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Patent Searching and Data


Matches 1 - 50 out of 24,759

Document Document Title
WO/2018/130244A1
The invention relates to a method for determining the position of the rotor of a multiphase electric machine with pole windings (4), the inductances of which are uniquely connected to the rotational angular position of the rotor (2) in t...  
WO/2018/132291A1
The subject matter of this specification can be embodied in, among other things, a motion control apparatus that includes a brushless DC motor to actuate a mechanical output based on a collection of phase power signals, a collection of f...  
WO/2018/130793A1
A control system for a multiphase and synchronous rotating electrical machine comprising a stator (31) and a rotor (30), said control system comprising: - an electronic card (16) for generating stator switching signals according to a cur...  
WO/2018/120370A1
Provided is a multifunctional electric roller skate, two of said roller skates making one set; each set comprises a main frame panel (4), a support frame cover panel (9), a drive motor (D), a roller wheel (2), and a ski panel (1); the ro...  
WO/2018/119844A1
A numerically-controlled machine tool (10) and rotation speed adjustment method for a spindle motor (11) thereof, comprising: detecting an actual rotation speed value of a spindle motor (11); calculating the rotation speed error between ...  
WO/2018/121906A1
The invention relates to an electric machine with a stator and a rotor. The stator has a plurality of stator coils. The electric machine also has at least two power output stages, each of which is connected to some of the stator coils on...  
WO/2018/123711A1
A shift range control device (40) controls driving of a motor (10) in a shift range switching system (1) that is provided with the motor (10) and a shift range switching mechanism (20). A driving control unit (53) controls the driving of...  
WO/2018/122593A1
This invention relates to brushless DC rotation machine which comprises a stator with a sequence of electromagnets connected, through electrical junctions, one to the other to form a closed loop electrical circuit and two closed loop ele...  
WO/2018/123426A1
Provided is a device (100) for acquiring information on the rotation of a motor (10), said device comprising a rectifier that includes a rotational angular velocity calculation unit (31) for calculating a rotational angular velocity (ω)...  
WO/2018/114497A1
Device for controlling an electric motor (32) including: - an inverter (30) and a control module (3) which implement a current-mode control loop for controlling the electric motor (32); - an excitation module (5) producing an excitation ...  
WO/2018/119238A1
A method of operating a final drive unit clutch. The method provides an electric motor coupled with a clutch. The electric motor including a stator, a first Hall-effect sensor coupled with the stator, a second Hall-effect sensor coupled ...  
WO/2018/114705A1
It is presented a motor controller configured to control movement of a motor to a mechanical end position. The motor controller comprises: a motor output configured to control an amount of energy being supplied to the motor; a motor inpu...  
WO/2018/117144A1
Provided is a field-winding type rotating electric machine comprising: a stator armature winding that is wound around a stator core; a rotor field winding that is wound around a rotor core; a rectifier element that is connected to both e...  
WO/2018/116668A1
The present invention addresses the problem of providing a motor control device capable of improving output and reducing torque ripple. The motor control device 610 controls the drive current of a motor 200 having windings 201 through 20...  
WO/2018/117499A1
The present invention relates to a method and a device for driving a BLDC motor using a voltage compensation, wherein, when a BLDC motor mounted in a vehicle is driven, the DC voltage applied to the motor is detected, and the duty ratio ...  
WO/2018/109351A1
The present invention relates to a method for dynamically compensating for the offset error of an acquisition system comprising a current sensor (1) designed to measure or estimate the current passing through an actuator (6) of a electri...  
WO/2018/109698A1
A method for closed-loop control of the velocity of a brushless d.c. motor that supplies a torque (τ) to a rotating mechanical member, including carrying out a control of a FOC (Field-Oriented Control) type (10, 20) comprising obtaining...  
WO/2018/111839A1
A control system (126) is provided for an electric machine (106) having a rotor (110) and a stator (112). The control system (126) has a converter circuit (116) in electrical communication with the stator (112) and a controller (128) in ...  
WO/2018/108322A1
Method for determining the angular position of the rotor of an inverter-fed synchronous motor, wherein the inverter is controlled by signal electronics with a controller unit, in particular having a computer unit and a memory, wherein th...  
WO/2018/110538A1
The present invention addresses the problem of providing a method which makes it possible to simply evaluate the output of an initial position detection signal for a permanent magnet field, along with providing a method for correcting er...  
WO/2018/110458A1
This field winding-type rotating electrical machine is provided with: a stator; a rotor provided with a field winding; a rectification element; a drive unit; and a control unit. The field winding-type rotating electrical machine has a po...  
WO/2018/111200A1
The object of the invention is a drive for multiple permanent magnet synchronous motors-PMSM with a series connection to one frequency converter (inverter). The invention is characterized in that individual phase windings of the motors M...  
WO/2018/110455A1
The rotation angle of a rotor when driven by applying pulse voltages to multi-phase armature windings of an electric motor is estimated without using a sensor. Pulse voltages with shifted phases are respectively applied to the multi-phas...  
WO/2018/102872A1
A controller for an AC electric motor, the controller including: a power converter driving the AC electric motor; a feed forward converter that derives voltage values provided to the power converter; and a load model unit configured to d...  
WO/2018/104754A3
A method of controlling a switched reluctance motor is disclosed herein. The motor comprises a stator carrying a plurality of phase windings and a rotor. The method comprises activating the phase windings in a sequence selected to apply ...  
