calibration.h

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#ifndef CALIBRATION_H
#define CALIBRATION_H
 
#include "config.h"
 
//
// Calibration values
//-------------------
// Three calibration values are used in this sketch: f_powerCal, f_phaseCal and f_voltageCal.
// With most hardware, the default values are likely to work fine without
// need for change. A compact explanation of each of these values now follows:
 
// When calculating real power, which is what this code does, the individual
// conversion rates for voltage and current are not of importance. It is
// only the conversion rate for POWER which is important. This is the
// product of the individual conversion rates for voltage and current. It
// therefore has the units of ADC-steps squared per Watt. Most systems will
// have a power conversion rate of around 20 (ADC-steps squared per Watt).
//
// powerCal is the RECIPROCAL of the power conversion rate. A good value
// to start with is therefore 1/20 = 0.05 (Watts per ADC-step squared)
//
inline constexpr float powerCal_grid{ 0.0436f };      // for CT1
inline constexpr float powerCal_diverted{ 0.04446f };  // for CT2
 
inline constexpr float f_voltageCal{ 0.805653f }; 
 
inline constexpr float lpf_gain{ 9 }; 
inline constexpr float alpha{ 0.0011 };
 
//--------------------------------------------------------------------------------------------------
 
#endif /* CALIBRATION_H */