Antti Lehikoinen

Summary As the title suggests, with wordplay downright hysterical (thanks, Robert, for the extra pun!)

Update August 2026 This post was originally written before more information surfaced.

Preface I had already written this post up to the analytical methods section when WordPress saw fit to lose all my progress for some reason.

Summary You may have come across the term ‘fluid flux barrier’, or ‘fluid barrier’, or in any case fluid-something, in the context of synchronous reluctance motors.

Summary Getting started in consulting electric motor design.

The split ratio, defined as the rotor OD divided by the the stator OD, is one of the key dimensions defining the performance of an inrunner electrical machine.

Finding the operating point of an electric motor is no longer as simple as it used to be.

There’s one topic that I repeatedly find myself drawn to – the relative better-ness of axial and radial-flux electric motors.

The last week or so, the new ‘carbon-wrapped’ motor to be used in the Tesla Model S Plaid has been everything anyone has been speaking about.

If you have been online anywhere near the motor-centric Internet bubble during the last two weeks or so, you simply can’t have missed Mahle’s new electric traction motor.

Here’s a no-brainer tip for you: space vectors are useful when designing electric motors.

After all Covid-related hassle, a new micropost!

Have you been living under the rock for the last six months or so?

The number of poles (of an electric motor) has become something of a pet peeve of mine.

Why two popular textbook equations are actually the same Have you read the earlier post about torque calculation?

Interview with DARWYN Hello all, and welcome to this interview series on all things motors.

Peak torque comparison between axial and radial flux machines Welcome back!

Interview with Aegis Power Systems Hello all, and welcome to this interview series on all things motors.

Introduction to axial-flux machines Chances are, you have seen some bold claims regarding axial-flux machines in the recent years.

Important dimensions of SRMs and SynRMs Hi there, and welcome back to our post series about switched and synchronous reluctance motors!

Hypehypehypehypehypehypehypehypehype Alright, let’s be serious.

Some informal tips for job-seeking Nowadays, I semi-regularly have people asking me for jobs.

SRM vs SynRM performance - basic calculations Great, you’re back!

Guest post at Revonte.com Briefly: Recently, I’ve been helping the Revonte folks with their e-bike drivetrain design and optimization.

Differences of switched and synchronous reluctance machines Saw the earlier post about the differences (if any) between BLDC motors and permanent magnet AC motors?

What are BLDC motors?

Induced eddy currents in a steel sheet Woo, another great animation!

Magnetic levitation without 3D-FEA Remember the earlier post about magnetic bearings?

Poynting vector - the friendly neighbourhood power balance Shameful admission here: I only learned about the Poynting vector a few weeks ago.

Matlab versus Python Without too much of a preamble, here’s a rather subjective comparison of Matlab and Python.

Illustration of circulating and eddy currents with PWM supply Recently, I gave a lecture for a course on model order reduction for electrical machines.

Self-levitating motor 101 …or can work.

How FEA on 3D magnetics works SMEKlib goes 3D!

Circulating currents in ~100 words.

What are active magnetic bearings, and how do they work?

How FEA works, briefly put.

Lagrange multiplier-y learning time After the immensely-practical torque calculation series, let’s do something completely different: intricacies of numerical analysis.

Virtual work and torque computation The series about analytical torque computation methods continues.

More options for analytical torque computation Last time, we covered the simple airgap model: a cylindrical airgap, with uniform length.

Analytical torque computation 101 The last post covered several alternative ways to compute the torque of a motor or generator, using finite element analysis.

Numerical torque computation 101 Engineering is an error-critical field.

It's listicle time 6 things you might not know about finite element analysis – but should!

New version of the SMEKlib library Woah, it’s been more than a year since I released the first version of SMEKlib (an open-source Matlab library for finite element analysis of electrical machines, in case you’ve missed).

2017 review - kinda late Yet another run-of-the-mill, year-in-review post, only one that’s almost one month late?

Electrical machines and torsional vibrations - stability Hi there!

Torsional vibrations - what they are, and how to analyze them As you may remember, the previous post covered the most significant types of vibrations in electrical machines.

Different kinds of vibrations in electrical machines Hello again!

Second-order finite elements - what and why Hi all!

Developing high-performance electric motors for aircraft Saw my earlier post about electric aviation?

My D.Sc. research very briefly Hi all!