@article{chenevert_arora_pantic_2022, title={Evaluation of Low Power Wi-Fi Modules in Emulated Ocean Environments}, ISBN={["978-1-6654-6809-1"]}, ISSN={["0197-7385"]}, DOI={10.1109/OCEANS47191.2022.9977125}, abstractNote={The major problem acoustic underwater communication faces is the low data rate due to low signal frequency. By contrast, the Wi-Fi communication protocol offers high throughput, but limited operating range due to the attenuation effect of the sea and ocean medium. However, short-range near-field underwater wireless power transfer systems offer an environment where Wi-Fi communication can be effectively integrated to collect data and deliver instructions to sensors in underwater sensor networks. In this paper, low-power, low-cost off-the-shelf Wi-Fi modules are explored experimentally for four selected parameters for the different distances between units and different water salinities. The results reveal a shorter operating range and stronger dependence on water salinity than reported so far for high-end Wi-Fi modules.}, journal={2022 OCEANS HAMPTON ROADS}, author={Chenevert, Gabriel and Arora, Abhilash and Pantic, Zeljko}, year={2022} }
 @article{ahluwalia_chenevert_pratik_pantic_2022, title={System for Wireless Charging of Battery-Powered Underwater Sensor Networks}, ISBN={["978-1-6654-6809-1"]}, ISSN={["0197-7385"]}, DOI={10.1109/OCEANS47191.2022.9977272}, abstractNote={Battery-powered Underwater Sensor Networks (USNs) can have limited durability owing to their battery life. This paper proposes an energy delivery system for wireless recharging of USNs using a Remotely Operated Vehicle (ROV), which allows us to extend their lifespans and reduce waste. The wireless charging system’s efficiency is maximized using 3-D Finite Element Analysis (FEA) and an analytical loss model to design and optimize the magnetic coupler. We evaluate the proposed method using a prototype and provide experimental results for coils submerged in water at different salinity levels. These results are also compared with coils placed in the air. A detailed analysis of system operation with changes in the surrounding medium is presented. When operated at an output power of 50 W and an output voltage of 15.6 V, the developed prototype works at a best-case efficiency of 90% with coils submerged in a seawater medium.}, journal={2022 OCEANS HAMPTON ROADS}, author={Ahluwalia, Urvi and Chenevert, Gabriel and Pratik, Ujjwal and Pantic, Zeljko}, year={2022} }
 @article{pratik_abdelraziq_ahluwalia_akhmetov_chenevert_pantic_2021, title={Design of a Dual-Loop Controller with Two Voltage- Dependent Current Compensators for an LLC-Based Charger}, ISSN={["1093-5142"]}, DOI={10.1109/COMPEL52922.2021.9645959}, abstractNote={A two-stage charger (PFC+LLC) is developed for Power Mobility Device (PMD) charging applications (i.e., power wheelchairs). The LLC topology is selected due to its ability to maintain ZVS operation over a wide range of load variations. This paper discusses the challenges of designing a dual-loop controller for an LLC-based charger with a wide operation region. It proposes modifying the inner current loop to maintain stable operation over a wide input and output range—the proposed internal loop control switches intelligently between two current controllers based on the output voltage level. A 300-W prototype is designed and tested with a resistive load. Moreover, simulation and experimental results are compared to validate the robustness and stability of the proposed controller.}, journal={2021 IEEE 22ND WORKSHOP ON CONTROL AND MODELLING OF POWER ELECTRONICS (COMPEL)}, author={Pratik, Ujjwal and Abdelraziq, Muhammad and Ahluwalia, Urvi and Akhmetov, Zhansen and Chenevert, Gabriel and Pantic, Zeljko}, year={2021} }