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WO/2020/222953A1 |
A motor control system for reducing or eliminating current ripple error during current sampling comprises a motor having a plurality of phase coils, a motor driver circuit having a plurality of switches coupled to the plurality of phase ...
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WO/2020/223329A1 |
A method and device for determining the position of a rotor in a brushless motor is provided. The method generally includes: injecting electrical signals into a stator of the brushless motor; measuring scattering parameters reflected bac...
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WO/2020/216392A1 |
The invention relates to a method (10) for ascertaining at least one first motor parameter (P) of an electric motor (12), which can be actuated by an input value (/) and comprises a rotatable rotor (16) and a stator (14), which electric ...
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WO/2020/216399A1 |
The invention relates to a method (10) for controlling an electric motor (12), wherein the electric motor (12), on the basis of control by means of an input variable (/), has a target variable (Ψ) influenced by at least one parameter (P...
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WO/2020/217184A1 |
The present invention relates to a rideable saddle vehicle (200) comprising: - an electric traction motor (1) which includes a stator and rotor; - a first vehicle speed measurement sensor configured to generate a first signal (6.1) which...
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WO/2020/217291A1 |
In sensor-less control of a rotary machine 1, when large variations in inductance between respective UVW phases are present due to manufacturing errors, imbalances occur between detection currents of the respective phases. This leads to ...
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WO/2020/211274A1 |
A BLDC motor, comprising a motor controller and a motor body. The motor body comprises a stator component, a rotor component, and a motor housing. The motor controller comprises a motherboard and a daughterboard. The motherboard comprise...
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WO/2020/214659A1 |
Methods and power tools for sensorless motor control. One embodiment provides a method for automatic control switching for driving a sensorless motor (150) of a power tool (100). The method includes determining, using a motor controller ...
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WO/2020/208766A1 |
Provided is an electric motor control device capable of accurately calculating the rotational speed of an electric motor. The electric motor control device is provided with a speed calculation unit and a speed correction unit. The speed ...
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WO/2020/207756A1 |
A method for determining a speed of an electronically commutated electric motor (14), in particular an electric motor (14) for a fan (11), wherein current measurement values (18, 19) are detected at multiple points in time which describe...
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WO/2020/202655A1 |
A drive device for a permanent-magnet synchronous machine has a power converter 102 that drives a permanent-magnet synchronous machine 103, and a controller 101 that controls the power converter 102. The controller 101 comprises: a torqu...
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WO/2020/204803A1 |
The invention pertains to a method for controlling operation of a hydraulic system of a mining machine (100). Said hydraulic system comprises an electric motor configuration (230, 231, 232), a variable displacement pump configuration (24...
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WO/2020/196744A1 |
A motor control device for controlling a brushless motor comprising a rotor and a three-phase armature coil, said motor control device comprising: a position detection unit, which detects the rotational position of the rotor; a control u...
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WO/2020/193957A1 |
A method (100) of determining a position of a rotor (18) of a brushless permanent magnet motor (14) includes measuring (102) phase current flowing through a phase winding (22) of the motor (14) during excitation of the phase winding (22)...
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WO/2020/188886A1 |
This power conversion device is provided with a main circuit unit, a control unit (12), a current sensor, and a half-wave rectifier. The control unit (12) is provided with current frequency calculation units (42, 51) and monitoring units...
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WO/2020/188960A1 |
Provided is a motor drive control device capable of driving a motor with high efficiency. A control unit (3) of the motor drive control device (1) outputs a control signal to a motor drive unit (2) to control the operation of an invert...
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WO/2020/188693A1 |
This power converter comprises a main circuit unit, a control unit (12), a current sensor, and a half-wave rectification unit. The control unit (12) comprises current frequency calculation units (42, 51), and monitoring units (43, 52). T...
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WO/2020/182273A1 |
A trigger apparatus for a powered device, such as a power tool is disclosed. The powered device comprises a trigger operable by a user to move from a first position to at least one second position so as to control an operation of the pow...
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WO/2020/185268A1 |
A motor control system includes a motor; a motor and a motor control circuit coupled to the motor to provide power to the motor. The motor control circuit includes a power feedback loop having a power reference circuit to provide a refer...
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WO/2020/177794A1 |
The invention relates to a method for the optimized operation of a BLDC motor (1) by means of a BLDC motor assembly which comprises: - the BLDC motor (1); - a control and evaluation unit (2); - a data memory (3); - a current regulator (4...
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WO/2020/178955A1 |
This motor drive device (1), which controls the driving of a single-phase motor (12) that rotates a rotor (12a) in which a permanent magnet is disposed, comprises: an inverter (11) that has a plurality of switching elements, converts a D...
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WO/2020/170642A1 |
This position estimation device comprises a correction unit and an estimation unit. The correction unit derives an estimated magnetic flux disturbance value for a stator. The correction unit corrects a detected value for a magnet magneti...
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WO/2020/170343A1 |
Provided is a rotary encoder which uses a general-purpose sensor, has high accuracy comparable to one equipped with a high-accuracy sensor, has excellent environment resistance, and is inexpensive. A general-purpose rotary encoder is p...
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WO/2020/161496A1 |
The present invention provides systems and methods for controlling an electric motor. The system comprises a sensor arrangement (110) comprising a first sensor (117) configured to measure the current in a phase (U, V,W) of the motor, and...
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WO/2020/160740A1 |
The present invention relates to a method for operating an electric motor (100), wherein: voltages with n phases are applied to windings (7) of the electric motor (100) by power electronics (6); the voltage curve of each individual phase...
