| Document |
Document Title |
|
WO/2021/100843A1 |
The purpose of the present disclosure is to increase the efficiency of drive control. An electric tool (1) is provided with an electric motor (15), a drive force transmission mechanism, and a control unit (4). The electric motor (15) inc...
|
|
WO/2021/100844A1 |
The purpose of the present disclosure is to prevent a reduction in the efficiency of an electric motor. An electric tool (1) is provided with an electric motor (15), a drive power transmission mechanism (18), and a control unit (4). The ...
|
|
WO/2021/092644A1 |
AC motor rotates independent from power frequency gives advantages in size and controllability. Oscillating and rotating magnetic field is created across airgap by using Amplitude Modulated input. Higher frequency (Carrier) is the power ...
|
|
WO/2021/092812A1 |
Disclosed is a commutation error compensation method for an electric motor. The method comprises: when a rotor, that has not been corrected, in an electric motor rotates in a set direction, collecting a position signal and a three-phase ...
|
|
WO/2021/092641A1 |
The invention relates to a method and system for calibrating a control device (1), more particularly an inverter control device, of an electric motor (2), having the following work steps: Operating the electric motor (2) as part of a for...
|
|
WO/2021/093397A1 |
A vector control and flux weakening method and system for an embedded permanent magnet synchronous motor, relating to the technical field of permanent magnet motors. By calculating MTPA, flux weakening and MTPV control trajectory curves ...
|
|
WO/2021/095349A1 |
The electric motor drive control device, electric motor drive control method, and electric motor drive control system according to the present invention control an electric motor driven by the output of an inverter circuit and execute a ...
|
|
WO/2021/089182A1 |
The invention relates to a method for capturing the position of a movable part, more particularly for capturing the angular position of a rotatably mounted part or for capturing the linear position of a part arranged so as to be movable ...
|
|
WO/2021/090524A1 |
The power conversion device 1 is provided with: a power conversion circuit 10 for generating the drive power for an electric motor 3; a command generation unit 111 for calculating a voltage command on the basis of a frequency command, an...
|
|
WO/2021/092438A1 |
Bi-directional motor (36) for gas-engine replacement device (10). One embodiment provides a gas-engine replacement device (10) including a housing (14), a battery receptacle (54), a motor (36), a power take-off shaft (38) receiving torqu...
|
|
WO/2021/081968A1 |
A parameterless position-sensorless permanent magnet synchronous motor control method based on MTPA. The control method comprises a current control mode and comprises steps: step 1, receiving a given current Idq* and a γ angle inputted ...
|
|
WO/2021/082476A1 |
The present invention relates to an alternating current motor control method, in particular to a permanent magnet synchronous motor control method, capable of solving the problem that torque accuracy of motor output and motor operation e...
|
|
WO/2021/084739A1 |
A motor inductance measurement device (50) that measures inductance information (InfL) that includes characteristics (56a, 56b) of the instantaneous value of alternating-current flux (ΦqsAC) relative to the instantaneous value of altern...
|
|
WO/2021/083590A1 |
The invention relates to a method for calibrating the control of an electrical machine, comprising the steps of: applying at least one electrical test signal having a specified direction in a d-q coordinate system to the electrical machi...
|
|
WO/2021/073933A1 |
A method for estimating a temperature in an electric motor is provided. The method comprises the step: estimating a temperature in a coil of the electric motor based on previously estimated electric properties of the motor by a parameter...
|
|
WO/2021/074094A1 |
The invention relates to a method for operating a brushless and sensorless multi-phase electric motor (4), wherein at least two phase voltages (UU, UV, UW) and at least two phase currents (IU, IV, IW) of the electric motor (4) are determ...
|
|
WO/2021/073934A1 |
A method for Controlling a drive System (1) including a synchronous motor (3) having several phases comprises the steps: providing appropriate operating Parameters for the synchronous motor (3) by processing input of the drive System (1)...
|
|
WO/2021/068446A1 |
A brushless direct-current electric motor system control method based on a hybrid energy storage unit. The method comprises: constructing a hybrid energy storage unit, wherein an output of the hybrid energy storage unit is connected to a...
|
|
WO/2021/069479A1 |
A motor system comprises a motor comprising: a stator with a plurality of subwindings each having a plurality of phase connections for receiving phase voltages, wherein each of the subwindings is electrically insulated from each of the o...
|
|
WO/2021/070869A1 |
This control device for a three-phase brushless motor, using one shunt resistor disposed on a bus of an inverter as a drive circuit for driving the three-phase brushless motor, acquires a two-phase current of the three-phase brushless mo...
|
|
WO/2021/068471A1 |
Disclosed is a method for determining the stalled state of a permanent magnet synchronous motor under position sensor-free vector control, which comprises the following steps: step A: calculating the input power Pin and output power Pout...
|
|
WO/2021/069259A1 |
A method for controlling an electrical converter system (10) comprises: determining a nominal pulse pattern (t* p,i , Δu* p,i ) and a reference trajectory (x*) of at least one electrical quantity of the electrical converter system (10) ...
|
|
WO/2021/062725A1 |
An electric motor control method, apparatus and device. The method comprises: starting from a preset target position, using a first vector voltage to control a rotor of an electric motor to rotate in a first direction, and when it is det...
|
|
WO/2021/063293A1 |
Disclosed is a method for fitting a control curve of MTPA of a permanent magnet synchronous motor, belonging to the field of motor control. The method comprises: obtaining, in real time, motor parameters ψf, Ld and Lq of a permanent mag...
|
|
WO/2021/064308A1 |
The invention relates to a multi-star multi-phase synchronous machine with disconnected neutrals, in which a current regulator (20) is provided for each of the stars, which delivers direct ud and quadratic uq voltage values from differen...
