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This paper presents analytical and experimental considerations on the noise generated in the typical switching regulator with two-winding configuration. There are two kinds of surges; one occurs at the instant from ON to OFF of the switching transistor, and the other occurs at the instant from OFF to ON of the transistor. These surges appear as high voltages across the semiconductor elements and decrease...
In this paper the "optimum" load voltage sensing technique for a single phase uninterruptible power supply (UPS) system utilizing the sine pulse width modulation (SPWM) technique is obtained. For this purpose an analysis method is developed. The system is first analyzed under open loop conditions and the analysis is verified on an 1 kVA experimental unit. Predicted and experimental results...