Position Estimation at Zero Speed for PMSM

Le Nguyen98

Prodigy 20 points

Other Parts Discussed in Thread: MOTORWARE

Hello,

i would like to know, how excactly is the rotor position at zero speed calculated? Did TI use the pulse-voltage method?

If i want to buy a license to see the IPD_HFI library, who should i contact?

Please guide me.

Regards,

over 9 years ago

0 Yanming Luo over 9 years ago

TI__Guru** 117020 points

HFI is used for zero or low speed position detect of salient PMSM, the position resolution depends on many factors, like inject voltage, rotor saliency ratio. TI reference design is using pulse voltage inject method for HFI.

0 Le Nguyen98 over 9 years ago in reply to Yanming Luo

Prodigy 20 points

Hi,

cann you tell me howto apply the injected voltage pulses? Are the voltage pulses realized by SVM?

Regards,

0 Yanming Luo over 9 years ago in reply to Le Nguyen98

TI__Guru** 117020 points

Please refer to motorWare lab21 and lab guide. Generally, inject a pulse voltage on Vd to

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Position Estimation at Zero Speed for PMSM