公开(公告)号：US20250141388A1

公开(公告)日：2025-05-01

申请号：US18495392

申请日：2023-10-26

Applicant: BorgWarner Inc.

Inventor： Caleb Secrest ,  Yang Sun

IPC: H02P27/08 ,  H02M7/5387 ,  H02M7/5395

Abstract: Embodiments of the disclosure provide an inverter controller operable to perform inverter controller operations that include performing a continuous carrier alignment methodology on an inverter. The continuous carrier alignment methodology includes, for a current sampling period, evaluating a shape of a carrier waveform from a prior sampling period; and determining, based at least in part on an ending location of the carrier waveform from the prior sampling period, whether or not to insert an intermediate carrier shape into the carrier waveform during the current sampling period.

公开(公告)号：US11777435B1

公开(公告)日：2023-10-03

申请号：US17663733

申请日：2022-05-17

Applicant: BorgWarner Inc.

Inventor： Yang Sun ,  Caleb Secrest

IPC: H02P27/08 ,  H02P23/14

CPC classification number: H02P27/08 ,  H02P23/14

Abstract: A method is provided for producing a smooth transition between overmodulation and six-step operation of a SVPWM-controlled 3-phase electric machine. In one aspect, the method predicts the PWM sample for which the control voltage vector will cross the middle of each SVPWM hexagon sector. Then, based on the current voltage angle and duty cycle, as well as on an estimated future voltage angle and duty cycle, an average duty cycle is calculated and inserted. In addition, a PWM carrier waveform is selected to ensure the PWM pulses applied to each period result in continuous switching states.