Hi,
I am working with BOOSTXL-8323RS and a custom PMSM with inductance 100-320 uH (based on temp and freq). During identification lab 05, at 30 kHz switching frequency motor identification fails during the ramp up state of the FAST estimator. However, identification process works well up to 25 kHz switching frequency.
As of now, I am using default tick rates/decimation values specified in the code. I have measured the InstaSPIN-FOC + FAST execution time by toggling GPIOs when the motor is running at rated speed at 24 V. Total Time = 25 us = InstaSPIN-FOC (11 us) + FAST est (14 us). Based on this I was able to use switching frequency of 35 kHz during normal operation. However, it fails in the identification process above 25 kHz.
1. Is it because of the ISR interrupt overrun due to the higher switching frequency?
2. Does it mean that FAST takes more than 25 us during motor identification process? If I want to increase switching frequency in identification process, will I have to adjust tick/decimation rate?
Best,
Amit
