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July 5, 2017
The Induction Machine (IM) is the most widely used type of electrical machine. By some estimates it accounts for 90% of all small size motors (10 – 750W) and 60 -70% of medium size motors (0.75 – 375 kW). This is mainly due to their reliability, low cost and wide range of torque / speed [...]
May 19, 2017
In this blog I will take a look at the design of linear machines, where advanced material models are being used in order to investigate the effects of hysteresis on the machine characteristic. Linear machines are electrical motors or generators which transform mechanical energy into electrical energy and vice versa, through the use of linear [...]
May 16, 2017
Opera is a suite of multi-physics analysis programs that includes electromagnetics, stress and thermal analysis. To highlight the main points that make it suitable for industrial designs: Opera includes an easy-to-use 3D Modeller, allowing models to be created or imported -in a wide variety of standard CAD formats; Scripting in the Modeller makes it a [...]
April 20, 2017
By Nigel Atkinson So, what is magnetron sputtering? It is a physical vapour deposition technique, in which a plasma in a chamber is used to generate ions that are accelerated towards a negative target, ejecting material, which is then allowed to deposit on a workpiece, or substrate as it is usually known. Low pressure is [...]
April 7, 2017
Hello and welcome to this short blog on the simulation of transformers in Opera. Starting with the very basics of transformers, in an ideal world different windings on primary and secondary circuits produce transformed voltages and currents on the output compared to the input according to very simple calculations.
March 31, 2017
This blog will discuss how to design synchronous reluctance machines in Opera. Here is some sample geometry of a typical Synchronous Reluctance, or SyncRel, machine, showing a cross-section of the laminations.
March 30, 2017
By Chris Riley Welcome to this blog on modelling superconducting corrector coils with OperaFEA simulation software. We will start with a little bit of history. The Opera software has links back to the Rutherford laboratory’s Computer Applications Group that began developing computer methods for the design of particle accelerator magnets in the late 1960s. The [...]
March 24, 2017
If we consider a general ion device, in terms of simulation, what components might we encounter? Very often we have a source of particles – occasionally the particles that are eventually required, but more often, they are electrons or ions in a lower ionization state than needed.
March 17, 2017
Superconductivity is a phenomenon of exactly zero electrical resistance, and expulsion of magnetic fields, occurring in certain materials when cooled below a characteristic critical temperature. Superconductivity was first discovered over 100 years ago by super cooling Mercury to 4.2 K.
March 10, 2017
By Nigel Atkinson In this blog I’ll outline how to simulate the switched reluctance machine, or SRM. An SRM is typically driven using trapezoidal waveforms and the switch of the phases is done in sequence with the rotor position. The torque is produced by the tendency of the rotor to align with the currently excited [...]
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