I'm adding some over under range detection to my code and (assuming no bugs in my code etc) note that temphs (I have it mapped to a can message like so can tx tmphs 20 0 16 1.00 0), varies wildly and quickly.
It'll start off at approx ambient and on a light throttle will be around 50, but if i nail the throttle in rises within seconds to 90+, and the settles equally as quickly when i lift off. The fluctuations are so quick and large that it's hard to believe it is measuring temperature at all.
What is the experience of others if monitoring this ?
inverter tempHS fluctuations
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inverter tempHS fluctuations
E46 touring
Phev rear motor, OEM inverter cabin heater and charger
BMW 9kwh & 12kwh packs
Phev rear motor, OEM inverter cabin heater and charger
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- Bigpie
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Re: inverter tempHS fluctuations
It's like this on the Prius gen3 inverter, it's measuring the temperature of the IGBTs. It will rise and fall rapidly.
VW Beetle 2003
Outlander front generator
Prius Gen 3 inverter (EVBMW logic board)
Outlander charger
3x Golf GTE batteries
Chademo Charging
Outlander water heater
Outlander front generator
Prius Gen 3 inverter (EVBMW logic board)
Outlander charger
3x Golf GTE batteries
Chademo Charging
Outlander water heater
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Re: inverter tempHS fluctuations
ok - so normal
what might a sensible maximum value alert be do you think ?
E46 touring
Phev rear motor, OEM inverter cabin heater and charger
BMW 9kwh & 12kwh packs
Phev rear motor, OEM inverter cabin heater and charger
BMW 9kwh & 12kwh packs
- Bigpie
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Re: inverter tempHS fluctuations
Personally, I don't worry about it The Prius inverter will protect itself, can't remember if it cuts out or derates, but I've never managed to get there with my setup.
VW Beetle 2003
Outlander front generator
Prius Gen 3 inverter (EVBMW logic board)
Outlander charger
3x Golf GTE batteries
Chademo Charging
Outlander water heater
Outlander front generator
Prius Gen 3 inverter (EVBMW logic board)
Outlander charger
3x Golf GTE batteries
Chademo Charging
Outlander water heater
- bexander
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Re: inverter tempHS fluctuations
I use the Yaris inverter with the same behaviour and I agree with Bigpie.
I have a warning light come on at 80degC over a 10 sample average.
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Re: inverter tempHS fluctuations
> I have a warning light come on at 80degC over a 10 sample average.
ok - mine was set to 65 over 10 average and kept alerting so i'll push it up.
thanks
ok - mine was set to 65 over 10 average and kept alerting so i'll push it up.
thanks
E46 touring
Phev rear motor, OEM inverter cabin heater and charger
BMW 9kwh & 12kwh packs
Phev rear motor, OEM inverter cabin heater and charger
BMW 9kwh & 12kwh packs