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Patent Searching and Data


Matches 1 - 50 out of 23,401

Document Document Title
WO/2021/090731A1
This control device for an electric motor 200 cooled by a dielectric coolant 300 circulated by a pump 310 is provided with: a current command calculation unit 10 for calculating a current command on the basis of a torque command for the ...  
WO/2021/085168A1
In this motor drive system, a first actuator and a second actuator each have a plurality of redundantly provided control calculation units and a plurality of redundantly provided motor drive units. The control calculation units of the mu...  
WO/2021/085170A1
In the present invention, first and second actuators comprise a plurality of control computation units and a motor actuation unit. An "anomalous system internal communication state" is defined as a state in which a control computation un...  
WO/2021/086389A1
Permanent magnet motors (PMMs) can develop oscillations during motor startup that can cause damage to electric submersible pump (ESP) components. A system and method are presented for identifying mechanical and/or electrical caused oscil...  
WO/2021/084821A1
Provided are a compressor, a monitoring system, and a method of monitoring a compressor, which can monitor the remaining life of a semiconductor element of a motor control device while reducing processing load. This compressor (1) comp...  
WO/2021/079841A1
Provided is a method for continuing the operation of an electric compressor even if the magnitude of ripple voltage exceeds a predetermined threshold value. A control device of an electric compressor is provided with: a detection unit fo...  
WO/2021/079880A1
Provided is a method for detecting a ripple voltage. A control device is provided with: an acquiring unit which acquires the voltage value of an input voltage of a battery-driven electric compressor at irregular intervals; and a waveform...  
WO/2021/079469A1
A motor drive system (100) according to the present invention comprises: an inverter (2) that drives a motor (30); a current detection unit (3) that detects a first signal, which is the current value of the current flowing to the inverte...  
WO/2021/079662A1
A shift range device (1) is provided with: a motor (10) serving as a power source for switching the shift position; an energization unit (41) for energizing the motor; and a monitoring unit (72) for monitoring for an abnormal state in wh...  
WO/2021/079888A1
Provided is a method for determining the generation source of ripple voltage when abnormal ripple voltage is detected. The control device is for an electric compressor, the control device comprising: a detection unit that detects ripple ...  
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/2021/073936A1
An equipment (1) and a method (1') for estimating motor Parameters comprise receiving an operating parameter (u d,q , i d,q , ω e ) of an electric motor, estimating an estimated first motor parameter (Ψ ΡΜ,1 ) based on the operating ...  
WO/2021/076322A1
A frequency tracking system may use shaft speed and electrical frequency to estimate a frequency of a monitored machine. The frequency tracking system may convert shaft speed to a mechanical frequency and blend the electrical frequency a...  
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/2021/075186A1
Provided are: a motor control device that comprises a magnet temperature estimator that has a simple configuration but can still accurately estimate the magnet temperature of a permanent magnet of a permanent magnet synchronous motor; a ...  
WO/2021/065761A1
A current detection unit (30) has current detection elements (31-33) provided for respective phases on the high potential side of upper arm elements (21-23) or on the low potential side of lower arm elements (24-26). The upper arm elemen...  
WO/2021/065185A1
This motor control device is provided with a control unit, an input unit, and a determination unit. The control unit controls a motor. The input unit receives the detection result of a sensor for detecting the state of an environment und...  
WO/2021/058198A1
The invention relates to a method for controlling an electrical drive (1), wherein the electrical drive (1) comprises a converter (2) and a motor (3), wherein the converter (2) is operated with pulse width modulation. In order to improve...  
WO/2021/058049A1
The invention relates to a method for evaluating an acoustic resonance risk of an electric motor, comprising the following steps: a) determining a vibration behavior of a component of an electromagnetically excited electric motor at an o...  
WO/2021/051193A1
Brushless direct current (BLDC) motors are becoming more common, such as in cars and other vehicles. Unreliable BLDC motors or control systems can lead to risk of people's safety. A redundant BLDC control system is provided to control tw...  
WO/2021/053784A1
The present invention comprises: a drive control unit (4) which, when performing automatic adjustment to adjust a control command (104) for controlling a motor (1) by repeating an initialization operation, an evaluation operation, and a ...  
WO/2021/054165A1
This facility diagnostic device (1, 1A, 2, 3) is provided with: a current detection unit (10) which detects a driving current supplied to an induction motor (IM) that rotationally drives the rotating shaft of a facility; rotation detecti...  
WO/2021/050377A1
A segmented electrical drive system comprising a DC power bus comprising a DC voltage supply and a capacitor in parallel, an inverter comprising a plurality of inverter segments, a motor including a plurality of stator winding segments e...  
WO/2021/049271A1
A motor control device (40) controls the drive of a motor (10) including a motor winding (11), and is provided with an energization control unit (51) and a standstill determining unit (53). The energization control unit (51) controls ene...  
WO/2021/049501A1