WO/2018/104754A2
A method of controlling a switched reluctance motor is disclosed herein. The motor comprises a stator carrying a plurality of phase windings and a rotor. The method comprises activating the phase windings in a sequence selected to apply ...  
WO/2018/099266A1
A method for starting a permanent magnet synchronous motor, a device power system and an unmanned aerial vehicle, the method comprising: obtaining a current motor rotation speed and motor position information of the permanent magnet sync...  
WO/2018/099873A1
The invention relates to a device and to a method for determining the rotor position of a permanent-magnet synchronous motor (1), wherein an excitation signal having a low-frequency component (NF) and at least and at least one high-frequ...  
WO/2018/100392A1
The present techniques generally relate to electric motor which may include one or more sensors usable to determine rotor alignment and/or speed. A method and apparatus for rotor alignment and/or speed error detection and/or correction a...  
WO/2018/098902A1
A method for lowering a torque pulsation of a permanent magnet synchronous motor, comprising: a method for reasonably selecting a permanent magnet magnetic pole repetition unit, and the offset way and angle calculation of a first offset ...  
WO/2018/100393A1
The present techniques generally relate to electric motor which may include one or more sensors usable to determine rotor alignment and/or speed. A method and apparatus for rotor alignment and/or speed error detection and/or correction a...  
WO/2018/098333A1
One or more Variable Frequency Drives (VFD) are connected to a packet network and the power transistor drive signals normally generated by the VFD to produce a desired Pulse Width Modulated (PWM) motor drive signal are generated by a sof...  
WO/2018/096762A1
A motor control device (4) for driving a motor (2) by sine waves is provided with: a first physical quantity detection unit (13) for outputting a current detection signal according to the terminal voltage across a single shunt resistor (...  
WO/2018/095729A1
A method for stopping a reciprocating compressor of a refrigeration device, air conditioning device or a heat pump, wherein the compressor has a brushless motor with windings, has the method steps: - rotating (41) of the motor at an oper...  
WO/2018/095482A1
The invention relates to a method for determining the position of a rotor in a brushless permanent-magnet electric motor, having a stator, which comprises a plurality of, particularly three, phase windings. Said phase windings are excite...  
WO/2018/096238A1
A method for triggering a controlled short-circuit mode for protecting an electric drivetrain of a motor vehicle driven, at least partially, by an electric machine, said motor vehicle comprising a battery suitable for supplying DC curren...  
WO/2018/095324A1
Provided is a torque control method for a static frequency converter in a pulse commutation stage. The static frequency converter comprises a rectifier bridge (NB) and an inverter bridge (MB), wherein the inverter bridge (MB) is composed...  
WO/2018/092049A1
A method for controlling an electric drive comprising a step of measuring the angle φ between the voltage Vf applied at least to a phase of an electric motor forming part of the electric drive and the respective phase current If, a step...  
WO/2018/090981A1
A method of braking permanent magnet synchronous motors and related apparatus. The method is applied to an electronic speed regulator and comprises: receiving a signal sent by a flight controller for braking permanent magnet synchronous ...  
WO/2018/091302A1
The present invention relates to a gear motor (101), in particular for a wiper system, comprising: - a brushless DC electric motor (103) including: - a rotor (15); - a stator (13) having coils (17) for electromagnetically exciting the ro...  
WO/2018/086504A1
Provided are a raising/lowering synchronization system (10) for a refrigerator rack and a control method thereof. The system comprises: a controller, a rack body (11), and at least two raising/lowering mechanisms (12). Each raising/lower...  
WO/2018/086688A1
In order to achieve the energy efficiency class IE4 defined in IEC standard 60034, it is necessary to operate permanent-magnet synchronous machines directly from the supply system. Since this is not readily possible, soft-starting device...  
WO/2018/089581A1
To avoid control failure resulting from startup of a PMSM that is windmilling (15), initial speed and position are determined before startup (5). A controller uses a FOC routine having a speed PI control loop, field-weaken control, a cur...  
WO/2018/088442A1
The present invention addresses the problem of providing a method for detecting the magnetic field location in an electric motor, said method making it possible to lower costs using simple hardware and software, and instantaneously detec...  
WO/2018/082902A1
The invention relates to a method for determining a rotational angle position (α,αι) of a shaft (17), in particular of a crankshaft (17') of an internal combustion engine (112) which is coupled directly or with a transmission to an el...  
WO/2018/082901A1
The invention relates to a method for stabilising the rotational speed (n) of an internal combustion engine (112) operatively connected to an electric machine (114), according to which a transient state (TS) of the internal combustion en...  
WO/2018/082496A1
An electric tool and control method therefor. An electric tool (100) comprises: a motor (12), the motor comprising a rotor and a stator, the stator comprising a first phase winding, a second phase winding, and a third phase winding; a po...  
WO/2018/084233A1
Provided is a brake device capable of high-accuracy control for causing a brake force estimate value to follow a brake force command value by angle-sensorless control, and also capable of achieving cost reduction or the like. This dynamo...  
WO/2018/077718A1
A method of automatically adapting the magnetic characteristics of a synchronous reluctance motor (2), of the type that comprises a stator (3) housing a rotor (4) therein and defining at least one pair of axes of minimum and maximum magn...  
WO/2018/079052A1
This apparatus for controlling a brushless motor is provided with: an inverter circuit which applies a drive voltage to the winding of each phase of a brushless motor; a rotor magnetic pole detecting unit which outputs a magnetic pole de...  

Matches 1 - 50 out of 24,759