Qualification: 
Ph.D
Email: 
mr_sindhu@cb.amrita.edu

Dr. Sindhu M. R. joined Amrita School of Engineering in 2001. She received her B. Tech. (Electrical and Electronics Engineering) and M. Tech.(Power Systems) degrees from Calicut University, Kerala. She has been awarded her Ph. D. from Amrita Vishwa Vidyapeetham. Dr. Sindhu's Ph. D. work was on Adaptive Shunt Hybrid Filter for Power Quality Improvement. A laboratory model of adaptive shunt hybrid filter – adaptive shunt active and adaptive shunt passive filters – was set up and effectiveness is verified with different nonlinear loads.

Dr. Sindhu is carrying out DST funded project on An Intelligent Controller Based Shunt Hybrid Filter for Harmonic Mitigation in Adjustable Speed Drives. She has published 29 research papers in  international journals and conferences. Dr. Sindhu has guided many B. Tech. and M. Tech. projects. She has reviewed many international journals and conference papers. She has also served as Technical Committee Member in various International / National conferences.

She is guiding Ph. D., M. Tech. and B. Tech. students in the area of Power Quality, Power Electronics Applications to Power Systems, FACTS, and Soft Computing.

Publications

Publication Type: Journal Article

Year of Publication Publication Type Title

2016

Journal Article

Dr. Sindhu M. R., “Simplified Control Algorithm for Power Quality Improvement in Industrial Applications”, International Journal of Control Theory and Applications, vol. 8, no. 5, pp. 2021 - 2028, 2016.

2016

Journal Article

Dr. Sindhu M. R. and P., K., “Multiobjective Optimal Design and Control of Auto-tuned Passive Filter using Bacterial Foraging Algorithm to improve Power Quality and to minimize Power Losses”, International Journal of Control Theory and Applications, vol. 8, no. 5, pp. 2013 - 2020, 2016.

2016

Journal Article

A. Krishna D and Dr. Sindhu M. R., “Application of Static Synchronous Series Compensator to Enhance Power Transfer Capability in IEEE Standard Transmission System”, International Journal of Control Theory and Applications, vol. 8, no. 5, pp. 2029 - 2036, 2016.

2015

Journal Article

Dr. Sindhu M. R., Nair, M. G., and Nambiar, T. N. P., “Three Phase Auto-tuned Shunt Hybrid Filter for Harmonic and Reactive Power Compensation”, Procedia Technology, vol. 21, pp. 482 - 489, 2015.[Abstract]


Abstract Hybrid filters are highly recommended for harmonic and reactive compensation in existing installations. Since current harmonic compensation can limit voltage harmonics also to a great extent, shunt hybrid filters are preferred. The traditional shunt hybrid filter consists of shunt passive and shunt active filter. Here, shunt passive filter provides fixed compensation at all load conditions. Therefore, probably at low load conditions, shunt passive filter acts as major consumer. This embarrassing situation can be avoided by replacing traditional shunt passive filter with the shunt auto-tuned passive filter. The shunt auto-tuned passive filter uses an \{ANN\} based controller to select passive filter components to provide adequate harmonic and reactive compensation under all load conditions. Remaining harmonic and reactive power compensation are provided by \{ANN\} based active filter. The performance of the proposed hybrid filter was tested by simulation and laboratory experiments under various source/load conditions and the results show that the proposed shunt hybrid filter is adaptive to varying source/load conditions. More »»

2015

Journal Article

Sindhu S., Dr. Sindhu M. R., and Nambiar, T. N. P., “An Exponential Composition Algorithm Based UPQC for Power Quality Enhancement”, Procedia Technology, vol. 21, pp. 415 - 422, 2015.[Abstract]


Abstract Power quality is a major concern nowadays due to extensive use of smart controllers based power system equipment. These controlled load behaves with nonlinear characteristics. It introduces distortions in source voltage and source current at the point of common coupling (PCC). The distortions are propagated throughout the system and affects performance characteristics of all other loads connected to the same point of common coupling. Hence mitigation of power quality issues is essential to maintain good power quality at the point of common coupling. This paper deals with implementation of unified power quality conditioner (UPQC) to compensate for power quality issues voltage sag, voltage harmonics and current harmonics. \{UPQC\} is controlled by an exponential composition algorithm (ECA), which is proposed by the author. The performance of \{UPQC\} is examined with a nonlinear load and simulation studies using MATLAB/Simulink verify the satisfactory performance of UPQC. More »»

2015

Journal Article

Dr. Sindhu M. R., A.Nair, A., .V.Satheesan, A., and Kadirimangalam, P., “Power Quality Improvement using Shunt Active Filters for Three Phase Traction Drive”, International Journal of Applied Engineering Research, vol. 10, pp. 35677-35682, 2015.

