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MSP430F67791A: MSP430F67791A: Phase sequence in Internal metering (emeter6779 lib)

Hosam
Intellectual 720 points
Part Number: MSP430F67791A
Other Parts Discussed in Thread: TIDM-THDREADING, EVM430-F6779

Hello TI, 
I hope you are well. While i was reading ti PDF guide for internal metering software, it says that lib support phase sequence. I have worked on the code but i didn't find this phase sequence calumniation.
my question is, does this lib has phase sequence calculation or not? if not, any recommended procedure to do that? if yes, please, point where it is in the code?.

best regards
Hossam

  • 0
    TI__Mastermind 49692 points

    Hello,

    There are several reference designs based on the EVM430-F6779, and some have different features. The TIDM-THDREADING design should support phase-to-phase measurements.

    Regards,

    James

  • 0 in reply to James Evans
    Intellectual 720 points

    Thanks James for your replay but this is not what i meant. I have attached pdf guide paragraph where phase to phase reading description is.
    can you help me in finding phase to phase readings in legacy metering library? if this is possible.

    best regards
    Hossam

     

  • 0 in reply to Hosam
    TI__Mastermind 49692 points

    Hosam said:
    Thanks James for your replay but this is not what i meant. I have attached pdf guide paragraph where phase to phase reading description is.
    can you help me in finding phase to phase readings in legacy metering library? if this is possible.

    I assume that the screenshot is from the TIDM-THDREADING user's guide. I think you're asking where these calculations are done in the code. Did you download and search through the source code for "phase" or "angle"? There should be comments in the code that you can find after searching. For example, the following code comes from the 'metrology-background.c' file.

    phase->readings.phase_to_phase_angle = (phase->metrology.pure_phase >> 16)
                                         - (working_data.phases[ph].metrology.pure_phase >> 16);

    Regards,

    James

  • 0 in reply to James Evans
    Intellectual 720 points

    Thanks James for your replay but this is not in the legacy code I am working on. Anyway i have implemented my own phase sequence detection based on zero crossing detection.

    Regards
    Hossam

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