Govindasamy Tamizhmani

Assoc Research Professor

  • 1039 Citations
  • 14 h-Index
1986 …2019

Research Output 1986 2018

Filter
Conference contribution
2017

Mitigation of PID in commercial PV modules using current interruption method

Bora, B., Oh, J., Tatapudi, S., Sastry, O. S., Kumar, R., Prasad, B. & TamizhMani, G. Jan 1 2017 Reliability of Photovoltaic Cells, Modules, Components, and Systems X. SPIE, Vol. 10370, 03700D

Research output: ResearchConference contribution

interruption
modules
degradation
glass
Degradation

Temperature coefficient of power (Pmax) of field aged PV modules: Impact on performance ratio and degradation rate determinations

Mahmood, F., Majeed, H., Agha, H., Ali, S., Tatapudi, S., Curtis, T. & TamizhMani, G. Jan 1 2017 Reliability of Photovoltaic Cells, Modules, Components, and Systems X. SPIE, Vol. 10370, 1037008

Research output: ResearchConference contribution

Degradation
Module
Coefficient
modules
degradation
2016
1 Citations

A novel technique for performing PID susceptibility screening during the solar cell fabrication process

Oh, J., Dahal, S., Dauksher, B., Bowden, S., Tamizhmani, G. & Hacke, P. Nov 18 2016 2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016. Institute of Electrical and Electronics Engineers Inc., Vol. 2016-November, p. 907-910 4 p. 7749741

Research output: ResearchConference contribution

Solar cells
Screening
Fabrication
Degradation
Antireflection coatings
1 Citations

Automation of risk priority number calculation of photovoltaic modules

Moorthy, M. K. & Tamizhmani, G. Nov 18 2016 2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016. Institute of Electrical and Electronics Engineers Inc., Vol. 2016-November, p. 1730-1735 6 p. 7749920

Research output: ResearchConference contribution

Automation
Defects
Spreadsheets
Degradation
Risk analysis
1 Citations

Climatological relevance to the soiling loss of photovoltaic modules

Naeem, M. & Tamizhmani, G. Apr 7 2016 2015 Saudi Arabia Smart Grid, SASG 2015. Institute of Electrical and Electronics Engineers Inc., 7449280

Research output: ResearchConference contribution

Rain
Dust
Cleaning
Atmospheric humidity
Experiments
1 Citations

Comparative study of 28 and 18 years field aged Siemens-Arco M55 modules in temperate and hot-dry climates

Chicca, M., Wohlgemuth, J. & Tamizhmani, G. Nov 18 2016 2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016. Institute of Electrical and Electronics Engineers Inc., Vol. 2016-November, p. 1686-1691 6 p. 7749911

Research output: ResearchConference contribution

Degradation
Spectroscopy
Quantum efficiency
Inspection
Glass
1 Citations

Defect and safety inspection of 6 PV technologies from 56,000 modules representing 257,000 modules in 4 climatic regions of the United States

Tatapudi, S., Libby, C., Raupp, C., Srinivasan, D., Kuitche, J., Bicer, B. & Tamizhmani, G. Nov 18 2016 2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016. Institute of Electrical and Electronics Engineers Inc., Vol. 2016-November, p. 1747-1751 5 p. 7749923

Research output: ResearchConference contribution

Inspection
Defects
Monocrystalline silicon
Polysilicon
3 Citations

Degradation rate evaluation of multiple PV technologies from 59,000 modules representing 252,000 modules in four climatic regions of the United States

Raupp, C., Libby, C., Tatapudi, S., Srinivasan, D., Kuitche, J., Bicer, B. & Tamizhmani, G. Nov 18 2016 2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016. Institute of Electrical and Electronics Engineers Inc., Vol. 2016-November, p. 255-260 6 p. 7749590

Research output: ResearchConference contribution

Power plants
Degradation
Cadmium telluride
Crystalline materials
Monocrystalline silicon

Effect of spatial temperature uniformity on outdoor photovoltaic module performance characterization

Umachandran, N. & Tamizhmani, G. Nov 18 2016 2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016. Institute of Electrical and Electronics Engineers Inc., Vol. 2016-November, p. 2731-2737 7 p. 7750148

