About

Dionysios Aliprantis is a Professor of Electrical and Computer Engineering at Purdue University, based in the West Lafayette campus. He holds a diploma in Electrical and Computer Engineering from the National Technical University of Athens, Greece, obtained in 1999, and a PhD in Electrical and Computer Engineering from Purdue University, completed in 2003. His research focuses on electric machines and drives, power systems, integration of renewable energy sources, electric transportation, and smart grids. His primary area of interest is Power and Energy Systems.

Research topics

• Computer Science
• Artificial Intelligence
• Physics
• Electronic engineering
• Mechanical engineering
• Engineering
• Electrical engineering
• Algorithm
• Applied mathematics
• Control engineering
• Structural engineering
• Mathematical optimization
• Quantum mechanics
• Mathematics

Selected publications

• Roadway Validation of a Receiver-Side Power Control for a 200-kW DWPT System Developed for Heavy-Duty Vehicles

  IEEE Journal on Wireless Power Technologies · 2026-01-01

  articleOpen access
  PublisherDOI

• Sensitivity-based voltage constraints for optimal power flow in low-voltage distribution feeders

  Sustainable Energy Grids and Networks · 2025-07-25

  articleSenior author
  PublisherDOI

• Dynamic Modeling of Load Demand in Electrified Highways Based on the EV Composition

  ArXiv.org · 2025-11-25

  preprintOpen access

  Electrified roadways (ERs) equipped with the dynamic wireless power transfer (DWPT) technology can achieve longer driving range and reduce on-board battery requirements for electric vehicles (EVs). Due to the spatial arrangement of transmitter (Tx) coils embedded into the ER pavement, the power drawn by the EV's receiver (Rx) coil is oscillatory in nature. Therefore, understanding the dynamic behavior of the total DWPT load is important for power system dynamic studies. To this end, we model the load of individual EVs in the time and frequency domains for constant EV speed. We establish that a nonlinear control scheme implemented in existing DWPT-enabled EVs exhibits milder frequency harmonics compared to its linear alternative. According to this model, the harmonics of an EV load decrease in amplitude with the Rx coil length. We further propose and analyze stochastic models for the total DWPT load served by an ER segment. Our models explain how the EV composition on the ER affects its frequency spectrum. Interestingly, we show that serving more EVs with longer Rx coils (trucks) does not necessarily entail milder harmonics. Our analytical findings are corroborated using realistic flows from a traffic simulator and offer valuable insights to grid operators and ER designers.

  PublisherOA PDFDOI

• Power on the Move: Indiana’s high-power dynamic wireless power transfer testbed.

  IEEE Electrification Magazine · 2025-12-01 · 3 citations

  article1st authorCorresponding

  This article presents the development of a Dynamic Wireless Power Transfer (DWPT) testbed constructed on a public roadway in West Lafayette, Indiana, USA. We outline the project’s inception and planning, emphasizing key design decisions that enable the system to deliver up to 165 kW (average) to heavy-duty vehicles traveling at highway speeds. To achieve this high power level, we developed three-phase transmitter and receiver coils—an uncommon approach in wireless power transfer systems. The receiver is installed on a Cummins Class 8 electric truck, which serves as the test vehicle. We detail the design, fabrication, and installation of the three-phase coils. In parallel, the project includes a public engagement initiative aimed at fostering understanding of DWPT technologies and encouraging public-private partnerships essential for large-scale roadway electrification. Highlights from community outreach efforts are shared. Finally, we present roadway testing data that validate system performance and identify future research directions.

  PublisherDOI

• Fabrication and Characterization of Roadway-Embedded DWPT Transmitter Coils

  2025-06-18

  article

  A description of the techniques used to fabricate and evaluate the performance of three-phase transmitter coils used in a dynamic wireless power transfer pilot testbed in Indiana is provided. To perform the evaluation, a test apparatus was developed to characterize coil resistance and impedance. Characterizations were then performed before and after placement of a concrete overlay, after a nine-month fall/winter construction hiatus, and upon final coil lead termination prior to inverter installation. Test results demonstrate that the coils met and maintained targeted performance throughout all steps in the construction process.

  PublisherDOI

• Physics-Informed Neural Networks for Parametric Modeling of Permanent Magnet Synchronous Machines

  IEEE Transactions on Energy Conversion · 2025-08-11 · 3 citations

  article

  The objective of this paper is to develop a physics-informed machine learning methodology for parametric modeling of permanent magnet synchronous machines (PMSMs). A deep neural network is trained to compute the magnetic field as a function of spatial coordinates and machine parameters, while enforcing physical properties such as Dirichlet boundary conditions and periodicities. Leveraging a DeepONet architecture, the network is trained in a data-free fashion by minimizing a physics-informed functional using a mesh-based coenergy evaluation. The methodology is demonstrated on a 15-dimensional PMSM problem, with model accuracy validated by comparing predictions with finite element analysis (FEA) results, focusing on coenergy, average torque, and total core loss. Computational cost is also assessed relative to FEA.

