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Research Output

  • 11 Conference contribution
  • 4 Article
2020

Water immersion cooling of high power density electronics

Birbarah, P., Gebrael, T., Foulkes, T., Stillwell, A., Moore, A., Pilawa Podgurski, R. C. N. & Miljkovic, N., Feb 2020, In : International Journal of Heat and Mass Transfer. 147, 118918.

Research output: Contribution to journalArticle

2019

A 6-level flying capacitor multi-level converter for single phase buck-type power factor correction

Candan, E., Stillwell, A., Brooks, N. C., Abramson, R. A., Strydom, J. & Pilawa-Podgurski, R. C. N., May 24 2019, 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019. Institute of Electrical and Electronics Engineers Inc., p. 1180-1187 8 p. 8722199. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC; vol. 2019-March).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Active voltage balancing in flying capacitor multi-level converters with valley current detection and constant effective duty cycle control

Stillwell, A., Candan, E. & Pilawa-Podgurski, R. C. N., Nov 2019, In : IEEE Transactions on Power Electronics. 34, 11, p. 11429-11441 13 p., 8664674.

Research output: Contribution to journalArticle

A Five-Level Flying Capacitor Multilevel Converter with Integrated Auxiliary Power Supply and Start-Up

Stillwell, A. & Pilawa-Podgurski, R. C. N., Mar 2019, In : IEEE Transactions on Power Electronics. 34, 3, p. 2900-2913 14 p., 8371641.

Research output: Contribution to journalArticle

Design optimization of a 1500 v GaN-Based solar inverter using flying capacitor multi-level converter stages

Stillwell, A. & Pilawa-Podgurski, R. C. N., Sep 2019, 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019. Institute of Electrical and Electronics Engineers Inc., p. 4605-4612 8 p. 8913007. (2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2018

Constant Effective Duty Cycle Control for Flying Capacitor Balancing in flying Capacitor Multi-Level Converters

Stillwell, A., Candan, E. & Pilawa-Podgurski, R. C. N., Sep 10 2018, 2018 IEEE 19th Workshop on Control and Modeling for Power Electronics, COMPEL 2018. Institute of Electrical and Electronics Engineers Inc., 8460000. (2018 IEEE 19th Workshop on Control and Modeling for Power Electronics, COMPEL 2018).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Design of a 1 kV bidirectional DC-DC converter with 650 v GaN transistors

Stillwell, A., Blackwell, M. E. & Pilawa-Podgurski, R. C. N., Apr 18 2018, APEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition. Institute of Electrical and Electronics Engineers Inc., p. 1155-1162 8 p. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC; vol. 2018-March).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Dynamic Level Selection for Full Range ZVS in Flying Capacitor Multi-Level Converters

Blackwell, M. E., Stillwell, A. & Pilawa-Podgurski, R. C. N., Sep 10 2018, 2018 IEEE 19th Workshop on Control and Modeling for Power Electronics, COMPEL 2018. Institute of Electrical and Electronics Engineers Inc., 8460086. (2018 IEEE 19th Workshop on Control and Modeling for Power Electronics, COMPEL 2018).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2017

A 2-kW Single-Phase Seven-Level Flying Capacitor Multilevel Inverter with an Active Energy Buffer

Lei, Y., Barth, C., Qin, S., Liu, W. C., Moon, I., Stillwell, A., Chou, D., Foulkes, T., Ye, Z., Liao, Z. & Pilawa Podgurski, R. C. N., Nov 2017, In : IEEE Transactions on Power Electronics. 32, 11, p. 8570-8581 12 p., 7811253.

Research output: Contribution to journalArticle

A 5-level flying capacitor multi-level converter with integrated auxiliary power supply and start-up

Stillwell, A., Robert, C. N. & Pilawa-Podgurski, May 17 2017, 2017 IEEE Applied Power Electronics Conference and Exposition, APEC 2017. Institute of Electrical and Electronics Engineers Inc., p. 2932-2938 7 p. 7931113. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2016

A 2 kW, single-phase, 7-level, GaN inverter with an active energy buffer achieving 216 W/in3 power density and 97.6% peak efficiency

Lei, Y., Barth, C., Qin, S., Liu, W. C., Moon, I., Stillwell, A., Chou, D., Foulkes, T., Ye, Z., Liao, Z. & Pilawa Podgurski, R. C. N., May 10 2016, 2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016. Institute of Electrical and Electronics Engineers Inc., p. 1512-1519 8 p. 7468068. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC; vol. 2016-May).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

A method to extract low-voltage auxiliary power from a flying capacitor multi-level converter

Stillwell, A., Lei, Y. & Pilawa Podgurski, R. C. N., Aug 30 2016, 2016 IEEE 17th Workshop on Control and Modeling for Power Electronics, COMPEL 2016. Institute of Electrical and Electronics Engineers Inc., 7556747. (2016 IEEE 17th Workshop on Control and Modeling for Power Electronics, COMPEL 2016).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

An interleaved 1-to-6 step-up resonant switched-capacitor converter utilizing split-phase control

Stillwell, A., Heeger, D., Meyer, C., Bedair, S. & Pilawa-Podgurski, R. C. N., Jan 1 2016, ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings. Institute of Electrical and Electronics Engineers Inc., 7854854. (ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

A reliability assessment of series-stacked servers with server-to-bus differential power processing

Candan, E., Stillwell, A. & Pilawa Podgurski, R. C. N., Nov 18 2016, 2016 IEEE International Telecommunications Energy Conference, INTELEC 2016. Institute of Electrical and Electronics Engineers Inc., 7749094. (INTELEC, International Telecommunications Energy Conference (Proceedings); vol. 2016-November).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2015

A resonant switched-capacitor converter with GaN transistors for series-stacked processors with 99.8% power delivery efficiency

Stillwell, A. & Pilawa Podgurski, R. C. N., Oct 27 2015, 2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015. Institute of Electrical and Electronics Engineers Inc., p. 563-570 8 p. 7309739. (2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015).

Research output: Chapter in Book/Report/Conference proceedingConference contribution