e medium with a recorded program for computer to regulate the spannungswandlergeru00e4t spannungswandlung

摘要

PROBLEM TO BE SOLVED: To provide a voltage converter which can suppress the oscillation of an output voltage.;SOLUTION: The voltage converter includes a controller 30 which calculates the voltage command value of a step-up converter 12 based on a torque command value TR1 (or TR2) and a motor rotational speed MRN1 (or MRN2), and calculates an on-duty D_ON_1 of an NPN transistor Q1 based on the calculated voltage command value and a DC voltage Vb from a voltage sensor 10. The controller 30 controls NPN transistors Q1, Q2 so as to perform the step-up operation of a step-down operation by fixing the on-duty D_ON_1 of the NPN transistor Q1 to 1.0 when the on-duty D_ON_1 is effected by influences of dead times of the NPN transistors Q1, Q2.;COPYRIGHT: (C)2005,JPO&NCIPI