公开(公告)号：US20250112565A1

公开(公告)日：2025-04-03

申请号：US18375005

申请日：2023-09-29

Applicant: STMicroelectronics International N.V.

Inventor： Harsha ADEMANE ,  Rosario ATTANASIO ,  Dino COSTANZO

IPC: H02P1/46 ,  H02P6/182

Abstract: Systems, apparatuses, and methods to perform startup step detection in an internal permanent magnet synchronous machine are provided. Startup step detection may providing a motor comprising a rotor and stator, wherein the rotor may be positioned in one of six rotor step positions. The startup step detection may include determining which of the six rotor step positions the rotor is in. This may be performed by determining, prior to starting the motor, a sequence of voltage signals while taking current measurements for each voltage signal. The current measurements may be a change in current over time. Of the current measurements a largest maximum current measurement may be determined, which may be used to identify the current rotor step position.