Digital PI Controller using Anti-Wind-Up Mechanism for A Speed Controlled Electric Drive System
Srikanth Mandarapu1, Sreedhar Lolla2, M. V. Suresh Kumar3
1Srikanth Mandarapu, Department of Electrical & Electronics Engineering, JNTUK, Pydah College of Engineering & Technology, Visakhapatnam (A.P), India.
2Sreedhar Lolla, Department of Electrical & Electronics Engineering, JNTUK, Pydah College of Engineering & Technology, Visakhapatnam (A.P), India.
3M.V. Suresh Kumar, Department of Electrical & Electronics Engineering, JNTUK, Raghu Engineering College, Visakhapatnam (A.P), India.
Manuscript received on 11 June 2013 | Revised Manuscript received on 17 June 2013 | Manuscript Published on 30 June 2013 | PP: 239-242 | Volume-3 Issue-1, June 2013 | Retrieval Number: A0950063113/13©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: This paper discusses the implementation of Digital PI Controller Using Anti Wind-Up Mechanism For A Speed Controlled Electric Drive System. To eliminate the system zeros relocated proportional integral controller is implemented. Which in turn reduces the over shoots. The torque is not limited, inspite of the use of relocated proportional integral controller. The motor windings get damaged, if the torque reaches higher values. In order to limit this torque, we introduce a torque limiter, which limits the torque value to the permissible limits. Due to limited torque, over shoots are produced for large inputs. To eliminate these overshoots, with limited torque, we implement the anti-windup mechanism. The scheme is implemented in MATLAB and from the obtained results its possible use and limitations are studied for torque limits varying from +3000 to +7000 N-m.
Keywords: Anti Wind –Up, Digital Pi Controller, Quantizer, Torque Limiter.
Scope of the Article: Digital System and Logic Design