I had the chance to do a short temperature test with the beta version of the Focbox UNITY. For the test the MOSFET temperature cutoff start was set to 85 °C and I run the FOC open loop command with 80A motor current for both connected SK3 6374 motors to see how long the Unity could handle that high current before it reaches max MOSFET temperature and reduce the motor current.
Thanks to @rpasichnyk we have a first Metr App and Metr Pro beta version that talks to the Focbox UNITY.
The results from the Unity temperature test you can see here:
The motor current displayed in the graph is the motor current of both motors together. As you can see the Focbox Unity was able to deliver a total of 80A per motor for around 90 seconds. Very impressive for such a small design. After that the MOSFET temperature limit of 85 °C was near to getting reached and the Unity starts to decrease its motor current output. The motors were pulling the max possible motor current throughput for around 8 minutes ending in around 40A each. After that the open loop command was stopped and you can see the temperature falling for another 2 minutes before the recording was ended. The test was done in room temperature with the Unity laying on the desk. There was no airflow for better cooling available, just the Unity in the beta version of the aluminum case.
Definitely props to @Deodand for that accomplishment. Hitting the temperature limit with electric skateboards in the real world will be hard I guess.
Hope you guys can obtain some useful information from that test.