Results 211 to 220 of about 4,327 (260)

Effect of Different Chemo-Mechanical Shaping Protocols on the Intratubular Penetration of a Bioceramic Sealer. [PDF]

open access: yesJ Clin Med
Generali L   +8 more
europepmc   +1 more source

A new torque control method of a switched reluctance motor using a torque-sharing function

open access: yesIEEE Transactions on Magnetics, 2002
A torque sharing function (TSF) method is one of the torque control methods that drives each phase of a switched reluctance motor so that the overall torque becomes a constant torque. The conventional TSF method defined the TSF only at a positive torque production region, which causes a poor torque-speed performance as the speed increases due to the ...
Changhwan Choi, Seungho Kim
exaly   +3 more sources

A non-unity torque sharing function for torque ripple minimization of switched reluctance generators

open access: yes2013 15th European Conference on Power Electronics and Applications (EPE), 2013
This paper presents a new torque ripple minimization technique for a Switched Reluctance Generator (SRG). Although the SRG has many advantageous characteristics as a generator, it has not been widely employed in the industry. One of the most notorious disadvantages of the SRG is its high torque ripple. In this paper, a non-unity Torque Sharing Function
Park, Kiwoo   +2 more
core   +4 more sources

An Improved Torque Sharing Function for Torque Ripple Reduction in Switched Reluctance Machines

IEEE Transactions on Power Electronics, 2019
An offline torque sharing function (TSF) is introduced in this paper for torque ripple reduction in switched reluctance machines (SRM). This TSF uses static flux linkage characteristics of the machine obtained from finite element analysis or experiments that describe the machine dynamics to determine optimal current profiles such that the torque ripple
Haoding Li, Berker Bilgin, Ali Emadi
exaly   +2 more sources

A Simple Nonlinear Logical Torque Sharing Function for Low-Torque Ripple SR Drive

IEEE Transactions on Industrial Electronics, 2009
A novel and simple nonlinear logical torque-sharing function (TSF) for a switched reluctance motor (SRM) drive is proposed. This novel scheme using nonlinear TSF manipulates currents in two adjacent phases during commutation, so that efficiency and torque ripple in an SRM drive can be considerably improved. For constant torque generation, the switching
Dong-Hee Lee
exaly   +2 more sources

An Offline Torque Sharing Function for Torque Ripple Reduction in Switched Reluctance Motor Drives

IEEE Transactions on Energy Conversion, 2015
In this paper , an offline torque sharing function (TSF) for torque ripple reduction in switched reluctance motor (SRM) drives over a wide speed range is proposed. The objective function of an offline TSF is composed of two secondary objectives with a Tikhonov factor to minimize the square of the phase current (copper loss) and derivatives of current ...
Jin Ye, Berker Bilgin, Ali Emadi
exaly   +2 more sources

Torque ripple minimization of SRM using torque sharing function and hysteresis current controller

open access: yes2015 International Conference on Control Communication & Computing India (ICCC), 2015
Switched Reluctance Motor (SRM) is a type of synchronous AC machine that converts the reluctance torque into mechanical power. Torque pulsations are inherent in SRM due to the doubly salient structure of the machine. The SRM offers similar overall efficiency to an induction motor of the same rating since the windage and friction losses are comparable ...
Stella Kurian, null Nisha G. K.
openaire   +2 more sources

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