Research output: ResearchConference contribution

Temperature
Temperature distribution
Simulators
Air
Hot Temperature

Regional soiling stations for PV: Soling loss analysis

Tamizhmani, G., King, B., Venkatesan, A., Deline, C., Pavgi, A., Tatapudi, S., Kuitche, J., Chokor, A. & Asmar, M. E. Nov 18 2016 2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016. Institute of Electrical and Electronics Engineers Inc., Vol. 2016-November, p. 1741-1746 6 p. 7749922

Research output: ResearchConference contribution

Rain
Dust
Time series
Atmospheric humidity
2015
1 Citations

Angle of incidence effect on five soiled modules from five different PV technologies

Rajasekar, V., Boppana, S. & Tamizhmani, G. Dec 14 2015 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015. Institute of Electrical and Electronics Engineers Inc., 7355970

Research output: ResearchConference contribution

Glass
Air
Soils
Rain
2 Citations

Application of flexible glass to prevent PID in PV modules

Oh, J., Tamizhmani, G., Bowden, S. & Garner, S. Dec 14 2015 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015. Institute of Electrical and Electronics Engineers Inc., 7355701

Research output: ResearchConference contribution

Degradation
Glass
Industrial plants
Salix
Leakage currents
1 Citations

Cleaning frequency optimization for soiled photovoltaic modules

Naeem, M. & Tamizhmani, G. Dec 14 2015 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015. Institute of Electrical and Electronics Engineers Inc., 7355972

Research output: ResearchConference contribution

Cleaning
Monitoring
1 Citations

Failure modes and effect analysis of module level power electronics

Sastry, A., Kulasekaran, S., Flicker, J., Ayyanar, R., Tamizhmani, G., Roy, J., Srinivasan, D. & Tilford, I. Dec 14 2015 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015. Institute of Electrical and Electronics Engineers Inc., 7355990

Research output: ResearchConference contribution

Power electronics
Failure modes
Electronics industry
Physics
Industry
1 Citations

Nondestructive techniques to determine degradation modes: Experimentation with 18 years old photovoltaic modules

Chicca, M. & Tamizhmani, G. Dec 14 2015 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015. Institute of Electrical and Electronics Engineers Inc., 7355709

Research output: ResearchConference contribution

Degradation
Dark currents
Voltage measurement
Electroluminescence
Infrared imaging

Performance and reliability evaluation of concentrated photovoltaic (CPV) power plants

Raupp, C., Tatapudi, S., Bicer, B. & Tamizhmani, G. Dec 14 2015 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015. Institute of Electrical and Electronics Engineers Inc., 7356185

Research output: ResearchConference contribution

Power plants
Hot Temperature
Controllers
Industry
2 Citations

Quantum efficiency loss after PID stress: Wavelength dependence on cell surface and cell edge

Oh, J., Bowden, S., Tamizhmani, G. & Hacke, P. Dec 14 2015 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015. Institute of Electrical and Electronics Engineers Inc., 7355629

Research output: ResearchConference contribution

Antireflection coatings
Quantum efficiency
Degradation
Wavelength
Chemical properties
1 Citations

Regional soiling stations for PV: Design, calibration and installation

King, B., Tamizhmani, G., Tatapudi, S., Rajasekar, V. & Boppana, S. Dec 14 2015 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015. Institute of Electrical and Electronics Engineers Inc., 7355974

Research output: ResearchConference contribution

Calibration
Cocoa
Monocrystalline silicon
Carbon Monoxide
Beaches
2 Citations

Selection of best methods to calculate degradation rates of PV modules

Shrestha, S. & Tamizhmani, G. Dec 14 2015 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015. Institute of Electrical and Electronics Engineers Inc., 7355703

Research output: ResearchConference contribution

Degradation
Incident solar radiation
1 Citations

Soiling and self-cleaning of PV modules under the weather conditions of two locations in Arizona and South-East India

Herrmann, W., Schweiger, M., Tamizhmani, G., Shisler, B. & Kamalaksha, C. Dec 14 2015 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015. Institute of Electrical and Electronics Engineers Inc., 7356131

