Application of dynamic braking to mine hoisting systems

Barkand, T.D.; Helfrich, William

doi:10.1109/28.8995

Cited by 20 publications

(7 citation statements)

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“…Scieszka shows that the authors used pointwise calculations applying finite-element methods and other numerical approaches as well as not evaluated effect of basic parameters of shoe beam on the liningbrake rim contact interaction. As a rule, a method of calculation of braking mechanisms applied in mine hoisting machines (MHMs) is used as analytical model (Barkand & Helfrich, 1988;Nosko, 2017). The method, described in the papers by B.L.…”

Section: The Problem Definitionmentioning

confidence: 99%

Development of a model of contact shoe brake-drum interaction in the context of a mine hoisting machine

Zabolotnyi¹,

Жупієв²,

Molodchenko³

2017

Min. miner. depos,

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Purpose. To develop models of contact brake shoe-drum interaction of a mine hoisting machine while braking, taking into account final bending stiffness of a beam and the effect of friction forces on the distribution of a contact pressure in it to make recommendations as for the rational design of a brake beam.Methods. Laws of contact force distribution, forces within a vertical post, and braking moment arising in the braking process have been formulated with the help of exclusion method and Euler's method. Findings.Areas to apply the hypotheses on absolute stiffness of a beam and the non-effect of friction forces on the distribution of contact pressure in it while calculating force of brakes of mine hoisting machines have been analyzed. Physical and mathematical models of contact interaction between a brake beam of a mine hoisting machine and a drum in the braking process have been developed. Originality.For the first time, physical model of a brake lining in the form of a group of elastic non-interacting bodies of Winkler foundation has been developed. The bodies resist compression and transfer through themselves distributed friction forces arising between brake drum and brake shoe; the friction forces are meant for limiting balance state in accordance with Coulomb's law; physical model of a brake beam in the shape of uniform-section circular bar mounted on a vertical post and interacting with a brake drum through brake lining loaded with distributed normal and tangential load modeling contact brake shoe-drum interaction, and a vertical post has been modeled as a movable pivot point located in the medial part of the circular bar. For the first time, mathematical model to determine both tangential and normal forces acting on a brake beam has been formulated. Practical implications.The developed recommendations concerning the use of different models of the braking process make it possible to generate the most rational model for force calculation of a brake beam using finite-element method. Keywords: physical and mathematical models of beam and lining, mine hoisting machine shoe brake, Euler's method, Coulomb's law

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Section: The Problem Definitionmentioning

confidence: 99%

Development of a model of contact shoe brake-drum interaction in the context of a mine hoisting machine

Zabolotnyi¹,

Жупієв²,

Molodchenko³

2017

Min. miner. depos,

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“…Every designed braking system always meets the distinctive demand of response of motor, maintaining the motor direction and maintaining the energy recovery of the system. To rectify the above distinctive demand motor are equipped with a braking system [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…The disadvantage of plugging is that some amount of power dissipated during plugging. This dissipated energy in plugging braking can overcome by other methods [8][9][10]. Improved energy efficiency methods in electric vehicles are dynamic and regenerative braking.…”

Section: Introductionmentioning

confidence: 99%

Researchon Regenerative and Dynamic Braking Performance in Motor Application

2019

IJITEE

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This paper presents the analysis of the different braking system and fed into the motor application. Electric braking plays a major role in the working of electric vehicles the performance development, energy utilization. So the braking system is used to enhance the performance of the motor. Here the analysis of regenerative and dynamic braking performance in an induction motor.In energy generation context, regenerative braking is very proficient. On the other hand in dynamic braking, the energy will not fed back to the source, but the performance of regenerative braking is the generated power fed back to the source. Control techniques have used to utilize the energy efficiency of regenerative braking and analysis their performance in regenerative braking. In this study, comparison has been made between the utilization of regenerated power in dynamic braking and regenerative braking

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“…In order to improve reliability in braking, Electrical braking is more preferred. Much preferably Dynamic braking or Regenerative braking is employed [1], The references [2], [3] considered only the behavior of motor energized by either a Chopper or a Converter during braking. But in case of traction and Mine winders motors should be stopped in specified time to improve its overall performance.…”

Section: Introductionmentioning

confidence: 99%

An Algorithm for the Analysis of Transient and Steady States in a Dc Motor

Kiran

Bharadwaj

2014

IJEEE

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Braking is one of the important operations in electric drives. Due to their friendly speed torque characteristics, DC motors are still in domination for industrial applications. In this paper an attempt has been made to develop a systematic algorithm for determining braking time of DC motor during Dynamic braking. With this algorithm braking time of the motor can be estimated so that more accurate simulation of the DC motor may be obtained.

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Application of dynamic braking to mine hoisting systems

Cited by 20 publications

References 0 publications

Development of a model of contact shoe brake-drum interaction in the context of a mine hoisting machine

Development of a model of contact shoe brake-drum interaction in the context of a mine hoisting machine

Researchon Regenerative and Dynamic Braking Performance in Motor Application

An Algorithm for the Analysis of Transient and Steady States in a Dc Motor

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