The 3rd phase needs to occur at a different time than the utility waves.īy having a constant DC power supply, the phase converter can convert the DC back to AC in the proportion it needs at the time it needs it.Įxamples of solid-state phase converters are variable frequency drives and digital phase converters. This also allows the phase converter to offset the 3rd sine wave from the utility sine waves (see the image below). The 3rd electrical sine wave is what creates the 3 phase power (see the image below rotary phase converters section). There is an interesting reason why this is done.īy creating a uniform and constant DC power supply, the solid-state phase converter can then take from this in a reliable way to produce the 3rd electrical AC sine wave. This conversion is accomplished through electronic rectifiers. A solid-state phase converter is a device that produces 3 phase power by converting AC (sine wave) power into DC power, and then back to AC power.
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