Quote:
Originally Posted by cts_casemod
I'm off to design a PCB to my inverter
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Any suggestions on some stuff I should add?
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Motor temperature monitor, scaling back output according to temperature. Maybe a PWM cooling system output to control water cooling pump or fans. Low duty cycle when IGBTs are cool and increasing to keep IGBTs temperature below the level where power output needs to be reduced.
That way the cooling system uses the least power possible and generates the least noise possible.
Some outputs for various features that only discovered to be needed long after the PCB is manufactured.
One output i can think of would be a load indicator. Used to indicate when the motor was working hard. Could be used to inhibit things that may put added load on the motor or the batteries.
For example, if the A/C compressor was running via a belt to the drive motor then disabling the A/C clutch during heavy acceleration would be handy.
Also if an electric heater element is used then this could also be disabled during heavy acceleration. Even the DC-to-DC converter. Basically any of the high power users that may put an unneeded demand on the traction system during acceleration.
That's all i can think of off the top of my head.