Publications

Published in peer reviewed journals

  1. Duman, T.; Marti, S.; Moonem, M.A.; Abdul Kader, A.A.R.; Krishnaswami, H. A Modular Multilevel Converter with Power Mismatch Control for Grid-Connected Photovoltaic Systems. Energies 2017, 10, 698.
  2. Richardson, W.; Krishnaswami, H.; Vega, R.; Cervantes, M. A Low Cost, Edge Computing, All-Sky Imager for Cloud Tracking and Intra-Hour Irradiance Forecasting. Sustainability 2017, 9, 482.
  3. Moonem, M.A.; Pechacek, C.L.; Hernandez, R.; Krishnaswami, H. Analysis of a Multilevel Dual Active Bridge (ML-DAB) DC-DC Converter Using Symmetric Modulation. Electronics 2015, 4, 239-260.
  4. H. Krishnaswami, N. Mohan; “Three-Port Series-Resonant DC–DC Converter to Interface Renewable Energy Sources With Bidirectional Load and Energy Storage Ports,” Power Electronics, IEEE Transactions on, vol.24, no.10, pp. 2289-2297, Oct. 2009.
  5. H. Krishnaswami and V. Ramanarayanan; “Control of high frequency ac link electronic transformer,” IEE Proceedings in Electric Power Applications, vol. 152, no. 3, pp. 509-516, May 2005.

Refereed conference proceedings

  1. J. A. Ahamioje and H. Krishnaswami, “Interconnection study of distributed PV systems byinterfacing Matlab with OpenDSS and GIS,” Accepted for Publication in 2017 IEEE Photovoltaics Specialists Conference (PVSC).
  2. S. Marti and H. Krishnaswami, “Novel MPPT algorithm for active power control of multi-level dual-active bridge PV converter implemented in NI myRIO,” Accepted for Publication in 2017 IEEE Photovoltaics Specialists Conference (PVSC).
  3. W. Richardson, H. Krishnaswami, L. Shephard and R. Vega, “Machine Learning versus Ray- Tracing to Forecast Irradiance for an Edge-Computing SkyImager,” Accepted for Publication in 2017 Intelligent Systems Application to Power Systems (ISAP), USA.
  4. T. Duman, M.A. Moonem and H. Krishnaswami, “Capacitor Voltage balancing in a Neutral-point Clamped Multilevel dc-dc Dual Active Bridge Converter,” To be published in Proceedings of 2017 EEE 8th International Symposium on Power Electronics for Distributed Generation Systems (PEDG 2017).
  5. S. Marti and H. Krishnaswami, “Control algorithm for port power imbalance in two-stage, N-port modular multilevel cascaded photovoltaic inverters,” 2017 IEEE Texas Power and Energy Conference (TPEC), College Station, TX, 2017, pp. 1-6.
  6. S. Marti and H. Krishnaswami, “Sensorless real-time active power control of PV systems,” GEARED Workshop, Distributech 2017.
  7. T. Janssen and H. Krishnaswami, “Fault-tolerant control for a modular cascaded NPC Inverter Configuration,” Proceedings of 2016 IEEE 17th Workshop on Control and Modeling for Power Electronics, COMPEL Trondheim 2016.
  8. T. Janssen and H. Krishnaswami, “Voltage and current control of a multi-port NPC inverter configuration for a grid-connected photovoltaic system,” Proceedings of 2016 IEEE 17th Workshop on Control and Modeling for Power Electronics, COMPEL, Trondheim 2016.
  9. M. Cervantes, R. Vega, W. Richardson and H. Krishnaswami; “Utilization of Low Cost, Sky-Imaging Technology for Irradiance Forecasting of Distributed Solar Generation,” 2016 IEEE Green Technologies Conference (GreenTech), Kansas City, MO, 2016, pp. 142-146.
  10. Meghasai; Monger, S.; Vega, R.; Krishnaswami, H., “Simulation of smart functionalities of photovoltaic inverters by interfacing OpenDSS and Matlab,” in Control and Modeling for Power Electronics (COMPEL), 2015 IEEE 16th Workshop on, pp.1-6, 12-15 July 2015.
  11. S. Marti, R. Hernandez, H. Krishnaswami; “Implementation of Maximum Power Point Tracking Control Using NI myRIO-1900 for Multi-Level Dual-Active Bridge DC-DC Converter,” GEARED Workshop, North American Power Symposium, 4-6 October 2015.
  12. M.A. Moonem, T. Duman, H. Krishnaswami; “Capacitor Voltage balancing in a Neutral-point Clamped Multilevel dc-dc Dual Active Bridge Converter,” GEARED Workshop, North American Power Symposium, 4-6 October 2015.
  13. M.A. Moonem, T. Duman, H. Krishnaswami; “Power Converter Configuration with Integrated High-Frequency Transformer for High-Voltage Grid-Connected Large-Scale Photovoltaic System” Photovoltaic Specialists Conference (PVSC), 2014 IEEE, June 2014, Denver, CO, USA.
  14. M.A. Moonem, H. Krishnaswami; “Control and Configuration of Three-Level Dual-Active Bridge DC-DC Converter as a Front-End Interface for Photovoltaic System,” Applied Power Electronics Conference and Exposition (APEC), 2014 IEEE, pp.3017-3020, 16-20 March 2014,Dallas, TX, USA.
  15. J. Nummikoski, Y.S. Manjili, R. Vega and H. Krishnaswami; “Adaptive Rule Generation for Solar Forecasting: Interfacing with a Knowledge-Base Library,” Photovoltaic Specialists Conference (PVSC), 2013 IEEE, 16-21 June 2013, Tampa, FL, USA.
  16. M.A. Moonem, H. Krishnaswami; “Analysis and Control of Multi-level Dual Active Bridge DC-DC Converter,” Energy Conversion Congress and Exposition (ECCE), 2012 IEEE, pp.1556-1561, 16-20 Sept. 2012, Raleigh, NC, USA.
  17. M.A. Moonem, H. Krishnaswami; ” Analysis of Dual Active Bridge based Power Electronic Transformer as a Three-Phase Inverter,” Industrial Electronics Society Annual Conference (IECON), 2012 IEEE, pp. 237-242, 25-28 Oct. 2012, Montreal, Canada.
  18. E. Mohyedinbonab, E. Morales, H. Krishnaswami, M. Jamshidi; “Bi-directional Multi-Mode Grid-Tied Converter for Solar Energy Conversion Systems,” Proceedings of World Automation Conference, 2012, 24-28 June 2012, Puerto Vallarta, Mexico.
  19. Touseef F. Mohammed, H. Krishnaswami; “Voltage Profile Simulation using OpenDSS in High Penetration PV Scenario,” IEEE T&D Conference, Orlando, 2-10 May 2012, Orlando, FL, USA.
  20. H. Krishnaswami; “Photovoltaic microinverter using single-stage isolated high-frequency link series resonant topology,” Energy Conversion Congress and Exposition (ECCE), 2011 IEEE, pp.495-500, 17-22 Sept. 2011, Phoenix, AZ, USA.
  21. S.N. Vaishnav, H. Krishnaswami; “Single-stage isolated bi-directional converter topology using high frequency AC link for charging and V2G applications of PHEV,” Vehicle Power and Propulsion Conference (VPPC), 2011 IEEE, pp.1-4, 6-9 Sept.2011, Chicago, IL, USA.
  22. H. Krishnaswami, N. Mohan, “Constant switching frequency series resonant three-port bidirectional dc-dc converter,” in Proc. IEEE Power Electronics Specialists Conference (PESC’08), 2008, pp. 1640–1645, 15-19 June 2008, Rhodes, Greece
  23. H. Krishnaswami, N. Mohan, “Simulation model of a three-port bi-directional series resonant dcdc converter to determine component specifications,” in Proc. SCS Grand Challenges in Modeling and Simulation (GCMS’08), pp. 180-184, 16-19 June 2008, Edinburgh, Scotland
  24. H. Krishnaswami, N. Mohan, “A current-fed three-port bi-directional dc-dc converter,” in Proc. IEEE International Telecommunications Energy Conference (INTELEC’07), 2007, pp. 523–526, Sept. 20 – Oct 4, 2007, Rome, Italy.
  25. R. K. Gupta, H. Krishnaswami, N. Mohan, “A unified analysis of ccm boost pfc for various current control strategies,” in Proc. IEEE Power Electronics, Drives and Energy Systems (PEDES’06), 2006, pp. 1–5, New Delhi, India.

