Switching arrangement and method for operating a switching arrangement
DE502022008023D1Active Publication Date: 2026-06-11SIEMENS AG
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Patent Information
- Application Number
- DE502022008023
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2021-08-16
- Filing Date
- 2022-07-12
- Publication Date
- 2026-06-11
- Estimated Expiration
- 2042-07-12
AI Technical Summary
Technical Problem
Existing medium-voltage switching devices with electromagnetic drives suffer from switch-off delays due to magnetization of the armature plate and iron circuit, which are not actively counteracted, leading to unacceptable tolerances in switch-off times.
Method used
Implement a polarity reversal mechanism using controllable switching devices, such as MOSFETs or IGBTs, to reverse the coil current during each switching operation, ensuring the magnetic field polarity is reversed to prevent magnetization, utilizing an H-bridge configuration and pulse-width modulation for demagnetization.
Benefits of technology
Achieves significantly faster switch-off times by preventing magnetization, maintaining reliable contact closure during operation, and reducing switch-off delays.
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