Converter Power Losses Computation by FPGA-based HIL Simulator : Invited Paper

J. Dragoun, J. Talla, T. Kosan
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Abstract

Converter losses play a crucial role in the process of power converter design. Especially semiconductor components and heat sink selection are strongly dependent on the total power converter losses and thus affect the power converter size and its price. The most popular techniques for determination of the losses are based on the computer simulation of the power converter. These kinds of simulations could be very time consuming, because on one side, the simulation needs very short step-time for differential equations calculation to model power converter switching. On the other side, the temperature dynamics of heat sink are commonly slow and depend on power cycles of converter. With the help of FPGA-based hardware in the loop (HIL), the simulation could run real-time and it is possible to test different scenarios, different modulation techniques and see their influences on converter losses. This approach can lead to reduction of losses to the state, when it is possible to reduce the size of converter. Furthermore, the HIL simulation could be used for testing and developing control algorithm in real time conditions. It also offers flexibility in the easy change of model parameters and monitoring values which are not or hardly obtainable in real machine. This paper presents the FPGA-based HIL simulator of induction motor drive with three phase voltage source inverter based on Semikron IGBT modules.
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基于fpga的HIL模拟器的转换器功耗计算:特邀论文
在功率变换器的设计过程中,变换器的损耗起着至关重要的作用。特别是半导体元件和散热器的选择强烈依赖于功率转换器的总损耗,从而影响功率转换器的尺寸和价格。确定损耗的最常用技术是基于功率变换器的计算机模拟。这种类型的仿真可能非常耗时,因为一方面,仿真需要非常短的步长来计算微分方程来模拟电源变换器的开关。另一方面,散热器的温度动态通常是缓慢的,并且依赖于转换器的功率周期。在基于fpga的硬件在环(HIL)的帮助下,仿真可以实时运行,并且可以测试不同的场景,不同的调制技术,并查看它们对转换器损耗的影响。这种方法可以减少状态损耗,当有可能减小变换器的尺寸时。此外,HIL仿真可用于实时条件下控制算法的测试和开发。它还提供了灵活性,易于改变模型参数和监测值,这在实际机器中是无法或难以获得的。本文介绍了基于赛米控IGBT模块的三相电压源逆变器感应电机驱动的fpga HIL模拟器。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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