Patents

  1. J. Nummikoski, R. Vega and H. Krishnaswami, “A Novel Tool for Intra-hour Solar Forecasting,” Patent application filed by UTSA Office of Technology Commercialization on April 2015, Serial Number 61/977,834.
  2. M. Cervantes, R. Vega, W. Richardson and H. Krishnaswami, “Low-cost superimager to map, forecast and publish distributed solar energy predictions,” Patent application filed by UTSA Office of Technology Commercialization on June 2016, Serial Number 62/168,403.
  3. H. Krishnaswami and G. Shanmugavel, “Proximity detector and radiography system,” US Patent Number 6985556B2, January 2006

Invited/Non-refereed Presentations

H. Krishnaswami, “Advances in the Electric Power Engineering Curriculum at UTSA,” GridED Tech Transfer Workshop, Dallas, TX, April 2017.

H. Krishnaswami, UVIG workshop on variable generation forecasting applications to utility planning and operations, “Distributed Power Forecasting”, UVIG, Denver, CO. (February18, 2015).

H. Krishnaswami, “N-port converter architecture for large-scale PV plants,” US Department of Energy SunShot Summit and Peer Review, May 2014

H. Krishnaswami, “Reforming power related curriculum – power electronics,” ONR/NSF Sponsored Workshop on Electric Energy Systems Curriculum for Sustainability 2-5 Feb 2012, Napa, CA, USA.

G. Trevino, C. Fronda, B. Kelley, M. Jamshidi, H. Krishnaswami and L. Shephard, “Hi-Fi PV: Advanced Data Acquisition to Enable Solar Production Forecasting,” NI Week, August, 2012.

H. Krishnaswami, “Power Electronics Teaching Lab Implementation: Barriers and Solutions,” DOE Consortium Workshop, University of Minnesota, 8-9 Aug 2011, Minneapolis, MN, USA.