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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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WO/2020/121342A1 |
A process is described for calibrating electric machines comprising the steps of: switching on an inverter connected to the electric machine, for rotating the rotor; driving the electric machine till the rotor reaches a rotation speed (Ï...
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WO/2020/120302A1 |
The invention relates to a method for operating a steering system of a motor vehicle. A voltage reserve (Ures) is determined as a function of a compensation trajectory (uα ß.comp) for a second actuating voltage (u23) and as a function ...
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WO/2020/121368A1 |
Provided are a motor drive device and a motor drive method capable of correctly detecting a zero cross of back electromotive force without being affected by switching of another phase.　The motor drive device is provided with: an invert...
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WO/2020/119939A1 |
Method for operating an electric motor fed by an inverter, wherein the angular position of the rotor of the electric motor is detected and the actual angular velocity of the rotor is determined from the detected values, wherein the diffe...
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WO/2020/120618A1 |
The invention relates to a method (100) for processing a signal in order to extract a useful signal from a disturbed signal P1 if the disturbed signal P1 is formed as a sum of a sinusoidal component S1 and an additional component X1. The...
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WO/2020/119869A1 |
The invention relates to a protective circuit of an electric motor with a single-phase winding (3), consisting of two coil sections (5, 6) with a centre tap (7), wherein the two winding ends of the coil sections (5, 6) are connected to e...
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WO/2020/119940A1 |
Method for monitoring a drive system and drive system which has an inverter-fed electric motor and a first signal electronics system, wherein an actual value of the motor current space vector is formed from the current values detected in...
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WO/2020/115630A1 |
DAHLANDER electromotor startup module automatically (after modifying the factors that cause the DAHLANDER electromotor to stop) used to launch and control the DAHLANDER electromotor in the field of industrial electricity. This module is ...
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WO/2020/113550A1 |
A brushless direct-current (BLDC) motor has a connector, a stator, a rotor and a positioning module. The connector has three input ends for receiving three voltage signals, and a feedback end for receiving a feedback signal. The three vo...
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WO/2020/114872A1 |
The invention relates to a device (1) for determining a first angle (Φ) between a rotor and a stator, having inputs for reading amplitudes (3, 4) of electrical signals (15, 16) detected via a sensor system and representing a first angle...
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WO/2020/107884A1 |
Provided is a resolver circuit for an electric bicycle. The resolver circuit further accurately detects a position of a motor during operation, and comprises a magnetic encoder chip U10 and a 3.3V power supply. The magnetic encoder chip ...
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WO/2020/109185A1 |
The invention relates to a method for controlling a three phase synchronous-reluctance or synchronous rotating machine (4) with permanent magnets, comprising the following steps: - measuring a current (iA, iB, iC) flowing in each of the ...
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WO/2020/108569A1 |
Disclosed are a chainsaw and an electric tool (10). The chainsaw comprises a working component (15), a main body part (20), a brushless electric motor (17), a power supply device (16), a driving circuit (42), a controller (41) and a moti...
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WO/2020/105131A1 |
A drive apparatus (100a) drives a motor (1) having a rotor provided with a neodymium rare earth magnet. The drive apparatus (100a) is provided with: an inverter (103) that drives the motor (1) at variable speed by performing weak magneti...
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WO/2020/103894A1 |
Provided are a method and system for controlling an electric motor, and a controller. The method comprises: controlling an electric motor to operate in an open-loop manner; determining whether a rotational speed of the electric motor rea...
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WO/2020/104765A1 |
A method (100) of controlling a brushless permanent magnet motor (14) includes determining (102) a motor operating target. The method (100) includes comparing (104) the motor operating target to a set of pre-determined excitation timing ...
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WO/2020/104764A1 |
A method of controlling a brushless permanent magnet motor (14) includes measuring (102) an input power of the motor (14). The method includes comparing (104) the measured input power to a target input power. The method includes applying...
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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 ...
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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 (...
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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...
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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...
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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...
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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...
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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,...
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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...
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