Dielectric Measurements Laboratory (Research Laboratory)

About:

Dielectric Measurement Lab at IIT Ropar is equipped with State of Art Spacecharge Measuring Equipment, Keithley Electrometer, 100 kV HV DC Source and High Voltage Amplifier (+/- 20 kV). This lab is first of its kind in the Department of Electrical Engineering and the first fully established research lab of the Department. This has been sponsored fully by IIT Ropar under ISIRD grant and has been one of the fastest completed projects among all such projects sanctioned by the institute.

Latest research on spacecharges in dielectrics, leakage current measurement upto fempto ampere level, DC & AC breakdown tests, measurement of capacitance, loss tangent  and characterization of dielectric materials is being promoted in this laboratory. It has produced several research papers in the very first year of its establishment and also attracted researchers from established IITs like IIT Delhi.

Photo: Inauguration of Dielectric Measurements Lab by the Ex-Director, IIT Ropar, Prof. M. K. Surappa

 

An article published in (international) EINA Magazine (Electrical Insulation News in Asea) speaks more about the lab in technical achievement. 

Currently, four research students are working for their thesis in this lab. Three of them already completed their comprehensive examination.

In the year 2012-13, during which it is established, it supported nine B.Tech students for completing their projects (which are hardware based projects) followed by six more B.Tech students in 2013-14. Currently nine B.Tech students are doing their projects (2014-15).

Location

 Room No: 241, First floor, Transit campus, IIT Ropar

Photo: Prof. Toshikatsu Tanaka of Waseda University Japan, during his visit to the IIT Ropar in 2012

 

 

Photo: Mr. Jaspreet Singh delivering seminar of historic defense of first Ph.D. thesis of the department !                                                                 

Photo: Prof. Yoshimichi Ohki of Waseda University, with Prof. Ramesh Garg, Dean, IIT Ropar, and students during his visit to IIT Ropar in December 2015

 

Publications

A) Publications out of B.Tech projects executed in the lab

In order to encourage B.Tech students an initiative has been taken to guide them to attend local conferences and also to contribute some papers in national journals. This has been done solely to introduce research culture among B.Tech students that has been observed in the developed countries by the investigator.

1. Jain, J. K., Duggal, S., Pathak, A., Chahal, J. S., and Reddy, C. C. “High Gain, Low Noise amplifier for pulsed electro-Acoustic method of spacecharge measurements” Journal of ISOI, March 2013.

2. Dan, B., Anurag, D., Vikas, L., Chahal, J. S., and Reddy, C. C. “On the Design of Sensitive Measuring Instrument for Leakage Current Measurement in Dielectrics.” National Symposium on Instrumentation (NSI 37), Paper PB-2.32, October 30-November 1, Chandigarh, India.

3. Jain, J. K., Duggal, S., Pathak, A., Chahal, J. S., and Reddy, C. C. “High Gain, Low Noise Amplifier for Pulsed Electro-Acoustic Method of Space Charge Measurements.” National Symposium on Instrumentation (NSI 37), Paper PB-2.18, October 30-November 1, Chandigarh, India.

4. Harshit; Garg, Ashish; Rana, Ankit; Chahal, J. S.; Reddy, C. C.; Sharma, Rohit, "Investigations on electric field and switching voltage in planar metal foil switches," IEEE, 9th International Conference on Industrial and Information Systems (ICIIS 2014) pp.1,3, 15-17 Dec. 2014

(The paper No. 1, above, is the first journal publication from BTech students of the department)

B) Publications by research scholars

In view of the internet revolution, dubious online journals with programmed/concocted impact factors have emerged. Therefore the Ph.D students of the lab are encouraged to publish only with well established publishers like IEEE/IET/CIGRE.

IEEE Conference Papers:

1. Chahal, J. S., and Reddy, C. C. "Simulation of pulsed electro acoustic method of space charge measurement." Properties and Applications of Dielectric Materials (ICPADM), IEEE 10th International Conference, 24-28 July 2012.

 (The paper No. 1, above, is the first publication from PhD students of the department and the first IEEE publication from PhD students)

2. Chahal, J. S.; Reddy, C. C., "Simulation of pulsed electro acoustic method of space charge measurement," 10th IEEE International Conference on theProperties and Applications of Dielectric Materials (ICPADM), 2012, vol., no., pp.1,4, 24-28 July 2012

3. Reddy, C. C., "Conduction and space charges in polymeric dielectrics and nanocomposites," 7th IEEE International Conference on Industrial and Information Systems (ICIIS), 2012, vol., no., pp.1,4, 6-9 Aug. 2012

4. Reddy, C. C., "On the thermal breakdown of AC cables and transformer bushings," 10th IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM), 2012  , vol., no., pp.1,4,

5. Reddy, C. C., "Effect of diffusion on space charge formation in dielectrics under steady-state DC conditions,"10th IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM), 2012, vol., no., pp.1,6, 24-28 July 201

6. Gupta, Ashish; Reddy, C.C., "Sparse de-convolution of space charge signal in PEA method," Signal Processing, Computing and Control (ISPCC), 2013 IEEE International Conference on, pp.1,4, 26-28 Sept. 2013

