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TMS320F28062F: Instaspin over modulation questions

Emma Wang
Expert 5250 points
Part Number: TMS320F28062F
Other Parts Discussed in Thread: MOTORWARE

Hi expert,

I have a customer wants to know about the  over modulation on F28062F Instaspin.

they want to know whether we support modulation II erea, or we only support modulation I which only the sixangle?

BR

Emma

  • 0
    TI__Guru** 116090 points

    What do you mean "modulation II erea"? The FAST estimator of InstaSPIN is a sensorless FOC algorithm that can work well with overmodulation at 100% duty, but overmodulation must work with current reconstruction if the current sensing is based on the low-side shunt resistor. You might take a look at chapter lab10a of the instaspin lab user's guide in motorWare that has details about overmodulation and current reconstruction.