A temperature estimation device (90) comprises: an initial value estimating unit which, at the start of operation of a power converter (30, 50) electrically connected to an electrical storage device (40), estimates a temperature initial ...  
WO/2021/047679A1
A biped robot motor drive system and a smart temperature protection method. The motor drive system detects the temperature of key components such as a motor, a power switch transistor and a busbar electrolytic capacitor. After the temper...  
WO/2021/043361A1
The invention relates to a method (10) for calculating the temperature at an electric drive unit (12), to an electric drive unit (12) for a vehicle comprising an electric motor with a stator and a rotor, and to a method for operating sai...  
WO/2021/043866A1
Disclosed is a controller communication apparatus for a vehicle. The present invention is characterized in that a controller communication apparatus for a vehicle comprises: a first controller; a second controller; a CAN communication li...  
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/2021/039278A1
The present invention addresses the problem of obtaining a failure diagnosis device for diagnosing a stuck-in-the-middle failure of a temperature sensor. A temperature sensor failure diagnosis device according to the present invention ...  
WO/2021/041446A1
An electric motor assembly comprising a housing containing a secondary power source, a motor driver, an electric motor, power sensors to sense faults in a primary power supply and the secondary power source, primary and secondary winding...  
WO/2021/039937A1
This motor driving circuit is provided with: a motor; a battery that supplies electric power to the motor; a power supply wiring to which a battery voltage is supplied and which is connected to the motor; a fifth FET that connects the po...  
WO/2021/039753A1
Controlling switching elements (18, 20) according to the voltage output by a signal amplification circuit (14) makes it possible to adjust the voltage applied to a current calculation circuit (21). Further, even if a wide range of blowin...  
WO/2021/038829A1
The purpose of the present invention is to provide: a power converting device that is capable of indicating to a user whether a diagnosis has been performed properly; and a sign diagnostic method used in the same. In order to achieve t...  
WO/2021/034813A1
A method of controlling a multi-phase electric machine includes implementing a first control method to control the operation of a six-phase machine that is configured as a combination of two three-phase machines. The method also includes...  
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/2021/031208A1
A signal equalization method and apparatus based on motor vibration acceleration, and a storage medium. The method comprises: step S10: calculating a motor excitation signal according to an expected target acceleration signal; step S20: ...  
WO/2021/029329A1
A control device: finds an assistance torque of an electric power steering device on the basis of a steering torque and compensates the assistance torque; varies a change amount of a compensation amount on the basis of the steering torqu...  
WO/2021/029331A1
This control device calculates a sign-extended steering torque by performing moving average processing that weights an oversampled signal obtained by oversampling processing; on the basis of the sign-extended steering torque signal, the ...  
WO/2021/029405A1
A control device (10), provided with operation control units (151, 251), abnormality monitoring units (155, 255), and storage units (156, 256). The operation control units (151, 251) control the operation of a control object (80). The ab...  
WO/2021/029128A1
The present invention makes it possible to measure a PWM signal in a wide frequency range. This PWM signal measurement device (20) has: a first duty ratio measurement unit (24) that employs a capture method and measures the frequency (...  
WO/2021/029407A1
A dynamo-electric machine control device (10) controls the drive of a rotary electric machine (80) having motor windings (180, 280). A plurality of control units (150, 250) have drive control units (151, 251), mode selection units (152, ...  
WO/2021/029104A1
The present invention provides a rotating electric machine diagnosis system and disgnosis method capable of detecting an abnormality of a rotating electric machine by detecting the fall of a magnetic wedge from a slot in the core of a st...  
WO/2021/025620A1
A method of detecting a rotor bar fault of an electrical machine, said method comprising, acquiring a set of online signals from the electrical machine over a period, said set of online signals comprising at least one vibration signal, a...  
WO/2021/024590A1
This motor control device is provided with an acquiring unit and a motor control unit. The acquiring unit acquires a torque detection value corresponding to the torque generated between a propeller and a motor rotating the propeller. The...  
WO/2021/024780A1
Provided are: a work vehicle, such as a wheel loader, that comprises an electric drive system that, for example, has a motorized travel drive unit but does not have a power storage device or a converter, wherein it is possible for travel...  
WO/2021/017047A1
An electric intelligent telescoping rod control system and a control method thereof. The control system comprises a main control module (10), a motor (20), and a driving assembly (30) connecting the main control module (10) and the motor...  
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/2021/015574A1
An electric power steering device and method are disclosed. An electric power steering device according to an embodiment of the present invention comprises: a steering motor comprising a first winding and a second winding, each of which ...  
WO/2021/015053A1
This electric actuator is provided with: a drive unit; a converting mechanism configured to convert a rotating motion from the drive unit into a linear motion; a transmission mechanism configured to transmit a driving force from the driv...  

Matches 1 - 50 out of 23,401