Oros (France)

Peer-to-peer (P2P) energy trading in photovoltaic (PV) communities presents a promising alternative to centralized models like Feed-in Tariffs and net metering by enabling local energy exchanges among prosumers and consumers. However, ensuring secure and fair energy transactions with minimal computational and energy overhead remains a challenge, particularly when leveraging blockchainbased platforms. In this study, we investigate the planning and optimization of P2P PV communities through two scenarios: one with a centralized PV producer and multiple consumers, and another with a mix of prosumers and consumers. Using simulations based on real metering data and bootstrapped load profiles, we assess system performance in terms of satisfaction rate, PV valorization, transaction volume, and fairness. Results show that MILP-based matching reduces the number of transactions by up to 31.3% while maintaining high participation and energy performance. Scenario 1 achieves up to 60.1% satisfaction and 66.3% valorization, while Scenario 2 reaches 47.3% satisfaction and 46.7% valorization. The proposed system provides a viable pathway to balance energy efficiency, fairness, and computational sustainability in local PV communities.

<div class="section abstract"><div class="htmlview paragraph">This paper presents an experimental setup dedicated to the analysis of noise and vibration due to Maxwell magnetic forces in electrical machines, a significant NVH source in hybrid and electric vehicles traction motors. Both electromagnetic excitations and structural response of the electrical machine are simplified to provide the first public benchmark of e-NVH phenomenon (electromagnetic Noise, Vibration, Harshness).</div><div class="htmlview paragraph">The paper first describes how the testbench is designed and tested in order to reduce as much as possible modelling and experimental uncertainties. A Permanent Magnet Synchronous Machine topology used in EV/HEV applications is used to illustrate tooth modulation effect and interaction between radial and tangential force-induced vibrations, and designed to generate the resonance of several stator structural modes with simplified electromagnetic loading (open-circuit case). A larger air gap allows the insertion of a fine search-coil network to measure time and space distribution of the air-gap flux density and resulting Maxwell stress harmonics. Accelerometers are placed on stator tooth tips to capture tooth bending motion, as well as on the outer yoke of the stator. Besides vibration measurements, sound pressure and sound power level measurements are carried.</div><div class="htmlview paragraph">Then, some of the key measurement results are presented including Experimental Modal Analysis, Operational Deflection Shapes, and Order Tracking Analysis, spectrograms and spatiograms, Sound Pressure Level and Sound Power Level measurements. The origin of the different NVH harmonics are analyzed and their physical origin is detailed.</div><div class="htmlview paragraph">All the benchmark data is available in open access and can be used to compare different multiphysic simulation strategies of e-NVH in terms of accuracy and computing time, such as analytic, semi-analytic, numerical and hybrid methods using during electromagnetic, structural mechanics and acoustic calculations. The benchmark will be used in further work to study the most common noise mitigation strategies used in EV/HEV electric motors such as skewing, notching, pole and slot shaping, and harmonic current injection.</div></div>