Electrical machines are often simulated with symmetry sectors and periodicity conditions. This speeds up things a lot, but occasionally leads to weirdness.
What are Skin and Proximity Effect, or Circulating Currents
Skin and proximity effect can dramatically increase the losses in your electromagnetic device, as can circulating currents. Read here to learn about them!
Egear and Quantum Electric – Motor News from Finland!
Two new electric motor inventions from Finland. In a way, both are aimed at increasing the operating range of the motor. Read here to learn more!
Determining and Quantifying Sources of Uncertainty
Uncertainty quantification requires determining the sources of uncertainty, such as deviations in the product dimensions. Here’s how to do it.
What’s Troubling Engineers – Future Posts!
Conclusion of the Electromechanics Survey. Common issues identified for the people on this awesome field – future posts will address the key problems.
Frequency Response Analysis – When Motors Explode
Frequency response analysis is used to analyze how a system reacts to a specific excitation. Or, as I like to put it, when things explode.
Animation: Eddy Current Losses in a Stranded Winding
Animated eddy current densities in the stranded winding of an electrical machines. Rarely seen in public – read the post for more details!
Faster Analysis of Eddy-Current Problems: Impulse Response Method
Eddy current problems are usually linear and time-invariant. Thus, they can be fully modelled with their impulse response function.
How to Mesh a Stranded Winding
A stranded winding can be analysed with FEM, but it has to be meshed first. Here’s how to pack conductors in a slot for a good-quality mesh.
Why Equivalent Circuits for Electrical Machines Work
Equivalent circuits for electrical machines do yield correct torque estimates. They use the Lorentz force, but not in a way you’d expect.