METHOD FOR OPERATING A PERMANENTLY EXCEEDED SYNCHRONOUS MOTOR OF A HAND-POWERED MACHINING DEVICE AND HAND-POWERED MACHINING DEVICE
DE502022007782D1Active Publication Date: 2026-05-21ANDREAS STIHL AG & CO KG
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Patent Information
- Application Number
- DE502022007782
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2022-11-07
- Publication Date
- 2026-05-21
- Estimated Expiration
- 2042-11-07
AI Technical Summary
Technical Problem
Existing methods for operating permanent magnet synchronous motors in hand-held processing devices face challenges in sensorless determination of rotor position and direction, leading to inefficient starting and potential torque limitations.
Method used
A method for sensorless determination of rotor position and direction in a permanent magnet synchronous motor, enabling continuous rotation in a direction that maximizes achievable torque beyond the breakaway torque limit, without the need for magnetic sensors.
Benefits of technology
Enables reliable, cost-effective, and efficient starting of the synchronous motor from any position, with uniform wear distribution and improved torque generation.
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