The purpose of this paper is to present an efficient converter circuit used to drive switched reluctance motors. It uses the C-dump topology in which the trapped energy in the phase windings is returned to the supply capacitor to be used in the following strokes. In addition to the C-dump topology, it uses two extra feedbacks. One comes from a governor mounted on the shaft of motor which contro...

This paper proposes a novel three phase nine-switch ac/ac converter topology with space vector pulse width modulation techniques for UPS applications. This converter features sinusoidal inputs and outputs, unity power factor and mainly a reduced Number of active switches. The SVPWM operating principle is elaborated. Simulation of three phase ac to ac converter with conventional method is evalua...

This thesis presents the theory, design, layout and a proposal for measurement set up of a synchronous DC-DC buck converter. This converter will be used as the supply modulator of power amplifier of mobile phones. The design is done using 45nm CMOS technology. Pmos and nmos switches are synchronously turns on and off for DC voltage conversion. Second order LC type filter is used to filter out t...

This paper presents a simple approach for implementation of a Space Vector Pulse Width Modulation (SVPWM) Technique for control of three phase Matrix Converter (MC) using MATLAB/Simulink & FPGA Software. The Matrix converter is a direct AC/AC Power conversion without an intermediate DC link. This converter is inherently capable of bi-directional power flow and also offers virtually sinusoidal i...

This paper presents first an overview of the wellknown voltage and current dc-link converter topologies used to implement a three-phase PWM ac–ac converter system. Starting from the voltage source inverter and the current source rectifier, the basics of space vector modulation are summarized. Based on that, the topology of the indirect matrix converter (IMC) and its modulation are gradually dev...

The controller is used to improve the dynamic performance of DC-DC converter by achieving a robust output voltage against load disturbances. This paper presents the performance of PI and Fuzzy controller for a phaseshifted zerovoltage switched full-bridge PWM (ZVS FBPWM) converters with a closed loop control. The proposed converter is regulated with minimum overshoot and good stability. In this...

Abstract— This paper proposes a new type of converter called Single Phase Z-source Matrix Converter (SPZMC). The SPZMC is an ac-to-ac converter device. Simulated using diode bridge bidirectional switch cell. The simulation is performed in different loads with fixed input and variable output frequency. Pulse Width Modulation (PWM) switching strategy is used to obtain the variable frequency. The ...

This chapter aims to give a general description of the basic features of a three phase to three phase matrix converter in terms of performance and of technological issues. This chapter does not require to the reader a special knowledge of the matrix converter technology. It is worth noting that the three phase to three phase configuration is just one of the possible direct AC-AC converter topol...

We present the formulation and experimental results of a new approach to designing internal mode converter reflectors for high-power gyrotrons. The method employs a numerical phase retrieval algorithm that reconstructs the field in the mode converter from intensity measurements, thus accounting for the true field structure in shaping the beam-forming reflectors. An outline for designing a four-...