2015

Journal Article

Dr. Sindhu M. R. and Nair, M. G., “An Adaptive Shunt Passive filter for Power Quality Improvement”, International Journal of Applied Engineering Research, vol. 10, pp. 615-621, 2015.

2015

Journal Article

Dr. Sindhu M. R., Jos, A., S, S., and Nambiar, T. N. P., “Design and simulation of an improved algorithm for three phase shunt active filter”, International Journal of Applied Engineering Research, vol. 10, pp. 844-849, 2015.

2015

Journal Article

Dr. Sindhu M. R., R, A., S, S., and Nambiar, T. N. P., “Power Quality Compensation for an Induction Motor Drive with UPQC”, International Journal of Applied Engineering Research, vol. 10, pp. 15227-15231, 2015.

2015

Journal Article

P. Krishnapriya and Dr. Sindhu M. R., “Multi-objective optimal design and control of auto-tuned passive filter using bacterial foraging algorithm to improve power quality and to minimise power losses”, International Journal of Control Theory and Applications, vol. 8, pp. 2013-2020, 2015.[Abstract]


This paper presents a multi-objective optimization algorithm based design and control of harmonic filters in a practical system. The selected system is an interconnected system consisting of nonlinear loads. The harmonics injected by the nonlinear loads are propagated through the system and lead to deteriorated power quality at the terminals of all the connected loads. The proposed methodology is selected such as to minimize total harmonic current and voltage distortion introduced into point of couplings and losses and to improve the source power factor. The optimization of the objectives is achieved with bacterial foraging algorithm. Simulation and experimental results verify the performance of the algorithm. More »»

2015

Journal Article

S. Sindhu, Dananjayan, D., and Dr. Sindhu M. R., “Simplified control algorithm for power quality improvement in industrial applications”, International Journal of Control Theory and Applications, vol. 8, pp. 2021-2028, 2015.[Abstract]


This paper deals with the design and development of a control strategy for improving the power quality in the grid. The proposed control algorithm aims at eliminating the harmonics, compensation of the reactive power and power factor correction thereby enhancing the performance of system. The overall system is designed, developed, operated in MATLAB-SIMULINK and system performance is validated by simulation results. More »»

2015

Journal Article

A. D. Krishna and Dr. Sindhu M. R., “Application of static synchronous series compensator (SSSC) to enhance power transfer capability in IEEE standard transmission system”, International Journal of Control Theory and Applications, vol. 8, pp. 2029-2036, 2015.[Abstract]


This paper presents implementation of Static Synchronous Compensator (SSSC) in an IEEE 5 bus system for real and reactive power flow control, to meet constraints on bus voltage magnitude, stability and thermal limits. This is made possible by appropriately controlling the magnitude and phase angle of injected voltage of series compensator. Simulation results obtained after performance study of SSSC in MATLAB/SIMULINK validate the effectiveness of the controller. The comparative study of the simulation results before and after compensation shows reduction in losses, overloading and improvement in bus voltage profile attained with SSSC compensation. More »»

2014

Journal Article

Dr. Sindhu M. R., Nair, G., and Manjula, N. T. N. P., “Dynamic Power Quality Compensator with an Adaptive ShuntHybrid Filter”, International Journal of Power Electronics and Drive System (IJPEDS), vol. 4, pp. 508–516, 2014.

2014

Journal Article

N. Swarupa, Vishnuvardhini, C., Poongkuzhali, E., and Dr. Sindhu M. R., “Power Quality Analysis Using LabVIEW”, International Journal of Research in Engineering and Technology, vol. 3, no. 3, pp. 322-331, 2014.[Abstract]


In the present scenario the ever increasing existence of non linear loads and the increasing number of distributed generation power systems in electrical grids modify the characteristics of voltage and current waveforms in power systems, which differ from pure sinusoidal wave. The target of this paper is to design an accurate measurement system and display the system parameters under distorted system conditions. Harmonics, Sub Harmonics, and Inter Harmonics are measured and displayed using LabVIEW. The voltage and current are sensed using sensors for various loads, which are then interfaced with the PC using DAQ (Data Acquisition) card and displayed using LabVIEW. The Hardware implementation includes setting up of test systems such as diode bridge rectifier and thyristor based converter with various loads such as resistive, inductive and DC shunt motor. Experimental results obtained for various loads and source conditions are cross verified with theoretical analysis. The response obtained in hardware and simulation proves the effectiveness of the system. More »»

