公开(公告)号：US20190238067A1

公开(公告)日：2019-08-01

申请号：US16260802

申请日：2019-01-29

Applicant: DENSO CORPORATION

Inventor： Kosuke KONDO ,  Yoo TANAKA ,  Jun ISHIDA

IPC: H02M7/5387 ,  H02P27/06

Abstract: In a control apparatus, a controller perfoi ins comparison between a command voltage and a cyclic carrier signal to thereby perform one of pulse-width modulation upon each of first positive and negative peaks of the command voltage being within or identical to the corresponding one of second positive and negative peaks of the cyclic carrier signal, and single-pulse modulation upon each of the first positive and negative peaks of the command voltage being outside the corresponding one of the second positive and negative peaks of the cyclic carrier signal. The pulse-width modulation generates, for each cycle of the command voltage, plural drive pulses based on a result of the comparison. The single-pulse modulation generates, for each cycle of the command voltage, a single positive pulse and a single negative pulse for each cycle of the command voltage based on a result of the comparison.