Pietro Cornelio’s Post

Discover the homopolar generator, also known as Faraday's Disc. Michael Faraday's 1831 invention laid the groundwork for modern electrical generation. With its unassuming design, Faraday's disc marks a pivotal chapter in the history of energy, heralding a new age in electricity. This reminds us that often, great leaps begin with simple ideas. #FaradaysDisc #HistoryOfEnergy #ElectricalEngineering #InnovationInScience #MichaelFaraday #ElectricalGeneration #ScienceHistory #PhysicsFun #TechThrowback #InventorsAndInventions #TurboGen #Generator #STCTS

I'm delighted to announce that our latest paper, titled "Analysis and Design of Droop-Controlled Grid-Forming Inverters Using Novel WD Agg Approach," has been accepted for publication in the esteemed journal of IEEE Transactions on Industrial Electronics (TIE). You can access the paper via the following URL: https://lnkd.in/gV6jSmRj Abstract: This article proposes the weighted dynamic aggregated (WD agg) model of large-scale systems consisting of n grid-forming inverters in white-box islanded microgrids. The proposed WD agg approach models the microgrid's n grid-forming inverters, which have a similar control structure, by a single equivalent inverter and a controller that has a similar order and structure to the inverters in the microgrid. The parameters of the equivalent inverter and controller are obtained by considering the contribution of each state to the corresponding equivalent state. Compared with the existing models, while the complexity and computational burden of the studied system is reduced, the proposed WD agg model can provide an accurate single equivalent unit for a microgrid consisting of a large number of grid-forming inverters with different sizes, operating points, and parameters. It is shown for various cases that the proposed WD agg model can be used in the steady-state, transient, and stability analyses with superior accuracy. The model can also be used to design the controller and inverters' parameters to ensure a desirable performance of the microgrid. The proposed WD agg model is evaluated by time-domain simulations and experimental implementation of four inverters connected to a load and CIGRE MV/LV benchmark for renewable energies for various case studies. We are excited to contribute to the field of industrial electronics and advance the understanding of grid-forming inverters. Thank you to all our collaborators and supporters for making this achievement possible, especially University of Alberta’s Future Energy Systems research initiative. Please feel free to access the full paper to explore our findings in detail.

Externally-gapped line arrester technology is considered by many to be the most effective and suitable line surge arrester design to meet the requirements of overhead lines. Unfortunately, application of EGLAs is still not fully understood and adopted by the electricity supply industry. By Florent Giraudet #highvoltage #electricalengineering #powersystems #energyindustry #INMR #electricity https://lnkd.in/gJdke2Q5

New in Device, Krupenkin & co-workers report an energy harvesting method using reverse electrowetting, read free here: https://lnkd.in/g3imDYW9 Batteries are a common solution for powering mobile devices, but they are limited by their dependence on external power sources. An alternative to our reliance on batteries is using an energy-harvesting approach. Several mechanical energy harvesting techniques like piezoelectric and electrostatic can be utilized to capture mechanical energy, but these techniques tend to produce high-voltage and low-current output, which is not easy to use. Reverse electrowetting (REWOD) tends to overcome many limitations and can be used to harvest mechanical energy from a wide range of sources. However, the existing design of REWOD requires external bias voltage, which leads to dependence on an external voltage source. This work demonstrates a method that combines REWOD and electromagnetic induction for mechanical-to-electrical energy conversion and eliminates the need for external bias voltage. The proposed approach can be potentially used to power a broad variety of electronic devices requiring power at mW scale.

🌞 🌻 "Once you got a solar panel on a roof, energy is free. Once we convert our entire electricity grid to green and renewable energy, cost of living goes down." - Elizabeth May An overview of PMU-based Electrical Power Systems modelling for Power Quality enhancement Power quality (PQ) is a term that refers to the characteristics of the voltage and current waveforms in an electrical power system. PQ affects the performance, reliability and efficiency of various electrical devices and equipment connected to the power system. PQ problems can include voltage sags, swells, harmonics, flicker, interruptions, transients and unbalance. These problems can cause equipment malfunction, damage, overheating, increased losses and reduced lifetime. One of the ways to improve PQ is to use phasor measurement units (PMUs), which are devices that measure the voltage and current phasors at different locations in the power system. PMUs can provide high-resolution, synchronized and accurate data that can be used for monitoring, analysis, control and protection of the power system. PMUs can also enable the integration of distributed energy resources (DERs), such as renewable generation, energy storage and demand response, which can offer additional benefits for PQ enhancement. However, to fully exploit the potential of PMUs for PQ improvement, it is necessary to develop appropriate models of the electrical power system that can capture the dynamic behaviour and interactions of the various components and devices. These models should be able to represent the physical phenomena that affect PQ, such as faults, switching events, load variations, harmonics and interharmonics. Moreover, these models should be able to incorporate the PMU measurements and the control actions based on them. This paper provides an overview of the existing methods and techniques for modelling electrical power systems with PMUs for PQ enhancement. It reviews the main types of PMUs, their applications and challenges for PQ improvement. It also discusses the different approaches for modelling power system components and devices with PMUs, such as transmission lines, transformers, generators, loads, DERs and power electronic converters. Furthermore, it presents some examples of power system models with PMUs for PQ analysis and control. Finally, it identifies some open issues and future research directions in this field. #electricpower #pmu #smartgrids #powerquality 🙏 Nicolae Anton; Constantin Bulac; Mihai Sănduleac; Eda-Elif Gemil; Bogdan Dobrin; Vlăduț-Andrei Ion All Authors https://lnkd.in/gTAxW_93

https://lnkd.in/gsNNWZGg What if? "...Room-temperature superconductivity is important because it has the potential to revolutionize multiple aspects of science and technology. One of the most significant advantages of room-temperature superconductors is the unprecedented energy efficiency they offer. Traditional superconductors require extremely low temperatures to function, making their practical applications limited and energy-intensive. However, with room-temperature superconductors, power transmission and distribution systems experience minimal energy losses due to virtually zero electrical resistance..."