Asynchronous 3-phase power measurements

A new asynchronous, 3-phase/4-channel Power Analyzer for high precision analysis of AC voltage, AC current and power. Advanced signal processing algorithms provide precise measurements of single period events (i.e. single period of a wave form) for sinusoidal, non-sinusoidal and quasi-stationary signals. The uncertainty for AC current and power measurements of a single period event are <;75 pμ/A and <;200 μW/W. The uncertainty of the phase measurement between two single period events (i.e. voltage-to-voltage, current-to-current, and voltage-to-current) is <;50 μrad. Uncertainties are materially reduced with averaging over multiple periods. This paper describes the architecture and algorithms.