Riccardo Tinivella

📣 Engineers: Learn how to quickly develop and adapt motor control algorithms with the reference examples from Motor Control Blockset. #Electrification #MATLAB https://spr.ly/6046oIzt8

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Decoding Lithium-Ion Battery Behavior through Equivalent Circuit Models When it comes to optimizing lithium-ion battery performance, understanding their internal dynamics is key. Equivalent circuit models are powerful tools that help us simulate and predict how a battery responds under different conditions, guiding the design of more efficient and reliable battery systems. Several models are commonly used: 1. Open Circuit Voltage (OCV) Model: This simplest model assumes the battery voltage remains constant, providing a basic starting point for understanding battery behavior. It’s a great way to grasp the fundamentals, though it doesn't capture dynamic responses. 2. State of Charge (SOC) Model: SOC models track the battery’s charge level, showing how voltage changes with charging and discharging. This is crucial for applications where knowing the exact charge level is essential, such as in electric vehicles. 3. Internal Resistance (Rint) Model: Here, we account for the battery’s internal resistance, which affects voltage drop and power loss. This model is particularly useful for low-power applications, though more advanced scenarios require additional detail. 4. Thevenin Model: By incorporating parallel resistor-capacitor circuits, the Thevenin model offers a more sophisticated approximation of real-world battery behavior, including how the battery voltage changes dynamically with current flow. 5. Randles Model: This model dives into the electrochemical processes inside the battery, using elements like charge-transfer resistance and double-layer capacitance to simulate more complex interactions. It’s a preferred choice for understanding how batteries perform under varying load conditions. Equivalent circuit models are more than just theoretical constructs—they are practical tools that engineers use to enhance battery performance, predict lifespan, and improve safety. By leveraging these models, we can push the boundaries of what's possible with lithium-ion batteries, from consumer electronics to electric vehicles. #BatteryTechnology #LithiumIon #ElectricVehicles #EnergyStorage #Engineering #Innovation #ev #lithium

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Tech-Tuesday Webinars Continue with: Impact of Harsh Environments and Ionic Contamination on Circuit Assemblies There is well documented historical proof that post-reflow circuit assemblies, when subjected to harsh environments, are particularly vulnerable to failure mechanisms that can drastically reduce their performance and longevity. Modern electronic assemblies are far more susceptible to this phenomenon. Among the critical issues affecting these assemblies is ionic contamination, which can lead to a series of deleterious processes, including electrochemical migration (ECM). This webinar explores the relationship between harsh environmental conditions, ionic contamination, and the resulting electrochemical effects on circuit assemblies. Webinar Length: 60 Minutes Cost: This non-commercial webinar is free for all attendees Register Here: https://lnkd.in/evRbrYms #techtuesday #webinar #reliabilitymatters #reliability

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Major capacitor breakthrough for microelectronics... Scientists at Lawrence Berkeley National Laboratory and UC Berkeley have created "microcapacitors" that allow integrating energy storage directly onto microchips, minimizing energy losses that occur when power is transferred between different components. The idea isn't new, but current #technology struggles to meet the requirements of storing sufficient energy in a compact space while delivering it rapidly. Made from engineered thin films of hafnium oxide and zirconium oxide, the capacitors employ materials and fabrication techniques commonly used in chip manufacturing. However, their ability to store significantly more energy than ordinary capacitors is down to the use of negative capacitance materials. Capacitors store energy in an electric field established between two metallic plates separated by a dielectric material (non-metallic substance). They deliver power quickly and have longer lifespans than batteries, which use electrochemical reactions. These benefits come at the cost of significantly lower energy densities, which is exacerbated when shrinking them down to microcapacitor sizes for on-chip energy storage. The researchers overcame this by engineering thin films of HfO2-ZrO2 to achieve a negative capacitance effect. By tuning the composition, they were able to get the material to be easily polarized by even a small electric field. To scale up the energy storage capability of the films, the team placed atomically thin layers of aluminum oxide every few layers of HfO2-ZrO2. This allowed them to grow the films up to 100 nm thick while retaining the desired properties. These films were integrated into 3-D microcapacitor structures, achieving record-breaking properties: nine times higher energy density and 170 times higher power density compared to the best electrostatic capacitors. The technology could help meet the growing demand for miniaturized energy storage in microdevices such as #IoT, edge computing, and AI processors… Daily #electronics from Asia insights – follow me, Keesjan, and never miss a post by ringing my 🔔. #innovation

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Can Transformer Failures Be Avoided? Let’s Talk Thermal Intelligence Transformer failures can disrupt operations, but they’re often preventable. The key? Understanding and monitoring your transformer’s thermal behavior. Save the date: December 5th at 10 AM EST / 4 PM CET for our must-attend webinar, "Thermal Intelligence: Advanced Thermal Monitoring Techniques for Power Transformers." This engaging session, led by Alan Ross, features two industry veterans with remarkable expertise: 🌟 Roger Ely, P.E. With 40 years at Georgia Power Company, Roger has tackled substation asset management, distribution engineering, and reliability head-on. As a Substation Support Senior Engineer, he’s now focused on condition-based maintenance for Transmission Maintenance Centers. Roger’s experience is grounded in hands-on engineering and leadership within T&D systems. 🌟 Brad Bowness From guiding Hydro One’s technology and operations as CIO to leading transmission, distribution, and stations divisions, Brad’s 25+ years of experience have shaped him into a powerhouse of innovation and strategy. Now at Systems With Intelligence™ Inc., he’s at the forefront of modernizing transformer monitoring systems. Expect actionable insights, real-world applications, and strategies that could transform how you manage power transformers. Register today for free and join us to explore smarter solutions for a more reliable grid: https://lnkd.in/dyTwGAwa

