Virtual Motor Dyno - Efficiency maps for any motor

Electric Motors and Controllers
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Pedrodemio   100 W

100 W
Posts: 112
Joined: Jun 30 2015 8:38pm
Location: Brazil

Virtual Motor Dyno - Efficiency maps for any motor

Post by Pedrodemio » Jul 28 2020 1:47pm

Hi everyone

This is a project that I've been wanting to do for a long time, a virtual motor dyno that from just a few measurements enables us to plot efficiency map, total losses, copper losses, core losses and output power

I made this intended for smaller motors for electric skateboards, but problems with the current measurement at low values in the VESC controllers that most of us use are causing a bit of a headache

Anyways, think this will be use full for hub motors and all that

Cheers

This are the examples using a 6355 190Kv motor, takes it with a grain of salt given the problems with current measurement I'm having

A few more details here

https://forum.esk8.news/t/esk8-motor-dy ... ious/33798
TorqueBoards 6355 190 Kv - Copper Losses.png
TorqueBoards 6355 190 Kv - Copper Losses.png (113.49 KiB) Viewed 299 times
TorqueBoards 6355 190 Kv - Core Losses.png
TorqueBoards 6355 190 Kv - Core Losses.png (94.53 KiB) Viewed 299 times
TorqueBoards 6355 190 Kv - Efficiency Map.png
TorqueBoards 6355 190 Kv - Efficiency Map.png (177.47 KiB) Viewed 299 times
TorqueBoards 6355 190 Kv - Output Power.png
TorqueBoards 6355 190 Kv - Output Power.png (200.28 KiB) Viewed 299 times
TorqueBoards 6355 190 Kv - Total Losses.png
TorqueBoards 6355 190 Kv - Total Losses.png (124.86 KiB) Viewed 299 times
The forum doesn't let me upload MatLab files, so here is a google drive link

https://drive.google.com/file/d/1HNUhrT ... sp=sharing

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