I use single shunt algorithm to catch phase current, but check the 3 phase output side I can see there exist abnormal turn on/turn off signal as the attachment figure

SkyWork · ‎2021-01-18

SkyWork · ‎2021-02-06

I don't solve any issue, basic is is not a issue. the reason is that is ST's patent for catch current under one shunt architecture

ST will insert Zero vector (V0 or V7), in the special case for example when two of 3 phase duty cycle is to similar.

Cristiana SCARAMEL · ‎2021-01-19

Hello @SkyWork,

Which boards are you using?

Control method?

Application ratings?

For a better support, please share any other useful info.

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Cristiana SCARAMEL · ‎2021-01-22

Hello @SkyWork,

do you still need Community support?

If you feel a post has answered your question, please click "Accept as Solution"

SkyWork · ‎2021-01-26

Hello @Cristiana SCARAMEL

I have clarified this issue thanks for your support

Cristiana SCARAMEL · ‎2021-02-04

Hello @SkyWork,

could you share a summary about your issue and how you solve it.

In this way could help the Community members who might have similar concern.

If you feel a post has answered your question, please click "Accept as Solution"

SkyWork · ‎2021-02-06

I don't solve any issue, basic is is not a issue. the reason is that is ST's patent for catch current under one shunt architecture

ST will insert Zero vector (V0 or V7), in the special case for example when two of 3 phase duty cycle is to similar.