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Finally, we get another RF-centric design for the 1-minute design review series, this time from Christoph Schmied. It's a GNSS design and it's his first 4 layer #pcb, overall it's a pretty good job. But one tricky thing is applying the clearance rules to coplanar lines in Altium Designer. If your coplanar clearance differs from your default clearance, you will need to create a separate trace-to-polygon rule that applies only to your RF net. If you're not sure how to do this, leave a comment and let me know if I should make a video about it! Want to have your design reviewed on the Altium® Academy channel? Send me a message with your design files or your manufacturing files. https://lnkd.in/gXkWBPXg #pcbdesign #electronicsengineering #radiofrequency

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Magnetic Materials That Could Replace Rare Earths in EV Motors: A typical rare earth motor will use 1-2kg of magnets, for a ferrite motor, this figure would likely double or even triple, the performance of the motor would be very challenging to compare to rare earth motors, resulting in a larger or lower power motor. #electricmotors #electricandhybridvehicles  https://lnkd.in/g3RUWUGR

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Check out this 4-part on-demand webinar series that go over best practices to overcome challenges with large scale modeling. * Simulink Components & Interfaces * MATLAB Projects: From Dependency Analysis to Batch Processing * Managing Model Parametric Data * Speeding up Simulink Simulations https://spr.ly/6047cSebT

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What determines the service life of a power battery? The battery management system (BMS) is the core subsystem in the battery system that intelligently monitors battery charging and discharging, temperature protection, energy balancing, and information transmission. It is the "smart brain" in the battery. A complete battery energy storage system, commonly referred to as a BESS, can be strategically assembled from dozens, hundreds, or even thousands of lithium-ion batteries. These systems have a rated voltage of up to 1000V and a battery pack supply current range of up to 300A or more. Any mismanagement of high-voltage battery packs can trigger a catastrophic disaster that threatens life. Therefore, the BMS is critical to ensure safe operation. (1) Life and reliability Battery pack protection management, electrical and thermal, ensures that all batteries are used within the declared SOA requirements. This delicate supervision ensures safe use of the battery and rapid charge and discharge cycles, and inevitably produces a stable system with the potential to provide many years of reliable service. (2) Performance and range BMS battery pack capacity management, in which inter-cell balancing is employed to equalize the SOC of adjacent cells on a battery pack assembly, allows optimal battery capacity to be achieved. Without this BMS functionality to account for changes in self-discharge, charge/discharge cycles, temperature effects, and general aging, the battery pack may eventually become useless. (3) Diagnostics, data collection, and external communications Supervision tasks include continuous monitoring of all battery cells, where data logging can itself be used for diagnostics, but is typically used for computational tasks to predict the SOC of all cells in the assembly. This information is used in balancing algorithms, but can be forwarded to external devices and displays to indicate available resident energy, estimate expected range or range/lifetime based on current usage, and provide the health status of the battery pack. (4) Cost and warranty reduction The introduction of a BMS into a BESS increases costs, and battery packs are expensive and potentially dangerous. The more complex the system, the higher the safety requirements, and therefore the more BMS supervision is required. However, the protection and preventive maintenance provided by the BMS in terms of functional safety, life and reliability, performance and range, diagnostics, etc., guarantee that it will reduce overall costs, including those related to warranty. Are you looking for a trusted lithium battery or BESS supplier? Please send your requirements to [email protected] and our professional team will provide you with the best battery solution. #BESS #energystorage #lithiumionbatteries #solarenergy #evcharging #photovoltaics #renewableenergy #microgrids #greenenergy #Nowtech

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Modern #energy systems are facing a growing challenge with increased complexity due to the distributed power supply and energy load variability. The traditional #autonomous policies are struggling with this changing topology. But, there is a proposed framework that can help address this issue. The framework combines a #Convolutional Graphics Network with #DRL and #GraphSAGE. This is a promising solution to the problems faced by energy systems today.

