The paper presents soft switching PWM DC-DC converters using power MOSFETs and IGBTs. The attention is focused mainly on the full-bridge converters suitable for high power applications. The properties of the PWM converters are described in comparison to other categories of soft switching converters. An overview of the switching techniques using in the DC-DC converters is included. Consideration...

The hybrid AC-DC microgrid (HMG) architecture has the merits of both DC and AC coupled structures. Microgrids are subject to intermittence when the renewable sources are used. In the HMG, since power fluctuations occur on both subgrids due to varying load and unpredictable power generation from renewable sources, proper voltage and frequency regulation is the critical issue. This article propos...

In emerging nations like India, the use of energy is rising quickly over time. The moment opportune to rely increasingly on renewable sources, such as solar photovoltaic, satisfy demand. Mobile communication towers are one industries with highest power consumption rates, and a lot these situated rather distant from grid. This research develops performance investigation photovoltaic system for m...

This research presents a non-isolated multi-port power converter feasible to hybridize energy alternatives in electric vehicles. Due the hybridization of various input sources, there are several advantages load distribution system. Flexible control discharging as well charging process concerning sources can be achieved. The developed able boost voltage levels with dual inputs such renewable sol...

This paper addresses the optimal location and sizing of photovoltaic (PV) sources in isolated direct current (DC) electrical networks, considering time-varying load renewable generation curves. The mathematical formulation this problem corresponds to mixed-integer nonlinear programming (MINLP), which is reformulated via convex optimization: ensures global optimum solving resulting optimization ...

A new general cascaded multilevel inverter using developed H-bridges is proposed. The proposed topology requires a lesser number of dc voltage sources and power switches and consists of lower blocking voltage on switches, which results in decreased complexity and total cost of the inverter. These abilities obtained within comparing the proposed topology with the conventional topologies from afo...

The distributed energy sources are commonly used small energy generating sources. Combination of these small energy sources will form microgrid in an interrelated manner to provide a required amount of demand power management. A grid connected PV system consist of solar panels, batteries with back up in case of emergencies, DC-DC converters, Maximum power point tracker (MPPT) and Demand power m...

In recent years, DC microgrid has attracted considerable attention of the research community because of the wide usage of DC power-based appliances. However, the acceptance of DC microgrid by power utilities is still limited due to the issues associated with the development of a reliable protection scheme. The high magnitude of DC fault current, its rapid rate of rising and absence of zero cros...

Abstract With the increasing shortage of traditional energy resources, new resources such as fuel cells are widely used. However, front-end output voltage power generation systems is low, which cannot directly supply to load. Therefore, an efficient DC converter with a high boost ratio needed raise required level. The staggered parallel has characteristics small input current ripple and gain, v...