10kV高压变频器电流波动故障分析与研究

Key Points

• This research aims to analyze and address current fluctuation issues in 10kV high voltage inverters.
• Detailed examination of the working principles and fault characteristics of high voltage inverters.
• Analysis of fault mechanisms involving power electronic devices, control algorithms, grid impacts, and load effects.
• Development of a multi-physics coupling model to better understand faults.
• Investigation of fault diagnosis methods, including time-domain/frequency-domain analysis and machine learning.
• Design of an online monitoring system and optimization of control strategies.
• Proposed enhanced vector control and fault-tolerant control strategies demonstrated significant performance improvements.
• Optimized modulation strategies effectively suppressed current fluctuations.
• Experimental validation confirmed the efficacy of the developed strategies in real-world applications.