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Motor temperature via winding resistance

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RSR
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Motor temperature via winding resistance

If winding resistance be monitored, e.g. at intervals by injecting d-current (or only at idle/standstill), then a resistance increase of 30% (or so compared to what was measured during motor/FOC configuration) can be interpreted as "motor is overheating".

frank
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Thx for the input. It will be debated. Frank
benjamin
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I have done some testing with this as it would be very useful, but so far I only got it working reasonably at low speeds. That was without signal injection though. When I spend more time on signal injection for position estimation at 0 speed for salient motors I will have another look.

Dillon
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That would be really cool

bobbygz17
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Since HFI is working so well, are there any plans to use DC injection to dynamically measure winding resistance for motor temp?   

JulianT
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Would be great!

JulianT
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Would be great!