Join us online for COMSOL Day: Power & Energy in Zürich for a full day of energy-related modeling and virtual interaction with the simulation experts in the electrical power industry.
Learn how COMSOL Multiphysics® can accelerate research and development of high voltage equipment, smart grids and transformers.
You will get an overview of the electromagnetic modeling capabilities in the COMSOL® software and will see how you can streamline the simulation workflow by building and deploying applications.
Get together with peers to know the new industry developments, engage in product demonstrations, and ask questions to COMSOL technical staff. There will be interactive Tech Cafés run in parallel with the main sessions.
COMSOL Day: Power & Energy is free of charge. Feel free to invite your colleagues!
All attendees will receive a free two-week trial licence of the COMSOL Multiphysics® software for use both during and after the event.
Please join us 10 minutes before the presentation starts to settle in and make sure that your audio and visual capabilities are working.
To start, we will briefly discuss the format of the day and go over the logistics.
The design of cables and busbars can benefit largely from multiphysics simulation. Get an overview of the capabilities for modeling direct- and alternating-current systems and their resistive, capacitive, inductive, and electrothermal behavior.
Simulation apps enable you to expand your modeling and give more control to your colleagues who require simulations for their designs and processes. You can create user-specific modeling environments that are best suited to their simulation needs while also being intuitive enough for them to use, even if they are not modeling experts. During this Tech Café, we will introduce the application building and deployment tools of COMSOL and discuss specific examples from the power & energy sector.
Digitalization in the Cable Business: Toward Self-Monitoring Cable Systems in the Field Based on Digital Twins Backed by COMSOL® Simulations
At Leoni, we are not only working toward even more reliable, performant cables by simulating their electric, magnetic, mechanical, and thermal properties but also bringing our customer applications to our design board. Based, among others, on multiphysics simulations, we prepare digital twins of our data and energy cables, which can then be used in all phases of our customer’s application life cycle, from finding the right cable for a given application (for example, anticipating different environmental conditions or use cases) during the system design phase to condition monitoring and even turnkey predictive maintenance solutions. We will briefly present cable simulations in different physical domains from different applications, as well as their validation. Finally, we will discuss an exemplary development and the advantages of the digital twin of an actively cooled high-performance charging cable for electric vehicles.
Modeling and Design of Stepper Motors: Challenges and Opportunities
Stepper motors (SM) are a particular class of synchronous electrical machines which differ significantly, in terms of both construction and final use, from their more famous siblings like DC and Brushless motors. The step-by-step motion proper of these devices is typically achieved by optimizing motor geometry in order to modulate cogging torque and define stable equilibrium positions, or “steps”, along the rotor revolution. However, as complexity increases, a purely analytical modeling approach becomes more challenging, impractical or even impossible. Moreover, due to the high number of magnetic pole pairs typically implemented in SM (12 or more), high frequency effects (e.g. eddy currents) are triggered at relatively low operational speeds, making them basically non negligible even in an early design phase. In this context, it becomes evident the capital importance of a Finite Elements based approach for a comprehensive description of SM and their subsequent optimization. In this sense, COMSOL Multiphysics has allowed us to investigate and identify nontrivial issues affecting motor performances, and overcome them in an effective, targeted manner.
Simulations can provide important insight into the context of EMC and EMI testing. Learn about best practices for simulating the shielding of static and dynamic electric and magnetic fields, including the use of nonlinear materials, thin layers, and the modeling of charge relaxation effects.
Inductive heating is a typically unwanted effect in all HVAC appliances. Multiphysics modeling empowers you to capture electrothermal heating processes caused by eddy currents accurately. In this Tech Café, we will discuss which specific concepts are available in COMSOL Multiphysics® to accurately account for bulk and surface EM losses in different time scales and couple them to heat transfer simulations.
The quality of transformers is characterized by effects covering a wide range of physics: electromagnetic efficiency, electric and magnetic losses, stray fields, heating, and even noise emission. Discover how multiphysics simulation can help you predict the performance of transformers.
Generating a mesh that is both fine enough to capture the physical phenomenon and give accurate results and computationally efficient is a compromise and requires different meshing techniques. During this Tech Café, we will discuss how best to generate meshes for typical situations encountered in low-frequency EM models, including boundary layer meshes, infinite elements, rotating domains, and thin layers.
A Multiphysics Approach for Thermal Management of High-Voltage Equipment
In recent times, more and more HVDC converter stations are designed to be installed indoors. This has increased the demand on HVAC/climate systems to be rated efficiently and economically. A poorly designed HVAC can trip the whole station, which may lead to financial loss and hamper daily life due to our heavy dependence on electricity. At Hitachi/ABB, we use CFD simulations to calculate and optimize temperature and velocity distributions for the indoor airflows of HV equipment. In addition to other tools, we use COMSOL Multiphysics® to study natural and forced convection in order to design an optimized ventilation system. These simulations are very time and memory intensive since the majority of these flows are convectively driven, which can give rise to numerical instability. We use the CFD Module and have found it to be a reliable design tool. The simulation results are extensively benchmarked with measurements onsite. A CFD application for transformer enclosure has also been developed that is used to compute initial design during tender stage for cost assessment.
Designing Compact Energy Distribution Products with Multiphysics Modeling
Traditional power boxes (or feeder pillars) are mounted in the street and control the electrical supply to dwellings within a neighborhood. As smart cities increasingly prioritize aesthetics and continue to place a high value on urban living, there is a need for less conspicuous and compact power boxes. The size of the traditional design holds the hardware necessary to reduce the high power of the long-distance power line to a power suitable for distribution to homes, businesses, and small industries. The worthy goal of reducing the size of the power boxes comes with the additional challenge of routing power in a lesser footprint while considering resistance, structural integrity, and Lorentz forces — not an insignificant undertaking. A multiphysics approach using COMSOL Multiphysics® has been undertaken to design such innovative compact systems, analyzing this at a subcomponent level, to tackle the engineering challenges that accompany the creation of this radical new design. Among the various proposed configurations of feeder pillars, a compact vertical feeder pillar is modeled and simulated as per the International Electrotechnical Commission (IEC) standard test requirement and evaluated in terms of accuracy and ease of use. The simulation models are designed to evaluate the short circuit withstanding capability of the FPB system and understand electromechanical integrity under full loading conditions, which has helped to redesign the FPB system configuration with the lowest footprint possible. The models so developed are validated experimentally with an in-house developed prototype and benchmarked extensively for other variants of power boxes.
Designing power electromagnetics systems can often involve optimization tasks such as realizing predefined field strengths or gradients, particularly regions of space, minimizing power losses, or maximizing performance. In this session, we discuss how to optimize physical and geometrical parameters of your EM systems using the Optimization Module.
The basic requirement for the design of electrical machines like motors, generators, and brakes is a fundamental understanding of EM forces and torque. In this session, we discuss and compare the pros and cons of several methods of calculation.
Bring your questions and feedback.
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