7. Tiwana, Alampratap Singh; Reddy, C.C., "Design and development of microcontroller driven, portable, low-cost HVDC source," Signal Processing, Computing and Control (ISPCC), 2013 IEEE International Conference on , vol., no., pp.1,4, 26-28 Sept. 2013

8.Tiwana, Alampratap Singh; Reddy, C.C., "Some investigations on temperature dependent breakdown of electric cables under no load," Condition Assessment Techniques in Electrical Systems (CATCON), 2013 IEEE International Conference on , vol., no., pp.379,382, 6-8 Dec. 2013

9. Chahal, J.S.; Tiwana, A.P.S.; Gupta, A.; Reddy, C.C., "Transmission line model for acoustic signal propagation in PEA system," IEEE International Conference on Electronics, Computing and Communication Technologies (IEEE CONECCT), 2014, vol., no., pp.1,5, 6-7 Jan. 2014

IEEE Journal/Transaction Papers:

[1] Chahal, J.S.; Reddy, C.C., "Modeling and Simulation of Pulsed Electroacoustic Measurement Method," IEEE Systems Journal, vol.8, no.4, pp.1283-1292, Dec. 2014

[2] Chahal, J.S.; Reddy, C.C., “Dependence of Space Charge Dynamics in LDPE on History of VoltageApplication”, IEEE Transactions on Dielectrics and Electrical Insulation, Accepted

[3] Tiwana, A. P. S., Reddy, C. C., "Life Estimation Using Damage Equalization Method and Step-stress Breakdown Tests", IEEE Trans. Dielectrics and Electrical Insulation, Accepted

IET/ELSEVERE Papers:

[4] Reddy, C.C.; Tiwana, A.P.S.; Gupta, A.; Chahal, J.S., "Role of interfacial surface area on the physical phenomena of nanocomposites," in Micro & Nano Letters, IET , vol.8, no.11, pp.841-844, November 2013

[5] Rashmi Thakur, Dipayan Das, Apurba Das, C.C. Reddy, Spatial charge distribution in fibrous dielectrics, Journal of Electrostatics, Volume 76, August 2015, Pages 1-7

Equipments developed in Lab

  • High Voltage Cockroft-Walton DC source (Upto 13 kV, 300 mA)
  • Low Ripple DC source (15 V, 500 mA)
  • LM335 based Temperature probe (-40 °C to 100 °C, Microcontroller based, LCD readout)
  • Volume Resistivity measurement setup (50 kV)

(The research scholars contributed to the development of the above equipment) 


Augmentation of undergraduate curriculum

  • Two experiments of undergraduate course EEL345 (High Voltage Engineering) were conducted in Dielectric measurements lab.
  • Simulation aspects of the undergraduate lab EEL345 were designed using PSPICE AD software in Dielectric measurements lab.

 

Photo: Pulsed Electro-Acoustic Measurement EquipmentPhoto: Electrode Arrangement in a Hot-Air Oven

 (For above measurements/investigations, academic institutions or industry may pl. contact the investigator. email: reddy@iitrpr.ac.in)

Investigator:

Dr. C. C. Reddy

Associate Professor, Department of Electrical Engineering

Research Students:

S. NoName of StudentDate of registrationArea of ResearchStatus  
1Jaspreet Singh ChahalJan 2012Space Charges in Dielectrics

Thesis Defended !

                                                

2Ashish GuptaAugust 2012Space Charges - Signal DeconvolutionComprehensive examination completed 
3Alam Pratap SinghJan 2012High Voltage Cable and JointComprehensive examination completed 
4Avnish Kumar UpadhyayJuly 2014Nano TechnologyDoing course work 
5Priyesh K PandeyJan 2016Nano-DielectricsDoing Course Work

 

JRFs:

     
6Sathya Moorthy2015Cables - BreakdownDST project

 

7Iyyappan, C.2016Nanocomposite DielectricsCPRI project

 

 Visitors to the lab

1. Prof. T. Tanaka, Waseda University, Japan

2. Prof. L. Satish, IISc, Bangalore

3. Prof. Gopakumar, IISc, Bangalore

4. Dr. Rashmi Thakur, from IIT Delhi

5. Mr. Venkash, W. S. Test Systems

6. Prof. Udaya Kumar, IISc Bangalore

7. Prof. Joy Thomas, IISc Bangalore

8. Prof. Satish L, IISc Bangalore (second time)

9. Prof. Sarathi Ramanujam, IIT Madras

10. Prof. Shanti Swarup, IIT Madras

11. Prof. Ravindra Arora, IIT Kanpur

12. Prof. Sivaji Chakravorti, Director, NIT Calicut

13. Prof. Yoshimichi Ohki, Waseda University, Japan

            

Photo: Prof. Toshikatsu Tanaka of Waseda University, Japan during a technical discussion followed by his lecture at IIT Ropar.

(He was the first professor of foreign origin to visit and deliver a lecture at electrical department)

            

Photos: Prof. Sivaji Chakravorti during Mr. Jaspreet Singh's thesis defense