The penetration of renewable energy in modern power system, microgrid has become a popular application worldwide. In this paper bidirectional converters for AC and DC hybrid microgrid application are proposed as an efficient interface. To reach the goal of bidirectional power conversion, both rectifier and inverter modes are analyzed. In order to achieve high performance operation and single-ph...

We have developed a new isolated AC/DC converter for electric vehicle on-board chargers. It consists of an AC/DC converter with Gradationally Controlled Voltage Inverter (GCVI AC/DC converter) and an isolated Zero-Voltage-Switching (ZVS) DC/DC converter, each of which is optimally controlled to convert in a highly efficient means. As a result, the new on-board charger has achieved a power conve...

Power quality (PQ) problems for renewable energy system (RES) is major challenge using these systems. Amplitude, frequency, and waveform important PQ parameters especially standalone or isolated In this paper we propose RES with wind turbine (WT) permanent magnet synchronous generator (PMSG) to feed different loads (liner, non-liner) through AC-DC-AC converter. The PMSG operate fuzzy logic iner...

An impedance-source (or impedance-fed) power converter (abbreviated as Z-source) and its control method for implementing dc-to-ac, ac-to-dc, ac-to-ac, and dc-to-dc power conversion are presented in this paper. This impedance converter employs a unique impedance network (or circuit) to couple the converter main circuit to the power source, hence provides a unique feature that cannot be obtained ...

A monolithic CMOS voltage-mode, boost DC-DC converter with integrated power switches and on-chip pulse-width modulation (PWM) technique of switching control is presented in this paper. The PWM scheme used in this converter is constructed by a CMOS ring oscillator, whose duty is compensated by a pseudo hyperbola current generator to achieve almost constant frequency operation. The proposed boost...

The article presents an induction generator connected to the power grid using AC/DC/AC converter and LCL coupling filter. Three-level inverters were used in converter, both from side side. algorithm realizing Pulse Width Modulation (PWM) has been simplified maximum. Control of was based on Direct Field-Oriented (DFOC) method. At same time, voltage control for this solution. MPPT extended includ...

Pulse width modulation (PWM) converters are frequently used due to unity power factor operation with reduced total harmonic distortion (THD) at ac mains and also provide constant-regulated dc output voltage even under fluctuations of ac voltage and dc load. This paper contains the harmonics analysis of sinusoidal PWM (SPWM) technique and space vector PWM (SVPWM) technique for three-phase AC to ...

--------------------------------------------------------------ABSTRACT------------------------------------------------------This paper deals with modelling and simulation of high step up DC – AC converter with micro source at the input. The 15V DC is stepped up to 230V DC using high step up DC-DC Converter. This DC is converted into AC using a single phase inverter. The DC-AC converter system i...

this paper presents a detailed small-signal and transient analysis of a full bridge pwm dc-dc converter designed for high voltage, high power applications using an average model. the derived model is implemented in a typical system and used to produce the small-signal and transient characteristics of the converter. results obtained in the analysis of the high voltage and high power design examp...