ʻEkolu-phase inverter ka hoʻololi 'ana o ka ac voltage phase, oia hoi AC380V, ekolu-phase uila i hana ia o ekolu like alapine, amplitude, mahele okoa o 120 ° i kekahi i kekahi ma ka huli like hoololi o ka uila hiki. he ekolu-phase inverter hoohuli i ka dc i ka ac mana converter, ke kumu kumu o SPWM , lako lako hana o eha mana module o hookahi-phase, ekolu-phase alahaka 'ano kaapuni, alahaka ma waena o ka puka a me ka ukana hui o ka haʻahaʻa-pass kānana mea, ʻElua kumu hōʻailona o ke kaapuni mana, ʻo ka nalu triangular i hoʻopaʻa ʻia amplitude modulation wave generator, a sine wave generator, Sine wave no ka hoʻohana ʻana i ka modulation wave triangle.