|
|
WO/2021/066996A1 |
A control system (20) and method of controlling a multi-phase electric machine (28) for controlling the flow of electrical current between a voltage source (22) and the multi-phase electric machine or other application/load. The control ...
|
|
WO/2021/067059A1 |
A drain cleaning machine includes a brushless direct current (DC) motor configured to rotate a snake about the snake axis. An electronic processor is configured to control power switching elements to drive the brushless DC motor. In a fi...
|
|
WO/2021/059436A1 |
Provided is an alternating-current rotating machine apparatus that can determine, with good precision, whether a control circuit of another system has stopped operating. The alternating-current rotating machine apparatus is provided with...
|
|
WO/2021/061407A1 |
Methods and apparatus to control a three-phase BLDC motor with a curve transformer having an index value for each stored input value and output value for providing stored corner points for outputs of the curve transformer. The curve tran...
|
|
WO/2021/059350A1 |
The present invention comprises an inverter (30) for supplying an AC voltage with a variable frequency and voltage value to an electric motor (7) that drives a load element the load torque of which fluctuates periodically, and a control ...
|
|
WO/2021/054033A1 |
The present invention highly accurately estimates torque in all regions during low output and high output. In this invention, a first torque estimation unit 33 estimates a first estimated torque value using a cross product method and a s...
|
|
WO/2021/049248A1 |
Conventionally, changes in switching frequency, such as an increase in switching frequency, have posed the problem of causing greater switching loss in an inverter. A first electric current command generation unit 111 receives input of...
|
|
WO/2021/050288A1 |
A variable speed drive for an electrostatic motor provides feedback control according to rotor position and/or rotor rotational rate deduced from back currents (back- MMF). Extraction of the back currents is performed by a modeling of th...
|
|
WO/2021/050104A1 |
A system includes a motor operating with an angular velocity and an operational current, a motor controller circuit to issue control signals to the motor, and a stator resistance calculation circuit. The calculation circuit is to introdu...
|
|
WO/2021/047832A1 |
The invention relates to a method for determining a saturation characteristic of a synchronous reluctance machine (1), said method comprising the steps of: applying a voltage sequence to a stator (2) of the synchronous reluctance machine...
|
|
WO/2021/044325A1 |
It is disclosed a method for sensorless estimation of a position error signal (ϵθ) for a synchronous reluctance machine (5), said synchronous reluctance machine (5) comprising a stator and a rotor, said method comprising: receiving an ...
|
|
WO/2021/044457A1 |
This power conversion device comprises an inverse conversion device, a current detector, a frequency analysis unit, a storage unit, a determination unit, a reference rate change unit, and a velocity control unit. The inverse conversion d...
|
|
WO/2021/038670A1 |
This estimation device (9) comprises a phase current determination unit (12), a time difference calculation unit (13), and an estimation unit (15). The phase current determination unit (12) performs a determination process for determinin...
|
|
WO/2021/037533A1 |
The invention relates to a method for operating an electric machine (100) which is supplied with voltage by a converter with which a DC voltage is converted into an AC voltage, wherein phase voltage values (Ua, Ub, Uc) to be applied to t...
|
|
WO/2021/039054A1 |
The present invention addresses the problem of improving the efficiency of work employing a tool. An electric tool (100) is provided with a motor (1), an operating unit (70), a control unit (3), a transmission mechanism (4), and a switch...
|
|
WO/2021/036794A1 |
Provided in the present invention are a control method and a controller. The method comprises: collecting the rotor position of a permanent magnet synchronous motor, the rotational speed of the motor, a quadrature-axis current, a direct-...
|
|
WO/2021/033432A1 |
The present invention addresses the problem of providing an electric power tool in which it is possible to raise, if necessary, the upper limit for the working torque of an electric motor. This electric power tool (1) is provided with: a...
|
|
WO/2021/031685A1 |
The present invention relates to the technical field of electric locomotive traction control, and specifically to a control modulation method for a high power direct drive permanent magnet synchronous motor. In order to realize accurate ...
|
|
WO/2021/033489A1 |
The objective of the present invention is to suppress torque ripples by enabling superimposition of a harmonic component in a high frequency domain. In a DC-DC converter 31, a voltage that is input from a power source (external battery B...
|
|
WO/2021/017237A1 |
Disclosed are a deadbeat control system and method for a permanent magnet synchronous motor under a low carrier ratio. Said system comprises a permanent magnet synchronous motor, an encoder, an abc-dq coordinate conversion unit, an outer...
|
|
WO/2021/019662A1 |
Provided are a control device for an AC rotating electric machine and a power steering device by which a cancellation current for canceling out torque ripple components can be superimposed on a winding current in a field-forward manner, ...
|
|
WO/2021/016183A1 |
A method of operating a multi-phase electric machine includes operating a six-phase machine with six phases that are configured into a first group having a first neutral connection and a second group having a second neutral connection. T...
|
|
WO/2021/013501A1 |
The invention relates to a method for estimating the torque of a wound-rotor electric machine, comprising the steps of: receiving values of the currents of the phases (la, Ib, lc) of the stator and of the rotor current (If) of said elect...
|
|
WO/2021/008379A1 |
A hill-hold capacity improving method and device. Said method comprises: when a vehicle enters a hill-hold mode, acquiring an angle of a rotor of a motor and at least two phases of alternating currents flowing through the motor (201); ca...
|
|
WO/2021/001201A1 |
The invention relates to a method for operating a drive assembly (2) of a motor vehicle (1), which drive assembly has an electric machine (3), wherein a target torque is specified for the electric machine (3) according to a torque requir...
|
