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Difference between samples with MTRCKTSBNZVM128

Question asked by hiro2hiro on Dec 19, 2018

Hi,

 

I am trying motor control with MTRCKTSBNZVM128.

I want someone to answer my question.

 

I am using the samples MTRCKTSBNZVM128_HALL_CW11 and MTRCKTSBNZVM128_SENSORLESS_CW10.

 

As shown in the graph below, HALL (1) has larger current consumption than SENSORLESS.

The horizontal axis is the number of revolutions [rpm], and the vertical axis is the current [A].

 

 

However, when you try at a certain time, it is equivalent to SENSORLESS like HALL (2).

 

I confirmed the source code, but I think both are 120 degree conduction, not vector control.

 

I have not changed the NXP kit at all.

 

Is there a possibility that the HALL sample behaves like SENSORLESS under some conditions?

 

I'd like to receive advice.

 

Thank you.

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