Universal Journal of Electrical and Electronic Engineering Vol. 1(2), pp. 41 - 51
DOI: 10.13189/ujeee.2013.010205
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Analysis and Controller Design of a Torsional D.C. Drive under Resonance Conditions

M. Rizwan Khan^1,*, Shamsuddin Ahmad¹, M. Munir Azam², S. Kausar Hussain³, Firoz Khan^4
1 Department of Electrical Engineering, Aligarh Muslim University, Aligarh, India
² AEEE/Traction, Delhi Metro, New Delhi, India
³ IT Analyst, Tata Consultancy services Ltd., Mexico
⁴ IT Developer, Hewlett Packard Pvt. Ltd., Bangalore, India

ABSTRACT

The performance of an electric drive not only depends upon electrical parameters but is also significantly affected by mechanical features of drive like, elasticity of shaft, misalignment of shaft, eccentricity of driven load. For precise determination of performance, especially under dynamic conditions, the effect of these mechanical factors should be included in the analysis. The work reported in this paper deals with the analysis of a D.C. motor drive with elastic coupling and periodically varying load torque. Periodic variation of load torque may due to mechanical features or may be the characteristics of the driven load itself. A mathematical model of the drive system is developed and the system equations are expressed in state model form. Simulink models of the drive are developed and performance of drive system is studied for constant as well as pulsating load torque conditions. Under some specific conditions, system goes under resonance. Conditions leading to resonance are identified and drive performance under normal as well as resonance conditions is analyzed. The analyses presented reveal that mechanical failure of the drive system may occur due to excessive shear stress developed in the shaft under resonance conditions. Design of a controller is suggested to protect the drive from such failures under resonance condition.

KEYWORDS
D.C. Drive, Torsional Oscillations, Pulsating Load Torques, Resonance, Controller

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] M. Rizwan Khan , Shamsuddin Ahmad , M. Munir Azam , S. Kausar Hussain , Firoz Khan , "Analysis and Controller Design of a Torsional D.C. Drive under Resonance Conditions," Universal Journal of Electrical and Electronic Engineering, Vol. 1, No. 2, pp. 41 - 51, 2013. DOI: 10.13189/ujeee.2013.010205.

(b). APA Format:
M. Rizwan Khan , Shamsuddin Ahmad , M. Munir Azam , S. Kausar Hussain , Firoz Khan (2013). Analysis and Controller Design of a Torsional D.C. Drive under Resonance Conditions. Universal Journal of Electrical and Electronic Engineering, 1(2), 41 - 51. DOI: 10.13189/ujeee.2013.010205.