Electromagnetic Vibration Characteristics of Inter-Turn Short Circuits in High Frequency Transformer
Abstract
:1. Introduction
2. Electromagnetic Vibration Noise Mechanism of High Frequency Transformer under Inter-Turn Short Circuits
2.1. Equivalent Electromagnetic Coupling Model under Inter-Turn Short Circuit
2.2. Stress Calculation of Transformer Iron Core and Winding
2.3. Analysis of Acoustic Field
3. Modeling of High Frequency Transformer
4. Analysis of Vibration and Noise Characteristics under Inter-Turn Short Circuits
4.1. Analysis of Short-Circuit Current and Axial Magnetic Flux Leakage
4.2. Analysis of Winding Vibration Acceleration Harmonic Response and Stress Distribution
4.3. Acoustic Field Distribution
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Item | Unit | Value |
---|---|---|
Iron core outer width a | mm | 80 |
Iron core outer height b | mm | 95 |
Iron core inter width c | mm | 50 |
Iron core inter height d | mm | 65 |
Iron core thickness e | mm | 35 |
Air gap f | mm | 2 |
Iron core window width g | mm | 15 |
Fillet radius r | mm | 10 |
Cross-sectional area of core g × e | mm2 | 15 × 35 |
Cross-sectional area of core window d × c | mm2 | 65 × 50 |
Item | Unit | Value |
---|---|---|
Model | / | QZ-2 |
Resistivity | Ω·m | 1.73 × 10−8 |
Length of primary winding | mm | 5.00 |
Width of primary winding | mm | 1.00 |
Cross-sectional area of primary winding | mm2 | 5.00 |
Length of secondary winding | mm | 5.00 |
Width of secondary winding | mm | 1.25 |
Cross-sectional area of secondary winding | mm2 | 6.25 |
Airway widths between primary and secondary windings | mm | 5.00 |
Thickness of insulating resin contact block | mm | 2.50 |
Density | kg·m−3 | 1.26 |
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Ding, H.; Zhao, W.; Diao, C.; Li, M. Electromagnetic Vibration Characteristics of Inter-Turn Short Circuits in High Frequency Transformer. Electronics 2023, 12, 1884. https://doi.org/10.3390/electronics12081884
Ding H, Zhao W, Diao C, Li M. Electromagnetic Vibration Characteristics of Inter-Turn Short Circuits in High Frequency Transformer. Electronics. 2023; 12(8):1884. https://doi.org/10.3390/electronics12081884
Chicago/Turabian StyleDing, Haibo, Wenliang Zhao, Chengwu Diao, and Min Li. 2023. "Electromagnetic Vibration Characteristics of Inter-Turn Short Circuits in High Frequency Transformer" Electronics 12, no. 8: 1884. https://doi.org/10.3390/electronics12081884