MC toperating emperature range

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VectrixLeaf
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MC toperating emperature range

Hi,

Riding my vectrix about 80 km/h in road my MC is working at 48ºC but if a ride up hill in mountain road with about 7-12% ramp and 50 km/h MC reaches about 54-57 ºC and about few seconds - 1 minute later decrease at 48ºC....What is the limit working temperature of MC? Is this temperature normal? Have MC a temperature limit where stop for security?
Thanks

israndy
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Re: MC operating temperature range

I remember getting 50° readings on my battery pack right before it failed. That's probably not good.

-Randy

Also own a 2018 Tesla Model 3 and a 2000 Honda Hybrid Insight

VectrixLeaf
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Re: MC operating temperature range

Thanks for reply. Sorry for my english. I mean motor controller temperatura, not battery temperature. My batteries are about 17 celius. You can see MC temperature in dash with ICM rev4.
Thanks.

antiscab
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Re: MC toperating emperature range

What is the limit working temperature of MC? Is this temperature normal? Have MC a temperature limit where stop for security?

I would suggest that's fairly normal - that heatsink does warm up somewhat - I presume the MC fan is running at that temperature?

The MC has two forms of temp limit
One is the external temp sensor that measures temperature on the IGBT module - this is bolted to the top
The MC reduces maximum phase current at higher temperature

The other is the IGBT internal temp sensor - If the internal temp threshold is reached, the IGBT shuts down completely until the temp falls
This happens rather quickly, and is easily noticed because acceleration will become extremely jerky

Daily Ride:
2007 Vectrix, modified with 42 x Thundersky 60Ah
Vectrix 60Ah Lithium Tyres Fuel Registration Insurance cycle analyst 2 x TC Charger & MC
conversion

VectrixLeaf
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Re: MC toperating emperature range

Thanks,

Of course, fans are running from 45ºC. At this temperature (50-60 ºC) fan is running quickly.

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