Getting error of branched signals in MTPA control reference block

Question

Rajani Jain 2023-11-24

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https://ww2.mathworks.cn/matlabcentral/answers/2051617-getting-error-of-branched-signals-in-mtpa-control-reference-block

评论： Rajani Jain 2023-12-13

The error is generated when using MTPA block in my foc control pmsm model. kindly suggest the solution

"Branched signals cannot be fed into a Merge block. The signal from 'PMSM_PI_SVPWMoct6/MTPA Control Reference/Interior PMSM/MTPA_and_Field_Weakening/dq limiter/Saturation2' output port 1 is connected to both Merge block 'PMSM_PI_SVPWMoct6/MTPA Control Reference/Interior PMSM/Merge' input port 1 and to 'PMSM_PI_SVPWMoct6/MTPA Control Reference/Interior PMSM/MTPA_and_Field_Weakening/dq limiter/Product1' input port 1. To fix this error, you can insert a Signal Conversion block in Signal Copy mode and feed the output of the Signal Conversion block to only the Merge block."

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Answer 1

akshatsood 2023-12-6

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https://ww2.mathworks.cn/matlabcentral/answers/2051617-getting-error-of-branched-signals-in-mtpa-control-reference-block#answer_1366679

Hi @Rajani Jain,

I understand that you are encountering an error when using "MTPA" block in "Foc Control PMSM Model". The error message attached says that "Branched signals cannot be fed into a Merge Block". This issue arises from the fact that a signal line directed to a "Merge" block cannot be branched elsewhere. If there is a necessity to utilize this signal line in another location, you may resolve this by incorporating a "Signal Conversion" block and configuring it to perform "Signal Copy." This proposed solution has also been explicitly mentioned within the error message you received.

I hope this helps.