公开(公告)号：US20250096712A1

公开(公告)日：2025-03-20

申请号：US18830847

申请日：2024-09-11

Applicant: Allegro MicroSystems, LLC

Inventor： Simon Kalombo ,  Kamyar Khosravi ,  Masahira Kurihara

IPC: H02P21/34 ,  H02P21/18 ,  H02P21/22

Abstract: Methods and apparatus for automatic tuning of parameters for field-oriented control (FOC) of a BLDC motor with a controller with user input. Automatic tuning can include measuring electrical parameters comprising Phase resistance (Rs), Phase inductance (Ls), and Back-electromotive force (BEMF) constant (Ke). Automatic tuning can further include tuning of ac alignment and start-up processing, tuning of a current closed loop, and tuning of a speed closed loop.

公开(公告)号：US20250088130A1

公开(公告)日：2025-03-13

申请号：US18463443

申请日：2023-09-08

Applicant: Allegro MicroSystems, LLC

Inventor： Simon Kalombo ,  Emanuele Gallazzi ,  Masahira Kurihara ,  Andrea Foletto

IPC: H02P21/34 ,  H02P21/13 ,  H02P21/18 ,  H02P21/22

Abstract: Methods and apparatus for motor startup with reduced acoustic noise include a startup module to generate a startup d-axis voltage during a startup interval and a startup q-axis voltage during the startup interval, wherein the startup interval ends at a time based on the observer error, and wherein the startup q-axis voltage increases during the startup interval. The startup module is configured to continuously linearly increase the speed of the motor during the startup interval. An observer generates a speed estimate, an angle estimate, and an observer error representative of a difference between an actual angle and the angle estimate. A voltage increment by which the startup q-axis voltage is increased during the startup interval is adjusted based on the observer error. The voltage increment can be equal to a constant value plus the observer error.