Experimental Analysis of the Line Side Behaviour of an Uncontrolled 12-Pulse Rectifier with Capacitive DC-Smoothing Compared to Analytical Analysis.

Abstract

The analytical calculation of the line side behaviour of a 12-pulse diode rectifier with capacitive DC-smoothing is not described in any book, because the classical theory deals with the ideal DC-current in the DC-link. This paper is about the analytical calculation of the line side behaviour of an uncontrolled B12-rectifier with capacitive DC smoothing. The analytical calculation enables to quantify the effects on the line current in a very short time compared to time consuming simulation studies. This publication only deals with the DC-current that has no gaps. The piecewise determined currents on the secondary side of the transformer are transformed to the primary side. After that, the spectrum of the mains current can be determined easily. The experimental analysis in this paper will verify the analytical calculation.