公开(公告)号：US20220190765A1

公开(公告)日：2022-06-16

申请号：US17681787

申请日：2022-02-27

Applicant: Turntide Technologies Inc.

Inventor： Trevor A. Creary ,  Mahesh Krishnamurthy ,  Piyush C. Desai ,  Mark Johnston ,  Timothy Knodel

IPC: H02P25/089 ,  H02P25/092

Abstract: A method and apparatus for quasi-sensorless adaptive control of a high rotor pole switched-reluctance motor (HRSRM). The method comprises the steps of: applying a voltage pulse to an inactive phase winding and measuring current response in each inactive winding. Motor index pulses are used for speed calculation and to establish a time base. Slope of the current is continuously monitored which allows the shaft speed to be updated multiple times and to track any change in speed and fix the dwell angle based on the shaft speed. The apparatus for quasi-sensorless control of a high rotor pole switched-reluctance motor (HRSRM) comprises a switched-reluctance motor having a stator and a rotor, a three-phase inverter controlled by a processor connected to the switched-reluctance motor, a load and a converter.

公开(公告)号：US11784598B2

公开(公告)日：2023-10-10

申请号：US17681787

申请日：2022-02-27

Applicant: Turntide Technologies Inc.

Inventor： Trevor A. Creary ,  Mahesh Krishnamurthy ,  Piyush C. Desai ,  Mark Johnston ,  Timothy Knodel

IPC: H02P25/08 ,  H02P25/089 ,  H02P25/092

CPC classification number: H02P25/089 ,  H02P25/092 ,  H02P2203/01 ,  H02P2205/01

Abstract: A method and apparatus for quasi-sensorless adaptive control of a high rotor pole switched-reluctance motor (HRSRM). The method comprises the steps of: applying a voltage pulse to an inactive phase winding and measuring current response in each inactive winding. Motor index pulses are used for speed calculation and to establish a time base. Slope of the current is continuously monitored which allows the shaft speed to be updated multiple times and to track any change in speed and fix the dwell angle based on the shaft speed. The apparatus for quasi-sensorless control of a high rotor pole switched-reluctance motor (HRSRM) comprises a switched-reluctance motor having a stator and a rotor, a three-phase inverter controlled by a processor connected to the switched-reluctance motor, a load and a converter.

公开(公告)号：US11264932B2

公开(公告)日：2022-03-01

申请号：US16945269

申请日：2020-07-31

Applicant: Turntide Technologies Inc.

Inventor： Trevor A. Creary ,  Mahesh Krishnamurthy ,  Piyush C. Desai ,  Mark Johnston ,  Timothy Knodel

IPC: H02K23/00 ,  H02P25/089 ,  H02P25/092

Abstract: A method and apparatus for quasi-sensorless adaptive control of a high rotor pole switched-reluctance motor (HRSRM). The method comprises the steps of: applying a voltage pulse to an inactive phase winding and measuring current response in each inactive winding. Motor index pulses are used for speed calculation and to establish a time base. Slope of the current is continuously monitored which allows the shaft speed to be updated multiple times and to track any change in speed and fix the dwell angle based on the shaft speed. The apparatus for quasi-sensorless control of a high rotor pole switched-reluctance motor (HRSRM) comprises a switched-reluctance motor having a stator and a rotor, a three-phase inverter controlled by a processor connected to the switched-reluctance motor, a load and a converter.