This paper includes modeling and simulation of 180 MW units of pumped storage power plant with Variable speed machines. In this method, voltage source inverters are used instead of traditional cyclo-converters. This paper aims to control the voltage source inverters and maintain DC voltage at a constant value. AC/ DC/ AC converter is used in system configuration structure in order to control an...

In this paper, Performance of three-level integrated ac–dc converter with Hysteresis Current Control Technique is presented. The proposed converter combines with the operation of the boost power factor correction and the three-level dc–dc converter. By the implementation of Hysteresis Current controller, the switching sequence is under controlled condition and the output voltage of the proposed...

A CMOS Current-mode DC-DC converter using a quadratic slope compensation scheme is presented. The use of a quadratic slope instead of a conventional linear slope makes a damping factor and a frequency bandwidth of a current feedback loop independent of the converter’s output voltage. Further designing the coefficient of the quadratic slope to be fully dependent of the input voltage, the damping...

In this paper, a comparative analysis on the bifurcative and chaotic behaviour of a current controlled buckboost converter with soft switching and hard switching is performed. The electromagnetic interference generated during hard switching and soft switching of the converter is analyzed. Simulation and measured results show that the total energy is more evenly spread over the frequency band du...

This paper introduces a digitally performed current mode and voltage control for the dc-dc step down converter based on voltage to frequency converter where the average values of inductor current and output voltage are obtained. These current and voltage measurement are realized by the voltage control oscillator (VCO) and counters (digital integrator). Such an approach enables full digitalizati...

In this paper, a single stage bidirectional converter operated in AC to DC and DC to AC modes with a singleloop bidirectional current sensor-less control(BCSC) is proposed. This full-bridge ac/dc converter considers both the inductor resistance and conduction voltage drops for accurate representation of model. This converter is utilized in renewable energy system where Dc side a PV system is em...

A hybrid alternate current/direct current (AC/DC) microgrid consists of an AC subgrid and a DC subgrid, and the subgrids are connected through the interlink bidirectional AC/DC converter. In the stand-alone operation mode, it is desirable that the interlink bidirectional AC/DC converter manages proportional power sharing between the subgrids by transferring power from the under-loaded subgrid t...

The paper analyzes the impact of the component losses on the efficiency of the novel DC/DC converter. The converter is a combination of the quazi-Z-source (qZS) network and dual active bridge (DAB). In the analysis the mathematical loss models of the proposed DC/DC converter are derived and efficiency is estimated. Eventually the efficiency is verified experimentally.

This paper introduces a novel Bi-directional DC-DC converter with artificial neural network controller (ANN).Bidirectional power flow is obtained by the same power components and provides a simple, efficient, and galvanically isolated converter. In the presence of DC mains the converter operates as buck converter and charges the battery. When the DC main fails, the converter operates as boost c...

The importance of energy-constrained processors continues to grow especially for ultra-portable sensor-based platforms for the Internet-of-Things (IoT). Processors for these IoT applications primarily operate at near-threshold (NT) voltages and have multiple power modes. Achieving high conversion efficiency within the DC–DC converter that supplies these processors is critical since energy consu...