公开(公告)号：US12107528B2

公开(公告)日：2024-10-01

申请号：US18060670

申请日：2022-12-01

Applicant: Allegro MicroSystems, LLC

Inventor： Lu Wang ,  Masahira Kurihara ,  Kamyar Khosravi ,  Andrea Foletto

IPC: H02P6/18

CPC classification number: H02P6/183

Abstract: Methods and apparatus for motor control having low noise variable-high frequency signal injection for an electric motor. Different injection signals have different signal characteristics. One of the first and second injection signals is selected on a cycle-by-cycle basis as part of a direct voltage signal input to control an electric motor. The first and second signal characteristics are configured to reduce acoustic noise generated by an electric motor.

公开(公告)号：US20240186921A1

公开(公告)日：2024-06-06

申请号：US18060670

申请日：2022-12-01

Applicant: Allegro MicroSystems, LLC

Inventor： Lu Wang ,  Masahira Kurihara ,  Kamyar Khosravi ,  Andrea Foletto

IPC: H02P6/18

CPC classification number: H02P6/183

Abstract: Methods and apparatus for motor control having low noise variable-high frequency signal injection for an electric motor. Different injection signals have different signal characteristics. One of the first and second injection signals is selected on a cycle-by-cycle basis as part of a direct voltage signal input to control an electric motor. The first and second signal characteristics are configured to reduce acoustic noise generated by an electric motor.