Six-Phase BLDC with trapezoidal BEMF

Version 1.1.1 (117 KB) by Nils Herjürgen
A model of a six-phase BLDC with 2x3 phase stator windings, shifted by 30deg and trapezoidal BEMF
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Updated 19 Apr 2021

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Mutual inductances are respected. They are calculated according to https://de.mathworks.com/help/physmod/sps/ref/pmsmsixphase.html. Note the typos in the formula for Lab (the factor 2 has to be within the cos) and Lca (factor 2 missing) which are of course corrected in this implementation. Back-Emf calculation and speed generation was adopted from https://de.mathworks.com/matlabcentral/fileexchange/51069-dynamic-mathematical-modeling-of-brushless-dc-motor-trapezodial-back-emf?s_tid=srchtitle
and adapted to match a six-phase BLDC.

First model was build with R2021a and the R2014a version was exported therefrom. Both were tested in R2021a.

Cite As

Nils Herjürgen (2026). Six-Phase BLDC with trapezoidal BEMF (https://www.mathworks.com/matlabcentral/fileexchange/89749-six-phase-bldc-with-trapezoidal-bemf), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2021a
Compatible with R2014a and later releases
Platform Compatibility
Windows macOS Linux
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Version Published Release Notes
1.1.1

Removed incomprehensible comments
1.1.0

Fixed a bug and added first order transfer function to break algebraic loops.
1.0.3

added preview image
1.0.2

Fixed minor description typo
1.0.1

Minor description update
1.0.0