The Impact of DC-power Layout on Stray Inductance of Bridge Arm in Power Converters

摘要整理

In high power converter design, low-inductance busbar connecting DC capacitors and power devices is the main concern to improve the quality of the whole power electronics system. There are several facts which affect the stray inductance of bridge arm. This paper mainly analyzes the influence of DC-power layout on the stray inductance taking a subway traction converter as example. The Psim9.0 software was used to calculate the stray inductance. The conclusion is that DC-power connection should be put different side from DC capacitance because lower stray inductance can be obtained than that of the same side. The simulation and experimental results are given to illustrate the effectiveness.

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