THREE-PHASE PWM POWER CONVERTER PERFORMING DEAD TIME CORRECTION

摘要

PROBLEM TO BE SOLVED: To solve a problem of occurrence of an error in a dead time correction value accompanying an error in a current sampling value caused by a detection offset of a current sampling device.;SOLUTION: Current at next sampling is estimated by converting three-phase current to two-phase current components of ab axes using a current component converter, which makes a configuration be extremely simple. The conversion of the three-phase current to the two-phase current components of ab axes can mitigate influence of an offset of a current sampling device, which makes it possible to calculate an accurate dead time correction value.;COPYRIGHT: (C)2014,JPO&INPIT