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🔋 **Register for IEEE On-Demand Webinar: Modeling and Simulation of Faults in a Battery System** 🔌 Dive deep into the world of battery system reliability and safety! Join our on-demand webinar to master the art of modeling and simulating faults in battery systems. This session is a must-attend for anyone involved in battery technology, from researchers to engineers. **What You'll Learn:** - How to inject and simulate 3 different types of faults at the cell level: additional resistance fault, internal short-circuit fault, and exothermic reactions. - The methodology to characterize cell thermal runaway using a simple first-order kinetic model. - Techniques to simulate faults in a battery module effectively. - Strategies to conduct systematic fault analysis of a battery management system. Don't miss this opportunity to enhance your skills and knowledge in battery system analysis. Register now to gain access to invaluable insights and methodologies! 👉 **Join us and revolutionize the way you approach battery system safety and reliability!** #IEEE #Webinar #BatterySystem #FaultModeling #Simulation #BatterySafety #BatteryTechnology #Engineering #BatteryManagement #ThermalRunaway #RenewableEnergy #TechInnovation

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AI gives noise-canceling headphones superpowers… A new headphone prototype (below) from researchers at the University of Washington uses #artificialintelligence to selectively filter out noises and focus on specific voices, instead of just dampening ambient sounds. Most active noise-canceling headphones produce sound waves to counteract lower-frequency environmental sounds like engine drones. But they end up canceling all sound in those frequencies, even audio you might want to hear. The headphones have built-in microphones feeding audio to a neural network trained to recognize different types of sounds like barking dogs, ringing phones, etc etc. A companion app allows users to enable or disable categories, filtering noises they want to hear through the headphones. This means they can also zero in on a particular voice amid background chatter. Tap a button and the device will amplify the voice directly in front of all other sounds. Eavesdropping just got a lot more interesting. The microphones pipe audio into an AI processor that deciphers and removes unwanted sounds in real time. This is done with just an 8-millisecond delay, which should be enough to avoid latency issues. For the on-device AI processing, the current headphone rig uses an OrangePi board connected via USB rather than going through a cloud server. AI is already making its way into mainstream audio gear through algorithm-powered noise cancellation for microphones. This flips that concept on its head, using AI to augment what the wearer can hear, not just what the mic picks up. Maybe I should test it out using my mother-in-law’s voice… Daily #electronics from Asia insights – follow me, Keesjan, and never miss a post by ringing my 🔔. #technology #innovation

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Episode 155 of the Reliability Matters Podcast is now available. Ultra HDI Panel Discussion (recorded live at SMTAI). As the demand for smaller, faster, and more powerful devices grows, the need for innovative solutions in circuit design has never been greater. UHDI's represent a significant leap forward, allowing for more connections in a smaller space, pushing the boundaries of what's possible in electronic assemblies. But what exactly are UHDI's? Essentially, they refer to circuit boards with incredibly fine pitch interconnects, enabling higher functionality and complexity in much smaller form factors. This breakthrough is transforming industries like consumer electronics, aerospace, automotive, and medical devices, where space, weight, and performance are critical factors. In this episode, we’ll explore the advantages UHDI's bring to the table, from increased design flexibility and performance to better thermal management. We'll also discuss how UHDI's are set to impact the assembly process. With tighter tolerances and more intricate layouts, UHDI assemblies will require new approaches to assembly, inspection, and reliability testing. To better explain UHDI technology, we’ve put together a panel of subject matter experts. Tara Dunn, Director of Training and Education at the Surface Mount Technology Association (SMTA), will moderate a panel discussion with other subject matter experts. In addition to Tara, our other experts are Anaya Vardya CEO of American Standard Circuits, Chrys Shea from Shea Engineering Services, Michael Sivigny, owner and General Manager of CeTaQ Americas, and Oren Manor, Op-Center Core Program Business Director at Siemens Digital Industries Software. Ultra-HDI is here! And if you haven’t seen it on your assembly line yet, it’s coming, so stay tuned as we unpack the future of Ultra High Density Interconnects and what it means for the next generation of technology. #reliabilitymatters #uhdi https://lnkd.in/gZA3-RPw

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A reminder of some recent posts that you may have missed or that you may like to revisit: -Examples of multiphase motors for real EVs: https://lnkd.in/dGMAByRN -List of some previous posts about multiphase electric machine drives: https://lnkd.in/dQZkjZQq -List of most viewed posts, as of February 2024: https://lnkd.in/dxnuAchS -Video about our recent paper regarding per-phase stator resistance estimation for fault-tolerant six-phase machine drives: https://lnkd.in/dpmvidM5 -List of posts about nonsinusoidal currents for fault-tolerant n-phase drives https://lnkd.in/dd7e-gkA -New journal paper "Postfault Operation Strategy With Minimum Harmonic Injection for Cascaded H-Bridge Inverters Driving a Multiphase Motor": https://lnkd.in/dcaTSdqy -Machines 2022 Best Paper Award for our survey paper about fault tolerance in multiphase machine drives: https://lnkd.in/dEbpYvBA -Suggestion about including a table summarizing the paper contribution in the Introduction: https://lnkd.in/duEWEG3B

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🌟 Simplifying Energy Monitoring with ADE9000! 🌟 Energy monitoring is essential in industries like EV chargers, utility meters, and industrial machinery. Calculating parameters like RMS, active/reactive power, and VTHD often involves complex algorithms—but not with the ADE9000 from Analog Devices. Its integrated DSP delivers precise measurements without the hassle of custom software. Check out my latest Medium article, where I share insights from my hands-on experience with this high-performance IC. 👉 Read on Medium: https://lnkd.in/gCxQPkUG #ADE9000 #PCB #EVSE #Utility #Electrical #Monitoring

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