Other Parts Discussed in Thread: TMS320F28027, MOTORWARE
Hi,
We are using TMS320F28027 controller which comes with in built InstaSPIN-FOC module to control a BLDC motor.
We have tuned both the current loop and speed loop using the InstaSPIN labs 5A, 5B with the help of motorware drivers.
But after tuning to a satisfactory performance at no load, when we start loading the line current waveform keeps distorting but when loaded fully the waveform tends to be a pure sine.'
NO-Load line current waveforms
Medium load huge distorting leading to high current from the dc supply
Full load and the waveform seems to be better
We have tried adjusting the Kp and Ki parameters for both the speed and current controllers and still no luck.
We would like to know if there is anything that we are missing or any parameter which could lead this kind of behaviour.
Thanks in Advance