  PublisherDOI

• Full-Scale Thermal and Mechanical Testing of Pavement With Embedded High-Power Dynamic Wireless Power Transfer Coil

  IEEE Transactions on Transportation Electrification · 2025-01-15 · 5 citations

  article

  This article describes an experimental setup for testing the thermal and mechanical performance of pavement that includes transmitter (tx) coils designed for high-power dynamic wireless power transfer (WPT). Two types of pavement test sections (rigid and flexible) are constructed within an accelerated pavement testing (APT) facility. Traffic simulation is carried out to examine the performance of the unit under realistic load conditions. The experimental results show a modest temperature rise due to the Joule loss of the coil. Strain measurements taken at various locations in the pavement are also reported, showing behavior consistent with that expected in the materials used.

  PublisherDOI

• Optimal power flow with synchronous generator capability curves using the branch flow model

  International Journal of Electrical Power & Energy Systems · 2025-05-14

  articleOpen accessSenior author

  A method for incorporating synchronous generator capability curves (GCC) into the constraints of the optimal power flow (OPF) problem is proposed. The steady-state equivalent circuit of the synchronous machine in qd variables is added as a branch in the branch flow model (BFM) of the power system equations. Second-order cone programming is used to formulate a computationally efficient, convex relaxation of the BFM-based OPF with the GCC constraints. This enables the inclusion of nonlinear GCC equations, which vary with terminal voltage magnitude and include the impact of rotor saliency and stator resistance, in the OPF. Numerical verification and case studies are provided. • Detailed synchronous generator capability curves are incorporated in OPF problem. • The branch flow model is used to formulate an SOCP relaxation of OPF with GCCs. • The impact of varying terminal voltage magnitude on the shape of the GCC is modeled. • Effects of rotor saliency and stator resistance in field current limit are modeled. • Limits imposed by UEL controls in the underexcited region are captured.

  PublisherDOI

• Receiver-Side Power Control of a 200-kW Three-Phase DWPT System for Heavy-Duty Vehicles

  2025-06-03

  article

  A 200-kW DC-DC converter has been designed to enable receiver-side power control in a heavy-duty electric vehicle equipped with wireless power transfer technology. The converter employs an interleaved, non-inverting cascaded buck-boost converter topology to meet high power demands and ensure optimal performance during transmitter pad-to-pad transitions and vehicle misalignment. Power delivery is managed through a cascaded control strategy combining an inner inductor-current controller with an outer output-current controller. This is integrated with a Class-8 electric vehicle to be tested on an electrified roadway test bed currently under development along US-52/231 in Indiana, USA. Comprehensive simulation and hardware results are provided to validate its operation.

  PublisherDOI

• A Practical Implementation for Field-Based Computation of Core Loss in Permanent Magnet Synchronous Machines

  2025-05-18 · 2 citations

  article

  A practical methodology is presented for computing core loss in permanent magnet synchronous machines (PMSMs) using magnetic field data from finite element analysis (FEA). By exploiting geometric symmetry and field periodicity, the number of required FEA simulations is reduced, enabling reconstruction of the flux-density field for a complete electrical cycle from limited data. The Fourier analysis and the spectral derivative of the field then provide a systematic evaluation of eddy current loss and excess loss. Hysteresis loss is calculated using the wipe-out rule to identify major and minor loops, whose areas are then approximated by those of equivalent elliptical loops. Numerical results are presented for core loss computations in a PMSM.

  PublisherDOI

Recent grants

• CAREER: Sculpting Electric Machines for Unidirectional Motion

  NSF · $166k · 2013–2016

Frequent coauthors

• Thomas Siegert

  University of West Florida

  147 shared

• Karen Hawkins

  Xi'an Jiaotong University

  147 shared

• Cecelia Jankowski

  Institute of Electrical and Electronics Engineers

  147 shared

• Nikos Hatziargyriou

  National Technical University of Athens

  147 shared

• Kevin Lisankie

  Institute of Electrical and Electronics Engineers

  147 shared

• Sophia Muirhead

  Institute of Electrical and Electronics Engineers

  147 shared

• Saifur Rahman

  Los Alamitos Medical Center

  147 shared

• Konstantinos Karachalios

  Institute of Electrical and Electronics Engineers

  147 shared

Education

• PhD, Electrical and Computer Engineering

  Purdue University

  2003

• Diploma, Electrical and Computer Engineering

  National Technical University of Athens

  1999