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STPM32 数据表(PDF) 59 Page - STMicroelectronics |
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STPM32 数据表(HTML) 59 Page - STMicroelectronics |
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59 / 89 page  Table 40. Power offset LSB Parameter Value Power LSB value LSBP= Vref2∙ 1+R1R2 kint∙AV∙AI∙kS∙calV∙calI∙228 WLSB Power offset LSB value LSBPO=LSBP∙22= Vref2∙ 1+R1R2 kint∙AV∙AI∙kS∙calV∙calI∙228∙22 WLSB Power offset can be compensated by measuring the power value when the current I = 0, if the average value is not null; the value is due to external influences, then an opposite value should be applied to the power offset register. Note: The apparent power offset OFSx is not added to apparent power, but directly to apparent energy (either RMS or vectorial apparent energy). In case of vectorial apparent power calculation, an offset applied to active or reactive energy will be reflected also on the apparent power. STPM32, STPM33, STPM34 Application calibration DS10272 - Rev 13 page 59/89 |
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