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

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Best answer by SkyWork

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.

ST Employee

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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ST Employee

Hello @SkyWork,

do you still need Community support?

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

Associate III

Hello @Cristiana SCARAMEL

I have clarified this issue thanks for your support

ST Employee

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"""

SkyWorkAuthorBest answer

Associate III

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.

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