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Method for estimation of power losses and thermal distribution in power converters
Electrical Engineering ( IF 1.8 ) Pub Date : 2021-05-15 , DOI: 10.1007/s00202-021-01303-8
Slavomir Kascak , Patrik Resutik

The power loss estimation is a crucial step for power electronics design, especially for high-power-density systems. Many mathematical approaches are known for power loss estimation, but the system design time can be lowered significantly if a simulation approach is used. This paper discusses the MATLAB-based simulation method for estimating power losses in the three-phase VSI. This simulation is using a real characteristic of the used IGBT transistors for power loss estimation. Next, the model uses the simulated power losses and calculates temperatures at different points in the simulated model. For the visualization, Fusion360 was used to simulate the thermal spreading at the heatsink. Finally, the inverter power losses are measured at the different loads to confirm the accuracy of the model. The temperature of the heatsink is measured with a thermal imaging camera and surface mounted probes.



中文翻译:

估计功率转换器中功率损耗和热分布的方法

功率损耗估算是电力电子设计(尤其是高功率密度系统)的关键步骤。已知许多数学方法可用于功率损耗估计,但是如果使用仿真方法,则可以大大减少系统设计时间。本文讨论了用于估计三相VSI中功率损耗的基于MATLAB的仿真方法。该仿真使用了所用IGBT晶体管的真实特性进行功率损耗估算。接下来,模型使用模拟的功率损耗并计算模拟模型中不同点的温度。对于可视化,Fusion360用于模拟散热器上的热扩散。最后,在不同负载下测量逆变器的功率损耗,以确认模型的准确性。

更新日期:2021-05-15
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