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Multirate analysis method of a power electronic converter by circuit partitioning

机译：基于电路划分的电力电子变换器的多速率分析方法

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摘要

Various fast and efficient computation techniques for power converter analysis have been researched. According to the conventional methods, a single step size for a whole circuit is selected for the numerical integration. However a power electronic system is multirate where its currents and voltages vary non-uniformly temporally and spatially and its subcircuits have different transient speeds or rates spatially. It is efficient for such a circuit to select an appropriate step size for each subcircuit independently. This technique is called multirate analysis. This paper proposes a new multirate analysis method which divides the whole circuit into subcircuits by applying explicit integration formula to some inductors and capacitors and by applying them with an implicit formula with independent integration step sizes. Finally the method is applied to a DC link inverter control system and the benchmark test circuit proposed by the modeling and simulation committee of SPC in IEEJ. The proposed method is validated for its performances and efficiency by investigating its reduction effects to computational steps and CPU times.
机译：已经研究了用于功率转换器分析的各种快速有效的计算技术。根据常规方法，选择整个电路的单个步长以进行数值积分。然而，电力电子系统是多速率的，其中其电流和电压在时间和空间上不均匀地变化，并且其子电路在空间上具有不同的瞬态速度或速率。对于这样的电路，为每个子电路独立地选择合适的步长是有效的。这种技术称为多速率分析。本文提出了一种新的多速率分析方法，该方法通过将显式积分公式应用于一些电感器和电容器，并通过具有独立积分步长的隐式公式将整个电路分为子电路。最后将该方法应用于IEEJ中SPC建模与仿真委员会提出的直流环节逆变器控制系统和基准测试电路。通过研究其对计算步骤和CPU时间的减少效果，验证了该方法的性能和效率。

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