Results 41 to 50 of about 17,161,903 (271)

FPGA-based implementation of the back-EMF symmetric-threshold-tracking sensorless commutation method for brushless DC-machines [PDF]

open access: yes, 2013
The operation of brushless DC permanent-magnet machines requires information of the rotor position to steer the semiconductor switches of the power-supply module which is commonly referred to as Brushless Commutation. Different sensorless techniques have
Darba, Araz   +3 more
core   +1 more source

Research on sensorless control of induction motor with low switching frequency

open access: yes工程科学学报
AC induction motors have been widely used in various industries, and their sensorless control system has the advantages of simple structure and low cost. To realize sensorless control of the induction motor, the rotor flux and speed must be observed. The
Xin QI   +4 more
doaj   +1 more source

An analysis of the benefits of signal injection for low-speed sensorless control of induction motors

open access: yes, 2015
We analyze why low-speed sensorless control of the IM is intrinsically difficult, and what is gained by signal injection. The explanation relies on the control-theoretic concept of observability applied to a general model of the saturated IM.
Combes, Pascal   +3 more
core   +3 more sources

Accurate Inverter Error Compensation and Related Self-Commissioning Scheme in Sensorless Induction Motor Drives [PDF]

open access: yes, 2009
This paper presents a technique for accurately identifying and compensating the inverter nonlinear voltage errors that deteriorate the performance of sensorless field-oriented controlled drives at low speed.
Bojoi, R.   +3 more
core   +1 more source

Review of parameter identification and sensorless control methods for synchronous reluctance machines

open access: yesChinese Journal of Electrical Engineering, 2020
Synchronous reluctance machines (SynRMs) have drawn increasing attention in recent years owing to their advantages such as low cost, simple structure, ease of manufacture, and high robustness.
Chengrui Li   +4 more
doaj   +1 more source

A Novel Variable-Proportion Desaturation PI Control for Speed Regulation in Sensorless PMSM Drive System

open access: yesApplied Sciences, 2022
The problem of integral saturation greatly restricts the engineering application of PID controller in AC speed regulator systems, which also affects the control performance of sensorless drive system with the phase-locked loop (PLL) structure. To address
Zihan Wei, Mi Zhao, Ximu Liu, Min Lu
doaj   +1 more source

Sensorless multi-loop control of phase-controlled series-parallel resonant converter [PDF]

open access: yes, 2014
This paper proposes a multi-loop controller for the phase-controlled series-parallel resonant converter. Output voltage is solely measured for control and inner loop is used to enhance closed loop stability and dynamic performance compared to single-loop
Aboushady, A.A., Ahmed, K.H.
core   +2 more sources

Switched PI Control Based MRAS for Sensorless Control of PMSM Drives Using Fuzzy-Logic-Controller

open access: yesIEEE Open Journal of Power Electronics, 2021
With the use of sensorless control strategy, mechanical position sensors can be removed from the gearbox, so as to decrease the maintenance costs and enhance the system robustness.
Zhaohua Liu   +5 more
semanticscholar   +1 more source

A review of nonlinear Kalman filter appling to sensorless control for AC motor drives

open access: yesCES Transactions on Electrical Machines and Systems, 2019
Sensorless control of AC motor drives, which takes the advantages of cost saving, higher reliability, and less hardware, has been developed for several decades.
Zhonggang Yin   +5 more
doaj   +1 more source

Motion control and vibration suppression of flexible lumped systems via sensorless LQR control [PDF]

open access: yes, 2011
This work attempts to achieve motion control along with vibration suppression of flexible systems by developing a sensorless closed loop LQR controller. Vibration suppression is used as a performance index that has to be minimized so that motion control ...
Celebi, Besir   +7 more
core  

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