Research output: ResearchConference contribution

Cleaning
Glass
Coatings
Power plants

Statistical methods to determine dominant degradation modes of fielded PV modules

Umachandran, N., Kuitche, J. & Tamizhmani, G. Dec 14 2015 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015. Institute of Electrical and Electronics Engineers Inc., 7355699

Research output: ResearchConference contribution

Statistical methods
Degradation
Defects
Statistical tests
Delamination

Working towards the development of a standardized artificial soiling method

Boppana, S., Rajasekar, V. & Tamizhmani, G. Dec 14 2015 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015. Institute of Electrical and Electronics Engineers Inc., 7355987

Research output: ResearchConference contribution

Monocrystalline silicon
Polysilicon
Soils
Glass
Coatings
2014
4 Citations

Angle of incidence effects on soiled PV modules

John, J., Rajasekar, V., Boppana, S., Tatapudi, S. & Tamizhmani, G. 2014 Reliability of Photovoltaic Cells, Modules, Components, and Systems VII. SPIE, Vol. 9179, 91790D

Research output: ResearchConference contribution

incidence
modules
Incidence
Angle
Module
7 Citations

Application of reverse bias recovery technique to address PID issue: Incompleteness of shunt resistance and quantum efficiency recovery

Oh, J., Bowden, S. & Tamizhmani, G. Oct 15 2014 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc., p. 925-929 5 p. 6925065

Research output: ResearchConference contribution

Quantum efficiency
Recovery
Degradation
Bias voltage
Durability
6 Citations

A statistical analysis on the cell parameters responsible for power degradation of fielded pv modules in a hot-dry climate

Janakeeraman, S. V., Singh, J., Kuitche, J., Mallineni, J. K. & Tamizhmani, G. Oct 15 2014 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc., p. 3234-3238 5 p. 6925624

Research output: ResearchConference contribution

Statistical methods
Degradation
Discoloration
Soldering alloys
Power plants
4 Citations

Degradation and failure modes of 26-year-old 200 kW power plant in a hot-dry desert climate

Olakonu, K., Belmont, J., Tatapudi, S., Kuitche, J. & Tamizhmani, G. Oct 15 2014 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc., p. 3207-3210 4 p. 6925618

Research output: ResearchConference contribution

Failure modes
Power plants
Degradation
Wear of materials
Monocrystalline silicon
1 Citations

Degradation rate evaluation of 26-year-old 200 kW power plant in a hot-dry desert climate

Belmont, J., Olakonu, K., Kuitche, J. & Tamizhmani, G. Oct 15 2014 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc., p. 3162-3166 5 p. 6925606

Research output: ResearchConference contribution

Power plants
Degradation
Solar power plants
Monocrystalline silicon
Failure modes
7 Citations

Effect of tilt angle on soiling of photovoltaic modules

Cano, J., John, J. J., Tatapudi, S. & Tamizhmani, G. Oct 15 2014 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc., p. 3174-3176 3 p. 6925610

Research output: ResearchConference contribution

Rain
Cleaning
Radiation
Water
8 Citations

Evaluation of 12-year-old PV power plant in hot-dry desert climate: Potential use of field failure metrics for financial risk calculation

Mallineni, J., Knisely, B., Yedidi, K., Tatapudi, S., Kuitche, J. & Tamizhmani, G. Oct 15 2014 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc., p. 3366-3371 6 p. 6925656

Research output: ResearchConference contribution

Power plants
Degradation
Durability
7 Citations

Failure and degradation modes and rates of PV modules in a hot-dry climate: Results after 16 years of field exposure

Yedidi, K., Tatapudi, S., Mallineni, J., Knisely, B., Kutiche, J. & Tamizhmani, G. Oct 15 2014 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc., p. 3245-3247 3 p. 6925626

Research output: ResearchConference contribution

Failure modes
Degradation
Delamination
Soldering alloys
Fatigue of materials
5 Citations

Influence of soiling layer on quantum efficiency and spectral reflectance on crystalline silicon PV modules

John, J. J., Tatapudi, S. & Tamizhmani, G. Oct 15 2014 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc., p. 2595-2599 5 p. 6925462

Research output: ResearchConference contribution

Silicon
Quantum efficiency
Solar cells
Crystalline materials
Cleaning
3 Citations

