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An ac System Interruption Analysis of an Orthogonal-Core Type dc-ac Converter

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4 Author(s)

This paper describes an analysis of the transient response of an orthogonal core-type dc-ac converter for use in a photovoltaic power system. The analysis is based on a numerical model of an orthogonal core for use with the SPICE circuit analysis program. As one example of such a transient response analysis, we calculated the voltage and current of the dc-ac converter when its secondary is cut off from the ac system. The calculated results agreed well with measurements. The analytical method presented here is useful for predicting the behavior of a photovoltaic power system at the occurrence of ac system interruptions, line-to-line faults and various other faults.

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IEEE Translation Journal on Magnetics in Japan  (Volume:7 ,  Issue: 5 )