Abstract:
Fault diagnosis of switching devices is crucial for improving the reliability of power converters. In this paper, a current-slope-based fault diagnosis scheme is proposed...Show MoreMetadata
Abstract:
Fault diagnosis of switching devices is crucial for improving the reliability of power converters. In this paper, a current-slope-based fault diagnosis scheme is proposed for power switches in asymmetric half-bridge converters. First, a new current sensor installation scheme is proposed to obtain more current information for fault diagnosis while using fewer power devices and current sensors. In addition, a simple algebraic expression for the phase current under normal conditions is derived. Second, the principles of the fault diagnosis scheme are presented, enabling effective fault diagnosis of switches by digitizing the current slope. Finally, experiments are carried out on a four-phase switched reluctance motor system to verify the effectiveness of the proposed fault diagnosis scheme.
Published in: Protection and Control of Modern Power Systems ( Volume: 10, Issue: 2, March 2025)
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- IEEE Keywords
- Index Terms
- Switch Fault ,
- Asymmetric Half-bridge Converter ,
- Current Strategies ,
- Power Conversion ,
- Current Information ,
- Current Sensor ,
- Fault Diagnosis ,
- Current Slope ,
- Sampling Time ,
- Control Strategy ,
- Transition State ,
- Misdiagnosis ,
- Short-circuit ,
- Diagnosis Method ,
- Current Flow ,
- Experimental Verification ,
- Normal Operation ,
- Reconstruction Method ,
- Operation State ,
- Semiconductor Devices ,
- Fault Diagnosis Method ,
- Gate Signals ,
- Fault Occurrence ,
- Winding Current ,
- Amount Of Features ,
- Radar Chart ,
- Voltage Sensor ,
- Current Transformer
- Author Keywords
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Index Terms
- Switch Fault ,
- Asymmetric Half-bridge Converter ,
- Current Strategies ,
- Power Conversion ,
- Current Information ,
- Current Sensor ,
- Fault Diagnosis ,
- Current Slope ,
- Sampling Time ,
- Control Strategy ,
- Transition State ,
- Misdiagnosis ,
- Short-circuit ,
- Diagnosis Method ,
- Current Flow ,
- Experimental Verification ,
- Normal Operation ,
- Reconstruction Method ,
- Operation State ,
- Semiconductor Devices ,
- Fault Diagnosis Method ,
- Gate Signals ,
- Fault Occurrence ,
- Winding Current ,
- Amount Of Features ,
- Radar Chart ,
- Voltage Sensor ,
- Current Transformer
- Author Keywords