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MSP430F67791A: MSP430F67791A - TIDMTHDREADING

Part Number: MSP430F67791A


Hi,

In e-meter library(TIDMTHDREADING), we are getting POWER_OVERRANGE in evaluate_fundamental_active_power() function. We observed that the I_corrected sample is exceeding the I_ADC_MAX. So under no harmonic condition the fundamental active power calculation at around 180A is giving  wrong result and resulting in return of POWER_OVERRANGE. The behavior changes when 10% ,180Deg voltage harmonic & 40% Current harmonic  is applied at Vref = 240V , I = 130A, UPF and under this condition the fundamental current is accurate  only upto 130A. Please help how to resolve this, we need the calculation to be proper upto 250A.

Rgds,

Santhosh V

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