Non-intrusive cell quantum efficiency measurements of accelerated stress tested photovoltaic modules

Knisely, B., Kuitche, J., Tamizhmani, G., Korostyshevsky, A. & Field, H. Oct 15 2014 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc., p. 1870-1874 5 p. 6925289

Research output: ResearchConference contribution

Quantum efficiency
Silicon
Crystalline materials
Testing
Industry

Regional influence on module design quality: Qualification testing failure rate results from six regional labs of TUV rheinland around the world

Tamizhmani, G., Li, B., Shisler, B., Monokroussos, C., Dreier, C., Lim, S., Kamalaksha, C., Sugita, S. & Janknecht, E. Oct 15 2014 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc., p. 3580-3584 5 p. 6924880

Research output: ResearchConference contribution

Testing
Silicon
Crystalline materials
3 Citations

Scaling error of quantum efficiency measurements for heavily shunted cells in reliability research

Oh, J., Tamizhmani, G. & Bowden, S. Oct 15 2014 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc., p. 2635-2638 4 p. 6925470

Research output: ResearchConference contribution

Quantum efficiency
Photovoltaic cells
Stem cells
Solar cells
Durability
5 Citations

Soiling losses of utility-scale PV systems in hot-dry desert climates: Results from four 4-16 years old power plants

Mallineni, J., Yedidi, K., Shrestha, S., Knisely, B., Tatapudi, S., Kuitche, J. & Tamizhmani, G. Oct 15 2014 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc., p. 3197-3200 4 p. 6925615

Research output: ResearchConference contribution

Power plants
Cleaning
1 Citations

Tightening nameplate rating tolerance below 5%: Can it be rationally and objectively required in test standards?

Tamizhmani, G., Radhakrishnan, S. & Shisler, B. Oct 15 2014 2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014. Institute of Electrical and Electronics Engineers Inc., p. 3226-3229 4 p. 6925622

Research output: ResearchConference contribution

Nameplates
Statistical methods
Testing
Industry
2013
6 Citations

A framework for a comparative accelerated testing standard for PV modules

Kurtz, S., Wohlgemuth, J., Yamamichi, M., Sample, T., Miller, D., Meakin, D., Monokroussos, C., Tamizhmani, M., Kempe, M., Jordan, D., Bosco, N., Hacke, P., Bermudez, V. & Kondo, M. 2013 39th IEEE Photovoltaic Specialists Conference, PVSC 2013. Institute of Electrical and Electronics Engineers Inc., p. 132-138 7 p. 6744114

Research output: ResearchConference contribution

Testing
Industry
8 Citations

Degradation analysis of 1900 PV modules in a hot-dry climate: Results after 12 to 18 years of field exposure

Singh, J., Belmont, J. & Tamizhmani, G. 2013 Conference Record of the IEEE Photovoltaic Specialists Conference. Institute of Electrical and Electronics Engineers Inc., p. 3270-3275 6 p. 6745149

Research output: ResearchConference contribution

Degradation
Glass
Nameplates
Electric grounding
Power plants
4 Citations

Potential induced degradation of pre-stressed photovoltaic modules: Effect of glass surface conductivity disruption

Tatapudi, S., Ebneali, F., Kuitche, J. & Tamizhmani, G. 2013 Conference Record of the IEEE Photovoltaic Specialists Conference. Institute of Electrical and Electronics Engineers Inc., p. 1604-1609 6 p. 6744452

Research output: ResearchConference contribution

Degradation
Glass
Carbon
Electric potential
Temperature
5 Citations

Potential induced degradation of pre-stressed photovoltaic modules: Influence of polarity, surface conductivity and temperature

Ebneali, F., Tatapudi, S. & Tamizhmani, G. 2013 Conference Record of the IEEE Photovoltaic Specialists Conference. Institute of Electrical and Electronics Engineers Inc., p. 1548-1553 6 p. 6744440

Research output: ResearchConference contribution

Degradation
Temperature
Carbon
Electric potential
Thermal cycling
2 Citations

Power rating of photovoltaic modules per IEC 61853-1 standard using a new outdoor test method

