公开(公告)号：US20250070629A1

公开(公告)日：2025-02-27

申请号：US18945270

申请日：2024-11-12

Applicant: Linear Labs, Inc.

Inventor： Carlo Kopf ,  Erik Hatch

IPC: H02K16/02 ,  H02K1/18 ,  H02K1/2798 ,  H02P6/15

Abstract: A method includes, at a controller: directing current through a set of coil assemblies in an electric motor based on a first commutation technique; in response to an operating speed of the electric motor exceeding a first operating speed threshold, initiating a transition from the first commutation technique to a second commutation technique; during a transition period, directing current through the set of coil assemblies based on the first commutation technique controlled according to a first pulse width modulation scheme and the second commutation technique controlled according to a second pulse width modulation scheme; and, in response to completion of the transition period, directing current through the set of coil assemblies based on the second commutation technique.

公开(公告)号：US12170467B2

公开(公告)日：2024-12-17

申请号：US18199849

申请日：2023-05-19

Applicant: Linear Labs, Inc.

Inventor： Carlo Kopf ,  Erik Hatch

IPC: H02K16/02 ,  H02K1/18 ,  H02K1/2798 ,  H02P6/15

Abstract: A method includes, at a controller: directing current through a set of coil assemblies in an electric motor based on a first commutation technique; in response to an operating speed of the electric motor exceeding a first operating speed threshold, initiating a transition from the first commutation technique to a second commutation technique; during a transition period, directing current through the set of coil assemblies based on the first commutation technique controlled according to a first pulse width modulation scheme and the second commutation technique controlled according to a second pulse width modulation scheme; and, in response to completion of the transition period, directing current through the set of coil assemblies based on the second commutation technique.