2013

Journal Article

Dr. Sindhu M. R., Nair, M. G., and Nambiar, T. N. P., “Development of LabVIEW Based Harmonic Analysis and Mitigation Scheme with Shunt Active Filter for Power Quality Enhancement”, International Journal of Recent Technology and Engineering, vol. 2, no. 5, 2013.[Abstract]


Power quality issues, their modeling and mitigation techniques are became hot research topics soon after the introduction of solid state devices in power system. These nonlinear loads, power electronics based ASDs, UPSs are used in industries in large numbers for smooth operation and control. These equipment also introduce power quality issues such as harmonics, reduction in power factor, voltage unbalance, transients etc. These issues cause malfunction or damage of power system equipments. In this paper, harmonics and reactive power are considered as major issues and shunt active power filter is used for compensation. Three phase thyristor converter fed resistive load is considered as test system in this work. Different methods of harmonic analysis and mitigation techniques are surveyed by the author. In this paper, harmonic analysis of source current at the point of common coupling is done using LabVIEW based harmonic analyser, and the reactive and harmonic components of the source current are separated with the help of LabVIEW based intelligent control software. It also generates the switching signals to control voltage source inverter, used as active filter. Simulation and experimental studies using LabVIEW based control system shows the satisfactory performance More »»

2012

Journal Article

N. Surasmi and Dr. Sindhu M. R., “Optimum Allocation of Active Filters In A 4-Bus System Using Genetic Algorithm”, International Journal of Emerging Technology and Advanced Engineering, vol. 2, 2012.[Abstract]


Active power filters (APF) are employed for harmonic compensation in power systems. In this work genetic algorithms (GA) are used for the selection of optimum location of Active filters in power system. The purpose of the genetic algorithm is to minimize the cost of harmonic filters and, at the same time, to reach the harmonic limitations defined by standard IEEE-519. This algorithm is applied to 4-bus interconnected network for fixed harmonic load conditions. The control strategies selected to develop objective function are total harmonic distortion of voltage and current, telephone interference factor of voltage and current, harmonic transmission line loss and active filter current. More »»

2011

Journal Article

Dr. Sindhu M. R., Nair, M. G., and Nambiar, T. N. P., “An ANN Based Digital Controller with Three-Phase Shunt Active Power Filter for Power Quality Improvement”, International Review of Electrical Engineering, vol. 6, pp. 2837–2845, 2011.

2011

Journal Article

Dr. Sindhu M. R., S, S., Nair, M. G., and John, G. K., “Implementation of shunt hybrid filter using ICOS algorithm”, Asian Power Electronics Journal, vol. 5, pp. 7 - 12, 2011.

Publication Type: Conference Proceedings

Year of Publication Publication Type Title

2014

Conference Proceedings

Dr. Sindhu M. R., P, N. T. N., and S, B., “Development of a Laboratory Model to Teach Power System to Undergraduate Students”, Proceedings of Second National Conference on Power Electronics in Sustainable Energy Development (NCPSE - 2014). 2014.

2014

Conference Proceedings

Dr. Sindhu M. R., R, A., and Nambiar, T. N. P., “Modeling and Control of a three phase Traction Drive and Analysis of Harmonic distortion in Indian Railway Electric Supply System”, Proceedings of International Conference on Innovations in Information Embedded and Communication Systems . pp. 218-222, 2014.

Publication Type: Conference Paper

Year of Publication Publication Type Title

2014

Conference Paper

Dr. Sindhu M. R., Aneesh, P., Nair, M. G., and Nambiar, T. N. P., “Dynamic Harmonic and Reactive Power Compensation with an Adaptive Shunt Active Filter for Variable Speed Induction Motor Drive”, in International Journal of Power Electronics and Drive Systems, 2014, vol. 4, p. 508.[Abstract]


Major portion of nonlinear loads in industries are contributed by variable speed drives because of their desirable features such as energy saving, smooth control, flexible operation and fast response. These electric drives introduce large amount of current and voltage harmonic distortions at the point of common coupling. These distortions are propagated throughout the system and affect all other loads connected in the system. Hence these distortions are to be mitigated with suitable harmonic filters installed near to the respective load terminals. This paper presents an effective ANN based digital controller for shunt hybrid harmonic filter to provide instantaneous harmonic and reactive compensation. The performance of the adaptive shunt hybrid filter is verified by simulation and experimental studies under steady state and dynamic conditions. The results show that it is an effective, flexible and low rated hybrid filter configuration More »»

2014

Conference Paper

Dr. Sindhu M. R., S, K. P., and Nambiar, T. N. P., “Analysis, Estimation and Mitigation of Source Harmonics, Interharmonics in Low Frequency Inductive Loads”, in Proceedings of InternationalConference on Innovations in Information Embedded and Communication Systems , 2014.

Faculty Research Interest: 
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