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WO/2020/162828A1 |
A stator of an SRM is disclosed. The stator includes two or more pairs of diametrically opposite stator poles and two or more stator windings. Each stator winding is wound around each pair of diametrically opposite stator poles. The wind...
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WO/2020/160841A1 |
The invention relates to a drive system comprising an inverter and electric motor and a method for operating a drive system, wherein the electric motor is supplied from the AC-voltage-side connection of the inverter, wherein a first seri...
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WO/2020/161786A1 |
When a rotation angle of an electric motor is detected by a rotation angle sensor and used for controlling a power converter, the communication cycle thereof is not necessarily synchronized with the control cycle of the power converter. ...
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WO/2020/155509A1 |
Provided is a permanent-magnet synchronous motor random-filtering neural network control method which takes iron loss into consideration, belonging to the technical field of permanent-magnet synchronous motor position-tracking control. T...
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WO/2020/157507A1 |
A controller for a motor is capable of extrapolation, interpolation, and frequency domain analysis to improve estimates of back-EMF that are used to estimate the motor's absolute position and electrical positions and the timing of commut...
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WO/2020/156782A1 |
The invention relates to a method for controlling an inverter which is electrically connected to an electric motor, having the following steps: defining a modulated voltage (S1) for the inverter, said voltage being based on a first switc...
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WO/2020/157858A1 |
The electric compressor is provided with: a rotating shaft; a compressor wheel provided on the rotating shaft; and an electric motor that imparts rotational force to the rotating shaft and includes a rotor fixed to the rotating shaft and...
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WO/2020/153152A1 |
A micro computer stores offset correction values that correct offset of detected current associated with pulse shift for each of maximum phase detection current having the longest energization time among three phases and minimum phase de...
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WO/2020/151370A1 |
Disclosed is a sensorless control method and device for a three-phase switched reluctance motor. In the control method, a functional relation of three-phase wire inductances is obtain from the real-time phase inductance values of a three...
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WO/2020/151842A1 |
The invention relates to a method for optimising the efficiency η of an on-load-operated, electrically commutated machine, in particular an EC motor, wherein the motor is connected to a motor controller, with the aid of which at least o...
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WO/2020/150536A1 |
Disclosed are various embodiments for a new and improved multi-tunnel motor and controller for an electric motor, where the motor controller is able to dynamically modify the number of phases and pole count of the electric machine in ord...
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WO/2020/147564A1 |
Disclosed are a disk-type electric motor and a method for controlling a disk-type electric motor. The disk-type electric motor comprises a first stator iron core (1) and a second stator iron core (2) which are arranged in an axial direct...
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WO/2020/149002A1 |
This motor control device includes a designated position detecting unit for calculating a position detection value at an externally designated timing, as a designated position detection value. The designated position detecting unit is pr...
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WO/2020/148900A1 |
This control device (100) for a dynamo-electric machine comprises: a current detector (2) that detects the dynamo-electric machine current; a position estimator (4) that estimates the rotor position of the dynamo-electric machine (1) on ...
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WO/2020/145068A1 |
A motor control device 1 comprises a temperature-torque-ripple-amplitude computation unit 11 and a target torque correction unit 13. The temperature-torque-ripple-amplitude computation unit 11 computes temperature-torque-ripple amplitude...
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WO/2020/143009A1 |
Provided in the present invention is a bootstrap starting circuit for an electric motor, comprising a drive amplification circuit and a starting circuit. The drive amplification circuit is separately connected to three low-level signals ...
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WO/2020/133113A1 |
A determination method and apparatus for a brushless direct current counter-electromotive force zero crossing point threshold and a storage medium, the method comprising: detecting counter-electromotive force zero crossing point time int...
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WO/2020/139820A1 |
A system includes a motor having a plurality of windings, a rotor and a stator magnetically coupled to the rotor, a plurality of power inverters connected to respective windings, wherein the plurality of power inverters is configured to ...
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WO/2020/126553A1 |
Signal processing for determining a rotor position without the use of encoders. To this end, test signals are applied to the electrical currents in the phase connections of an electric machine, and the total currents in the phase connect...
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WO/2020/127894A1 |
The invention relates to a circuit assembly (100) for converting a differential input signal into a square output signal comprising a first input terminal (In+) and a second input terminal (In-) for feeding the differential input signal ...
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WO/2020/129859A1 |
Provided is a rational configuration for suitably determining the likelihood of excessive rotation of a tool body of a drilling tool due to locking of a tip tool. A driver drill (1) comprises: a tool body (10); a brushless motor (2); a c...
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WO/2020/125005A1 |
Provided are a railway train traction permanent magnet synchronous motor rotor position detection device and a railway train. The detection device comprises: a master controller, a field-programmable gate array, a signal converter, a fir...
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WO/2020/126794A1 |
The invention relates to a method for operating switching elements (20,22,24,26,28,30) of an inverter (16,18) of a vehicle (10) driven by way of a three-phase synchronous machine (12,14), in which the inverter (16,18) has a series circui...
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WO/2020/132420A1 |
Apparatus features a signal processor configured to receive signaling from a flux sensor containing information about a residual field from an electrical supply to a motor of a driven machine and a magnetic field from one or more rotatin...
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WO/2020/126133A1 |
Control commands (C) are specified for a control device (4) of a machine, said control commands defining a sequence of ideal position target values (x*) for a position-controlled shaft (1) of the machine. This sequence has successive sec...
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