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20 January 2017

Back to Basics: Three-Phase Sinusoidal Voltages

Three-phase AC voltages consist of three voltage vectors
Figure 1: Three-phase AC voltages
consist of three voltage vectors
In a previous post, we briefly covered the basics of single- and three-phase AC power systems. Single-phase systems, as we've noted, comprise a single voltage vector with a magnitude (in VAC) and a phase angle. Of course, a three-phase voltage consists of three voltage vectors and three phase angles. This installment will go on to describe three-phase AC voltages in similarly brief fashion.