention relates to a mechanism allowing motion of axial electrical engines stator group in radial direction. The invention particularly enables change of speed and torque values of electrical engine by changing reverse electro-eng...
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WO/2022/076825A1 |
A method performed by a controller of an electric motor, including generating control parameters, the step of generating control parameters selected from: inputting a given reference torque (Tref) and a speed command to a torque generati...
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WO/2022/074361A1 |
A method of controlling a brushless permanent-magnet motor having a phase winding and a rotor includes monitoring a value indicative of back EMF induced in the phase winding during oscillation of the rotor about a parking position, and u...
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WO/2022/076889A1 |
A power tool may include a motor, a controller configured to control operation of the motor, a drill assembly configured to control operation of a cutter with respect to a workpiece responsive to operation of the motor, and a liftoff pro...
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WO/2022/068062A1 |
A drive control apparatus and a gimbal, which relate to the field of voltage sampling, and are used for solving the problem whereby since the voltage differences of a signal line and a power source line are different, a reference voltage...
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WO/2022/064188A1 |
A method of determining a position of a rotor of a brushless permanent magnet motor includes measuring a current value indicative of current flowing through a phase winding of the motor and providing a reference voltage value indicative ...
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WO/2022/065884A1 |
Various embodiments disclosed herein relate to an electronic apparatus including a flexible display. According to an embodiment, an electronic apparatus including a flexible display may be provided, the electronic apparatus comprising: a...
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WO/2022/064510A1 |
The present invention discloses about a six phase stator winding (220) scheme of a motor (200) that has reduced MMF harmonics characteristics. The stator winding (220) has two sets, i.e a first set (305) and a second set (310) of three p...
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WO/2022/063068A1 |
A protection device and a brushless motor system, for use in reducing the cost of the brushless motor system and ensuring the normal operation of a brushless motor. The protection device (300) comprises a field suppression device (301) a...
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WO/2022/066295A1 |
Disclosed are various techniques operating a linear resonant actuator (LRA). In some aspects, a method for operating an LRA includes generating an LRA control signal having a period, the period having an active portion and a high-Z porti...
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WO/2022/064993A1 |
This ceiling fan (100), which comprises a motor (3) for rotating a blade, comprises: a speed detection unit (54) which detects the rotating speed of the motor (3); a control unit (52) which controls a drive voltage supplied to the motor ...
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WO/2022/062498A1 |
Disclosed is a power factor correction (PFC) circuit for a brushless DC water pump having AC input. The PFC circuit comprises a FAN6982 chip circuit and a voltage boost circuit. The FAN6982 chip circuit is used to perform power factor co...
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WO/2022/053127A1 |
There is provided a drive circuit (300) for a permanent magnet motor (311). The drive circuit (300) has a rectifier circuit (307) constructed and arranged to convert a source alternating current (305) to a direct current, and a film capa...
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WO/2022/053214A1 |
The invention relates to a power tool (2), in particular a handheld power tool, for example a grinding machine, comprising a tool (5), an electric motor (6) for driving the tool (5), and a control unit (7) for actuating the electric moto...
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WO/2022/054232A1 |
Provided is a rotating machine control device that is capable of accurately reducing ripple components by correcting the output torque of the rotating machine, even when the phase of a ripple component relative to the angle of rotation c...
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WO/2022/047834A1 |
An HVAC system control unit and an HVAC system. The HVAC system control unit comprises a first functional module, i.e. a main control module (7) which is used for receiving a control signal of an external temperature controller, and cont...
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WO/2022/050296A1 |
The present invention provides a control device and a control method for a brushless motor, which are able to suppress step-outs due to reverse rotation during low-speed sensorless control of a brushless motor. The control device for a...
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WO/2022/049026A1 |
In order to control the movement of a transport unit of a linear motor, a quality function J(SG) with quality terms JTk(SG) is used as a function of manipulated variables (SG) of the active drive coils (4), and the quality function J(SG)...
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WO/2022/048704A1 |
The invention relates to a method for modulating the torque ripple and/or the radial force of a three-phase current-operated electric machine (10), in particular of an electric drive machine of a motor vehicle able to be driven by an ele...
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WO/2022/040934A1 |
A brushless direct current motor driving method and circuit, and a device and a storage medium. The driving method comprises: when a count of a counter of a PWM module reaches one of preset thresholds, triggering an ADC module to collect...
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WO/2022/047438A1 |
In some aspects, a controller may obtain a back electromotive force (BEMF) signal associated with a haptic feedback component, wherein the BEMF signal is generated by movement of the haptic feedback component. The controller may determin...
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WO/2022/026111A9 |
A resolver excitation output stage amplifier. Disclosed embodiments comprise an amplifier stage and a current protection circuit. The amplifier stage includes one or more amplifier transistors coupled to first and second supply terminals...
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