Vemula, M. G., John, J. J., Kuitche, J. & Tamizhmani, G. 2013 Conference Record of the IEEE Photovoltaic Specialists Conference. Institute of Electrical and Electronics Engineers Inc., p. 724-728 5 p. 6744253

Research output: ResearchConference contribution

Polysilicon
Temperature
Hot Temperature
2 Citations

Validation of IEC 61853-2 standard (Draft): Angle of incidence effect on photovoltaic modules

Knisely, B., Janakeeraman, S. V., Kuitche, J. & Tamizhmani, G. 2013 Conference Record of the IEEE Photovoltaic Specialists Conference. Institute of Electrical and Electronics Engineers Inc., p. 675-680 6 p. 6744239

Research output: ResearchConference contribution

Glass
Light transmission
Air
Monocrystalline silicon
Polysilicon
2012
3 Citations

A field evaluation of the potential for creep in thermoplastic encapsulant materials

Kempe, M. D., Miller, D. C., Wohlgemuth, J. H., Kurtz, S. R., Moseley, J. M., Shah, Q., Tamizhmani, G., Sakurai, K., Inoue, M., Doi, T., Masuda, A., Samuels, S. L. & Vanderpan, C. E. 2012 Conference Record of the IEEE Photovoltaic Specialists Conference. p. 1871-1876 6 p. 6317958

Research output: ResearchConference contribution

Thermoplastics
Creep
Temperature
Crystalline materials
Glass
3 Citations

BAPV arrays: Side-by-side comparison with and without fan cooling

Chatterjee, S. & Tamizhmani, G. 2012 Conference Record of the IEEE Photovoltaic Specialists Conference. p. 537-542 6 p. 6317672

Research output: ResearchConference contribution

Fans
Cooling
Hot Temperature
Air
Temperature

Examination of a size-change test for photovoltaic encapsulation materials

Miller, D. C., Gu, X., Ji, L., Kelly, G., Nickel, N., Norum, P., Shioda, T., Tamizhmani, G. & Wohlgemuth, J. H. 2012 Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8472, 84720T

Research output: ResearchConference contribution

Encapsulation
examination
Substrates
Substrate
Module
2 Citations

Failure rate analysis of module design qualification testing - IV: 1997-2005 vs. 2005-2007 vs. 2007-2009 vs. 2009-2011

Tamizhmani, G., Li, B., Arends, T., Shisler, W., Voropayev, A., Parker, D., Kroner, K. & Armstrong, J. 2012 Conference Record of the IEEE Photovoltaic Specialists Conference. p. 2426-2431 6 p. 6318086

Research output: ResearchConference contribution

Testing
Insulation
Crystalline materials
Thin films
Silicon
4 Citations

Potential induced degradation (PID) study on accelerated stress tested PV modules

Goranti, S. & Tamizhmani, G. 2012 Conference Record of the IEEE Photovoltaic Specialists Conference. p. 2438-2441 4 p. 6318088

Research output: ResearchConference contribution

Degradation
Leakage currents
Environmental chambers
Electroluminescence
Thermal cycling

Statistical analysis of 10+ years field exposed c-Si modules performance degradation

Kuitche, J. M., Tamizhmani, G. & Pan, R. 2012 Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8472, 84720C

Research output: ResearchConference contribution

Statistical Analysis
Degradation
Module
statistical analysis
inspection

Statistical analysis of back surface vs. cell temperatures of c-Si modules using measurement error models

Kuitche, J. M., Pan, R. & Tamizhmani, G. 2012 Conference Record of the IEEE Photovoltaic Specialists Conference. p. 2953-2956 4 p. 6318204

Research output: ResearchConference contribution

Measurement errors
Statistical methods
Temperature
Hot Temperature
Crystalline materials
1 Citations

Statistical analysis of commercial c-Si PV module photovoltaic efficiency distribution over 10-years period

Kuitche, J. M., Sharma, V., Oh, J., Pan, R. & Tamizhmani, G. 2012 Conference Record of the IEEE Photovoltaic Specialists Conference. p. 2421-2425 5 p. 6318085

Research output: ResearchConference contribution

Statistical methods
Crystalline materials
Silicon
Temperature