A Technique for Mitigating Thermal Stress and Extending Life Cycle of Power Electronic Converters Used for Wind Turbines
Abstract
:1. Introduction
2. State of the Art Electro-Thermal Model of IGBT Power Module
2.1. Power Loss Modelling
Layer | Physical Properties at 25 °C | |||||
---|---|---|---|---|---|---|
ρ (kg/m3) | K (W/m·K) | c (J/(kg·K) | CTE (10−6/K) | Young Modulus (MPa) | Poisson Ratio | |
Silicon | 2330 | 153 | 703 | 3.61 | 113.000 | 0.28 |
Solder | 7360 | 33 | 200 | 30.20 | 27.557 | 0.40 |
Copper | 8850 | 398 | 380 | 17.30 | 128.000 | 0.36 |
Aluminium | 3300 | 180 | 750 | 4.60 | 344.000 | 0.22 |
Copper | 8850 | 398 | 380 | 17.30 | 128.000 | 0.36 |
Solder | 11,300 | 35 | 129 | 29 | 16.876 | 0.44 |
Baseplate | 3010 | 180 | 741 | 0.27 | 192.000 | 0.24 |
T. Grease | 2500 | 2 | 700 | 29 | 15.700 | 0.32 |
Heat Sink | 2730 | 155 | 893 | 4.30 | 384.000 | 0.30 |
2.3. Wind Turbine and Utility Grid Modelling
2.4. DC Link Voltage Regulation and Grid Side Converter Control
2.5. Generator Side Control with Switching Frequency Regulation
3. Results and Discussion
3.1. Dynamic DC Link Voltage and Switching Frequency Analysis
Layer | Thermal Capacitance | Thermal Resistance | ||||
---|---|---|---|---|---|---|
Cth,1 | Cth,2 | Cth,3 | Rth,1 | Rth,2 | Rth,3 | |
Silicon | 0.48 | 113.14 | 13.78 | 0.217 | 0.056 | 0.061 |
Solder | 0.69 | 113.31 | 13.92 | 0.212 | 0.055 | 0.058 |
Copper | 0.85 | 113.62 | 14.22 | 0.198 | 0.054 | 0.057 |
AIN | 1.02 | 113.94 | 14.88 | 0.175 | 0.053 | 0.056 |
Copper | 1.57 | 114.31 | 15.31 | 0.154 | 0.053 | 0.056 |
Solder | 2.01 | 114.78 | 16.04 | 0.136 | 0.052 | 0.052 |
Baseplate | 6.63 | 115.02 | 430.0 | 0.132 | 0.050 | 0.009 |
3.2. Comparison of Temperature Profiles for FS and PS Based Back to Back (BTB) PECs
3.3. Thermo-Mechanical Performance of Proposed Model
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Batunlu, C.; Albarbar, A. A Technique for Mitigating Thermal Stress and Extending Life Cycle of Power Electronic Converters Used for Wind Turbines. Electronics 2015, 4, 947-968. https://doi.org/10.3390/electronics4040947
Batunlu C, Albarbar A. A Technique for Mitigating Thermal Stress and Extending Life Cycle of Power Electronic Converters Used for Wind Turbines. Electronics. 2015; 4(4):947-968. https://doi.org/10.3390/electronics4040947
Chicago/Turabian StyleBatunlu, Canras, and Alhussein Albarbar. 2015. "A Technique for Mitigating Thermal Stress and Extending Life Cycle of Power Electronic Converters Used for Wind Turbines" Electronics 4, no. 4: 947-968. https://doi.org/10.3390/electronics4040947