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Patent Searching and Data


Matches 1 - 50 out of 26,136

Document Document Title
WO/2021/002002A1
This electric motor drive device is provided with an inverter (30) for driving an electric motor (7) for driving a load element having a periodic variation in the load torque. When stopping the electric motor (7) by controlling the inver...  
WO/2021/001850A1
The present invention relates to efficient Direct Current fans or in short ( SEDC Fans), that run on 12/24 volts DC power source. These fans take power in the form of pulses at regular intervals there by increasing the overall efficiency...  
WO/2021/001087A1
The invention relates to a position detection device for determining the position of the diaphragm or the drive piston of an electric-motor-driven diaphragm pump, in particular detecting the upper and lower reversal point (Po, Pu) in the...  
WO/2020/260564A1
The invention relates to a method for moving a rotor (20) in a planar drive system (1). The planar drive system (1) has a first stator module (11), a second stator module (12), and a rotor (20), and the first stator module (11) and the s...  
WO/2020/260037A1
The present invention provides a control system (10) for an electrical machine (EM) for generating a braking torque by means of the electrical machine (EM) at a traction drive, comprising a control device (SE), wherein the control device...  
WO/2020/253821A1
Provided is a ride-on lawnmower, comprising: a travel component, a power output component, a power supply device, a drive circuit, an operating device, and a control module; the travel component comprises a travel wheel and a first motor...  
WO/2020/255322A1
This electric device (1) comprises: a motor (11b) that has a plurality of coils (111); and a detachable power supply device (15) that has a connection unit (15a) electrically connected to the plurality of coils (111), and a DC power supp...  
WO/2020/249313A1
A method for determining the angle (ϕ) of the rotor (18) of an electric motor (12) comprises the following steps: receiving a first rotor position signal (P1) from a rotor position sensor (15) by means of a control unit (14), the first ...  
WO/2020/248412A1
Disclosed are a motor controller and a motor applying same. The motor controller comprises a control box and a control board mounted within the control box. The control box is provided therein with at least two cavities, one of which is ...  
WO/2020/249557A1
The invention relates to an assembly for detecting the direction of rotation of a multi-phase electric motor (1), comprising multiple single-phase converters (3), each supplying a phase of the electric motor (1) with current (1.1, 1.2, 1...  
WO/2020/249329A1
The invention relates to a method for determining a rotor position of an electric rotating machine (10) which is fed by means of a PWM-controlled inverter (40). Specific injection voltages (uinj), which are composed of predefined voltage...  
WO/2020/245997A1
This motor control device (100) has: an excitation command preparing unit (103) for exciting an excitation position of any one phase of a motor (200) having a plurality of phases; and a polarity estimating unit (104) for estimating the p...  
WO/2020/239326A1
The invention relates to a system (1) comprising a control device (10) with central electronics (11) designed for the intended connection and operation of differently coded electric motors (En) with different motor characteristics (Mn) a...  
WO/2020/243549A1
A motor drive system and method for determining an optimized efficiency of the motor drive system are provided. The motor drive system includes a system controller, a motor drive having includes an inverter configured to generate the AC ...  
WO/2020/239385A1
The invention relates to a commutation method and to a single-strand EC motor with a winding strand with two winding connections, comprising a current regulating device in the winding strands between the winding connections, wherein the ...  
WO/2020/236163A1
An example of an apparatus with an input connection to receive an input tachometer signal. The input tachometer signal may include a frequency to indicate a fan speed. A pulse width modulator may be coupled to the input connection and ge...  
WO/2020/230339A1
Provided is a rotating electrical machine control device with which it is possible to suppress an increase in the frequency of a switching frequency resulting from an estimating voltage command, while reducing a delay in estimating a pol...  
WO/2020/232199A1
The present invention provides, in one aspect, a router including a motor unit and a base configured to selectively receive the motor unit to support the router on a work piece surface. The motor unit includes a motor and a spindle confi...  
WO/2020/230495A1
The present invention addresses the problem of appropriately controlling a motor by ensuring speed calculation accuracy even when the motor is frequently switched between forward rotation and backward rotation. The present invention is p...  
WO/2020/225024A1
The invention relates to a regulated brushless electric motor (100), in particular to a brushless DC motor, preferably for driving a compressor (300) for generating compressed air, in particular for a compressed-air consumer of a vehicle...  
WO/2020/224645A1
A speed regulation control system for a windshield wiper, comprising an electric motor (3), a connecting rod structure, a control module (1) and a sensing module (2), wherein the connecting rod structure converts a unidirectional movemen...  
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 ...  
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...  
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 ...  
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...  
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...  
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 ...  
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...  
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 ...  
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 ...  
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...  
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...  
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...  
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...  
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)...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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. ...  
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...  

Matches 1 - 50 out of 26,136