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DETERMINING STRUCTURAL IMPEDANCES
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| Author(s) |
W. A. Cronje; J. A. Ferreira; J. D. van Wyk |
| Abstract |
Structural (stray/parasitic) impedances need to be quantified in order to include them in circuit simulations. Different techniques for determining structural impedances are investigated and compared with regard to accuracy and ease of use. The investigation is conducted for a structural configuration, bus-bar go heat sink return conductor, that find typical application as an interconnection in converter circuitry. The investigation is conducted for relatively high frequencies 100kHz-4MHz and non-infinite earth plane. The impedances for the structure are calculated for several frequencies in the band of interest using the finite element technique as well as with an analytical method derived from microstrip theory. The calculated inductance and resistance as functions of frequency are compared to get an indication of the relative accuracy of the techniques. Simulation results of the dynamic circuit behaviour is compared with experimental results on a simple chopper circuit. |
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| Filename: | Unnamed file |
| Filesize: | 3.741 MB |
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| Type |
Members Only |
| Date |
Last modified 2019-08-15 by System |
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