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#Review 📜 A Review of Recent Developments in Permanent Magnet Eddy Current Couplers Technology by Jiaxing Wang, Dazhi Wang, Sihan Wang, Tailai Tong, Lisong Sun, Wenhui Li, Deshan Kong, Zhong Hua and Guofeng Sun 🔗 https://lnkd.in/gZg4t226 MDPI; Northeastern University #PMECCs #eddycurrentdamper #eddycurrentbraking #analyticalanalysis #Abstract Permanent magnet eddy current couplers (PMECCs) have the characteristics of contactless torque transmission, removal of torque ripple, smooth dynamic process, and adjustable speed, and can be used as couplings, dampers, brakes, and speed governors. Their applications in industry, vehicles, and energy fields are gradually expanding. At the same time, the requirements for the torque density and dynamic performance of PMECCs are increasing. Therefore, a large amount of research work has focused on the fast and accurate modeling, design, and optimization of PMECCs. This paper provides a survey on the development of PMECCs technology. The main topics include the structure and classification of PMECCs, modeling methods, loss and heat transfer analysis modeling, and optimization design. In addition, this paper shows the future trends of PMECCs research. All the highlighted insights and suggestions of this review will hopefully lead to increasing efforts toward the model’s construction and the optimal design of PMECCs for future applications.

💡 Question of the Day: Electrical Resistance Challenge! 💡 Can you calculate the equivalent resistance when resistors are connected in parallel? Test your skills with these scenarios: (a) Calculate the equivalent resistance for 1 Ω and 10^6 Ω connected in parallel. (b) What is the equivalent resistance for 1 Ω, 10^3 Ω, and 10^6 Ω when connected in parallel? Put your knowledge to the test and comment your answers below! Don't forget to visit www.qmaths.com for more brain-teasing questions and solutions. Let's spark some electrical genius today! ⚡💡 #QOTD #ElectricalEngineering #ParallelCircuits #QMaths

#powersystemstrength in IBR-rich electrical grids Here is Page 1 of Chapter 9 of the IET book, recently published: Power System Strength - Evaluation methods, best practice, case studies, and applications #energysystemstransition #cleanenergyfuture

#powersystemstrength in IBR-rich electrical grids Here is Page 1 of Chapter 8 of the IET book, recently published: Power System Strength - Evaluation methods, best practice, case studies, and applications #energysystemstransition #cleanenergyfuture

#powersystemstrength in IBR-rich electrical grids Here is Page 1 of Chapter 10 of the IET book, recently published: Power System Strength - Evaluation methods, best practice, case studies, and applications #energysystemstransition #cleanenergyfuture

#powersystemstrength in IBR-rich electrical grids Here is Page 1 of Chapter 4 of the IET book, recently published: Power System Strength - Evaluation methods, best practice, case studies, and applications #energysystemstransition #cleanenergyfuture

#powersystemstrength in IBR-rich electrical grids Here is Page 1 of Chapter 2 of the IET book, recently published: Power System Strength - Evaluation methods, best practice, case studies, and applications #energysystemstransition #cleanenergyfuture

CIGRE has just published Technical Brochure 926 “Methods for Specification of Functional Requirements of Protection, Automation, and Control”, available at eCIGRE. During the last years I had the pleasure of convening the working group that produced this brochure, when I met exceptional #CIGRE members that contributed to this objective. My sincere thanks to all. The brochure introduces a Domain-Specific Language (DSL) for the formal specification of functional #requirements of electrical power systems. It covers the lexicon, syntax, semantics, and pragmatics of a language that is agnostic to technology and proprietary solutions, aiming the needs of #utilities , #academics , #manufacturers , and #consultants. The need for this formalization was supported by a survey among utility stakeholders, published by a CIGRE Science & Engineering Journal as a report (“A Review of International Industry Practices for Specification of Functional Requirements of #Protection, Automation and Control”), with examples of constructs and Use Cases. It mainly shows its insertion in the #engineering cycle during the #requirement #specification of a solution to be deployed using #IEC61850 and other implementation #standards.

#powersystemstrength in IBR-rich electrical grids Here is Page 1 of Chapter 7of the IET book, recently published: Power System Strength - Evaluation methods, best practice, case studies, and applications #energysystemstransition #cleanenergyfuture

NERC took an important step in updating and improving resource adequacy models to better inform decision making and improve reliability and resource adequacy outcomes. The importance of common cause failures, particularly those due to weather, is well known in the academic literature and is taught in introductory reliability courses to undergraduates. The limitations of the LOLP/LOLE indices have also been well established for decades. Billington, R., and R. N. Allan. "Reliability evaluation of power systems." (1984). Billinton, Roy, and Ronald Norman Allan. Reliability evaluation of engineering systems. Vol. 792. New York: Plenum press, 1992. Felder, Frank A. "“An Island of Technicality in a Sea of Discretion”: A Critique of Existing Electric Power Systems Reliability Analysis and Policy." The Electricity Journal 14.3 (2001): 21-31. Felder, Frank A. "Incorporating Resource Dynamics to Determine Generation Adequacy Levels in Restructured Bulk Power Systems." KIEE International Transactions on Power Engineering 4.2 (2004): 100-105. Murphy, Sinnott, Fallaw Sowell, and Jay Apt. "A time-dependent model of generator failures and recoveries captures correlated events and quantifies temperature dependence." Applied energy 253 (2019): 113513. Enhancing resource adequacy models along multiple dimensions to incorporate more causes of power outages and blackouts, economic and social costs, uncertainty, economic incentives, and account for resiliency is doable, practical and useful. Felder, Frank A., and Marie Petitet. "Extending the reliability framework for electric power systems to include resiliency and adaptability." The Electricity Journal 35.8 (2022): 107186. Petitet, Marie, Burcin Unel, and Frank A. Felder. "Making Electricity Capacity Markets Resilient to Extreme Weather Events." Economics of Energy & Environmental Policy 12.2 (2023). Felder, Frank A. and Petitet, Marie, An Emerging Framework for the Probabilistic Cost-Benefit Analysis of the Reliability, Resiliency, and Adaptability of Electric Power Systems (June 15, 2024). Available at SSRN: https://lnkd.in/dBvezhuN or https://lnkd.in/dXQpbd5B