High-performance analog-to-digital converters, digital-to-analog converters, and fractionalfrequency synthesizers based on delta–sigma ( ) modulation—collectively referred to as data converters—have contributed significantly to the high level of integration seen in recent commercial wireless handset transceivers. This paper presents a tutorial on data converters and their uses and implications ...

This paper presents a study on recent developments in dc-dc converters. All the converters are derived based on the two basic converters such as buck converter and boost converter. The aims of developing the converters are high efficiency and high gain with fast response. Today’s world demands the low power application devices which is the focus of the researchers. There are so many parameters ...

The revolution in power electronics has opened an era for widespread use of power converters of different power rating from few Watts to Mega-Watts. AC-DC converters are most widely used power converters as the distributed electric power is AC supply, while the applications based on DC supply as well as variable frequency AC supply, need conversion of AC supply into DC supply. Large current har...

This paper presents a novel control method to improve the efficiency of low-voltage DC-DC converters at light loads. Pulse Width Modulation (PWM) converters have poor efficiencies at light loads, while pulse frequency modulation (PFM) control is more efficient for the same cases. Switching losses constitute a major portion of the total power loss at light loads. To decrease the switching losses...

AbstructMultilevel voltage source converters are emerging as a new breed of power converter options for high-power applications. The multilevel voltage source converters typically synthesize the staircase voltage wave from several levels of dc capacitor voltages. One of the major limitations of the multilevel converters is the voltage unbalance between different levels. The techniques to balanc...

In this paper we consider the problem of allocating optical bandwidth on a tree-shaped network when wavelength conversion is allowed. We consider both converters with full conversion capabilities and converters with limited capabilities. We give upper and lower bounds on the number of full wavelength converters necessary to fully utilize the optical bandwidth available. For converters of limite...

This paper presents a review on the application of back-to-back converters in the field of permanent magnet synchronous generator (PMSG)-based wind energy conversion systems (WECS). The wide applications of the back-to-back converters are power conditioning devices, micro grid, high voltage direct current (HVDC), and renewable energy systems. The intention is to present an overview about the de...

Resonant converters are one of the most exciting power supply topologies. These converters are popular for many applications because the performance increases power efficiency, minimizes components count, and reduces Electromagnetic Interference (EMI) over older power supply topologies. Soft switching is the representative feature of resonant converters. However, use of the body diode in resona...

This paper presents the different power converters for grid integration of wind power systems. In wind power systems while integrating with grid, power quality issues are becoming more predominant. This can solve by using power electronics converters like two level back to back converter and matrix converters. Converters are compared on the basis of efficiencies, voltage conversion ratios and T...

Resonant converters are one of the most exciting power supply topologies. These converters are popular for many applications because the performance increases power efficiency, minimizes components count, and reduces Electromagnetic Interference (EMI) over older power supply topologies. Soft switching is the representative feature of resonant converters. [1][2] However, use of the body diode in...