This paper proposes an improved control method based on modified Delta-Sigma Modulator (DSM) to enhance transient response and improve harmonic contents of buck DC-DC converter. The main advantages of the proposed method are improving the output voltage frequency spectrum, correction of the output voltage harmonic contents and sideband harmonics, reduction of switching noise peaks at the output...

1. Project Goals The objective of this task is to refine and enhance the cost benefit analysis (CBA) associated with a FREEDM System deployment case. This objective will be met by addressing the following sub-tasks: i.Quantify and incorporate the costs associated with stranded assets as well as labor costs for removal of old equipment and installation of new equipment. ii. Refine the marginal v...

This paper reports a voltage reference circuit in standard CMOS process. It exhibits excellent supply independency for a wide input voltage range, which is of great importance in telemetry-powered systems. This circuit is based on the well-known VGS-reference supply-independent current reference circuit, but it is designed to serve as a voltage reference. While the reference current generated b...

Investigation of active-clamped flyback (ACF) dc-dc converter 57W used as the auxiliary power-supply (APS) an inductive-charging system (ICS) is presented. The ACF was supplied from variable-dc-link 800V which challenge for its design. Anyway, some findings are applicable to any ACF. An overview control ICs presented revealing that only two vendors have appropriate devices ICS. key-parts’ choic...

in this paper, a new robust controller based on geometric homogeneity and adaptive integral sliding mode is proposed for a class of second order systems. the upper bound of the system disturbances is not required. fully unknown parameters have been considered in the described model and its finite–time convergence to zero equilibrium point is proved. moreover, the controller is developed in the ...

in this paper, a new topology is proposed for three-phase to single-phase matrix converters, where more voltage levels are produced in the output in comparison with the conventional topologies. in addition, a new control method based on minimum error between the generated and the desired output voltages is proposed for three-phase to single-phase matrix converters. in the proposed control metho...