Publications

Pre-print versions of our research publications can be downloaded by clicking on the citations below.

E. Havugimana and M. K. Ranjram, “A Simple Data-Driven Machine Learning-based Software Package for Accurate Magnetic Core Loss Computation,” in 2025 IEEE Energy Conversion Congress and Exposition (ECCE), 2025.

J. R. Anderson and M. K. Ranjram, “The Harmonically Partitioned Power Converter Architecture: Single-Stage Single-Phase ac/dc Power Conversion Using Bidirectional Switches,” IEEE Transactions on Power Electronics, pp. 1–14, 2025

I. D. Willows, S. Radhakrishnan, and M. K. Ranjram, “Multi-Level Coupled Electronic and Magnetic System for Wide-Gain Constant Power Conversion,” in 2024 IEEE Energy Conversion Congress and Exposition (ECCE), Oct. 2024, pp. 7268–7275.

H. W. Min and M. K. Ranjram, “Improved High-Frequency, Medium-Voltage Isolation Planar Transformers,” in 2024 IEEE Energy Conversion Congress and Exposition (ECCE), Oct. 2024, pp. 1533–1540.

E. Havugimana and M. K. Ranjram, “Automated Core Loss Tester Error Characterization for New Contributions to Large-Scale Datasets,” in 2024 IEEE Energy Conversion Congress and Exposition (ECCE), Oct. 2024, pp. 6910–6917.

N. J. Kirkby and M. K. Ranjram, “Temperature Control for Automated High Frequency Core Loss Testing,” in 2024 IEEE Workshop on Control and Modeling for Power Electronics (COMPEL), Jun. 2024, pp. 1–8.

J. R. Anderson, N. J. Kirkby, and M. K. Ranjram, “Class-D Amplifier-Based Core Loss Measurements for High Frequency Magnetic Materials,” in 2024 IEEE Workshop on Control and Modeling for Power Electronics (COMPEL), Jun. 2024, pp. 1–8.

D. Tagare, S. Park, and M. K. Ranjram, “Emulation of Plasma Load Reactances by Saturation Control of Low-Permeability Inductors,” presented at the 2024 IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, USA, 2024

M. V. Joisher, R. S. Bayliss III, M. K. Ranjram, R. S. Yang, A. Jurkov, and D. J. Perreault, “High-Performance High-Power Inductor Design for High-Frequency Applications,” presented at the 2024 IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, USA, 2024.

E. Havugimana, S. Ahmed, and M. K. Ranjram, “Assessment of Cost Factors Impacting Planar Magnetic Windings,” in 2023 IEEE 24th Workshop on Control and Modeling for Power Electronics (COMPEL), Jun. 2023, pp. 1–8.

J. R. Anderson and M. K. Ranjram, “Automation of High-Frequency Magnetic Core Loss Data Collection,” in 2023 IEEE 24th Workshop on Control and Modeling for Power Electronics (COMPEL), Jun. 2023, pp. 1–8.

M. K. Ranjram and D. J. Perreault, “A 380-12 V, 1-kW, 1-MHz Converter Using a Miniaturized Split-Phase, Fractional-Turn Planar Transformer,” IEEE Transactions on Power Electronics, vol. 37, no. 2, pp. 1666–1681, Feb. 2022.

M. K. Ranjram and D. J. Perreault, “A Modeling Approach for the VIRT and Other Coupled Electronic and Magnetic Systems,” IEEE Journal of Emerging and Selected Topics in Power Electronics, pp. 1–1, 2021.

M. K. Ranjram, C. Zhang, and D. J. Perreault, “A Two-Stage Universal Input Charger With Wide Output Voltage Range,” IEEE Open Journal of Power Electronics, vol. 1, pp. 88–102, 2020.

M. K. Ranjram and D. J. Perreault, “Leveraging Multi-Phase and Fractional-Turn Integrated Planar Transformers for Miniaturization in Data Center Applications,” in 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics (COMPEL), Nov. 2020, pp. 1–8.

M. K. Ranjram, C. Zhang, and D. J. Perreault, “A Two-stage Universal Input Charger with Wide Output Voltage Range,” in 2019 IEEE Energy Conversion Congress and Exposition (ECCE), Sep. 2019, pp. 4685–4692.

M. K. Ranjram, P. Acosta, and D. J. Perreault, “Design Considerations for Planar Magnetic Terminations,” in 2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL), Jun. 2019, pp. 1–8. doi:

I. Moon, M. K. Ranjram, S. Chakraborty, and D. J. Perreault, “A Wide Operating Range Converter Using a Variable-Inverter-Rectifier-Transformer with Improved Step-Down Capability,” in 2019 IEEE Applied Power Electronics Conference and Exposition (APEC), Mar. 2019, pp. 1575–1582.

M. K. Ranjram, I. Moon, and D. J. Perreault, “Variable-inverter-rectifier-transformer: a hybrid electronic and magnetic structure enabling adjustable high step-down conversion ratios,” in 2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL), Jul. 2017, pp. 1–8.

S. Rivera, M. Ranjram, and P. W. Lehn, “A high-efficiency multi-port DC-DC converter for photovoltaic energy conversion systems,” in IECON 2016 – 42nd Annual Conference of the IEEE Industrial Electronics Society, Oct. 2016, pp. 6722–6727.

M. Ranjram and P. W. Lehn, “A multiport power-flow controller for DC transmission grids,” IEEE Transactions on Power Delivery, vol. 31, no. 1, pp. 389–396, Feb. 2016.

G. J. Kish, M. Ranjram, and P. W. Lehn, “A Modular Multilevel DC/DC Converter With Fault Blocking Capability for HVDC Interconnects,” IEEE Transactions on Power Electronics, vol. 30, no. 1, pp. 148–162, Jan. 2015.

M. Ranjram and P. W. Lehn, “A three-port power flow controller for HVDC grids,” in 2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia), Jun. 2015, pp. 1815–1822.

Y. Han, M. Ranjram, and P. W. Lehn, “A bidirectional multi-port DC-DC converter with reduced filter requirements,” in 2015 IEEE 16th Workshop on Control and Modeling for Power Electronics (COMPEL), Jul. 2015, pp. 1–6.

M. Ranjram, G. Simeonov, and P. W. Lehn, “A high step-up transformerless DC/DC converter with flat efficiency,” in IECON 2014 – 40th Annual Conference of the IEEE Industrial Electronics Society, Oct. 2014, pp. 1034–1040.