Results 21 to 30 of about 33,301 (265)

Fault Diagnosis of Fracturing Pump Based on Torque and Torque-Pressure Ratio Deviation Rate

open access: yesShiyou jixie, 2022
In order to quickly and effectively diagnose the fault of electric fracturing pump,according to its system characteristics,a fault diagnosis method of electric fracturing pump based on motor torque and torque-pressure ratio deviation rate was proposed by
Wang Bo, Wang Longting, Zhang Jinya
doaj  

Research on reducing reluctance torque of permanent magnet toroidal motor

open access: yesAIP Advances, 2021
The permanent magnet toroidal motor (PMTM) is a special motor that combines a permanent magnet motor with a deceleration mechanism. Because of the special structure of the PMTM, its reluctance torque includes cogging torque and end torque.
Xin Liu, Maopu Sun, Xiaoyuan Wang
doaj   +1 more source

Torque Measurement and Control for Electric-Assisted Bike Considering Different External Load Conditions

open access: yesSensors, 2023
This paper proposes a novel torque measurement and control technique for cycling-assisted electric bikes (E-bikes) considering various external load conditions.
Ping-Jui Ho   +5 more
doaj   +1 more source

Computing the motor torque of Escherichia coli [PDF]

open access: yesSoft Matter, 2018
Computation of bacterial motor torque, T , versus distance, d , of bacterium from glass substrate using boundary element method and slender body theory.
Debasish Das, Eric Lauga
openaire   +6 more sources

A novel PM motor with hybrid PM excitation and asymmetric rotor structure for high torque performance

open access: yesAIP Advances, 2017
This paper proposes a novel permanent magnet (PM) motor for high torque performance, in which hybrid PM material and asymmetric rotor design are applied.
Gaohong Xu   +3 more
doaj   +1 more source

Torque Ripple Reduction in SR Motor Operating without Rotor Position Sensor

open access: yesAdvances in Electrical and Computer Engineering, 2022
Principle of sequential excitation for stator windings of switched reluctance motor (SRM) causes many problems including torque ripples and substantial requirement for rotor position sensing.
ABDELMAKSOUD, H., SHAABAN, S.
doaj   +1 more source

Design and Investigation of a Low-Cogging-Torque and High-Torque-Density Double-Sided Permanent Magnet Motor

open access: yesEnergies
In this paper, a high-torque and low-cogging-torque double-sided permanent magnet (DS-PMFM) motor is proposed. The research focuses on adopting structure of stator split-tooth and unequal-width rotor poles, enabling the motor to have high output torque ...
Yuting Zhou   +3 more
doaj   +1 more source

Investigation on flat torque‐angle characteristic of torque motor based on magnetic saturation of tooth tip

open access: yesIET Power Electronics, 2023
The flat torque‐angle characteristic of torque motor plays a decisive role in the control quality of electro‐hydraulic servo and proportional valve. To solve the issue that the current wet‐type torque motor for two‐dimensional (2D) valve does not have ...
Bin Meng   +5 more
doaj   +1 more source

Torque ripple minimization of a switched reluctance motor [PDF]

open access: yesProceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95, 1995
This paper presents a simple technique to minimize torque ripple of a switched reluctance motor. The technique is based on the control of the sum of the square of the phase currents by using only two current sensors and analog multipliers. The simulation results and a proposed circuit are given.
BILGIC, MO, OZBULUR, V, SABANOVIC, A
openaire   +3 more sources

The Study of the Salient Pole Geometry Optimization of the Flux Switching Permanent Magnet Machine

open access: yesActuators
The flux switching permanent magnet (FSPM) motor is a stator permanent magnet motor. The typical FSPM motor is doubly salient, which generates torque ripple and affects the rotation smoothness. In this paper, the influence of salient pole geometric sizes
Chen Liu, Dewei Xu, Wenwu Wu, Bo Yang
doaj   +1 more source

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