Raghavendra Reddy Karasani
Sreenidhi Institute of Science and Technology
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Raghavendra Reddy Karasani.
IEEE Transactions on Power Electronics | 2017
Raghavendra Reddy Karasani; Vijay B. Borghate; Prafullachandra M. Meshram; Hiralal M. Suryawanshi; Sidharth Sabyasachi
This paper presents a three-phase hybrid cascaded modular multilevel inverter topology which is derived from the proposed modified H-bridge module. This topology results in the reduction of number of power switches, losses, installation area, voltage stress and converter cost. For renewable energy environment such as photovoltaic (PV) connected to the microgrid system, it enables the tranformerless operation and enhances the power quality. This multilevel inverter is an effective and efficient power electronic interface strategy for renewable energy systems. The basic operation of single module and the proposed cascaded hybrid topology is explained. The ability to operate in both symmetrical and asymmetrical modes is analyzed. The comparative analysis is done with classical cascaded H-bridge and flying capacitor multilevel inverters. The nearest level control method is employed to generate the gating signals for the power semiconductor switches. To verify the applicability and performance of the proposed structure in PV renewable energy environment, simulation results are carried out by MATLAB/Simulink under both steady-state and dynamic conditions. Experimental results are presented to validate the simulation results.
Journal of Power Electronics | 2016
Raghavendra Reddy Karasani; Vijay B. Borghate; Prafullachandra M. Meshram; Hiralal M. Suryawanshi
In this paper, a single phase modified switched-diode topology for both symmetrical and asymmetrical cascaded multilevel inverters is presented. It consists of a Modified Switched-Diode Unit (MSDU) and a Twin Source Two Switch Unit (TSTSU) to produce distinct positive voltage levels according to the operating modes. An additional H-bridge synthesizes a voltage waveform, where the voltage levels of either polarity have less Total Harmonic Distortion (THD). Higher-level inverters can be built by cascading MSDUs. A comparative analysis is done with other topologies. The proposed topology results in reductions in the number of power switches, losses, installation area, voltage stress and converter cost. The Nearest Level Control (NLC) technique is employed to generate the gating signals for the power switches. To verify the performance of the proposed structure, simulation results are carried out by a PSIM under both steady state and dynamic conditions. Experimental results are presented to validate the simulation results.
Electric Power Components and Systems | 2017
Raghavendra Reddy Karasani; Vijay B. Borghate; Sidharth Sabyasachi; Hiralal M. Suryawanshi; Prafullachandra M. Meshram
Abstract In this paper, a single-phase cascaded multi-level inverter topology is proposed. It is basically developed from a modified H-bridge module. This topology reduces the switch count, the gate drive requirement, and voltage stress. The significant advantages of the proposed inverter are modular structure, simpler control, and lower number of switches. The Nearest Level Control algorithm is employed to generate the gating signals for the power switches. To verify the performance of the proposed structure, simulation results are carried out by MATLAB (The MathWorks, Natick, Massachusetts, USA)/SIMULINK. Experimental results are presented to validate the simulation results.
Arabian Journal for Science and Engineering | 2018
Hemanth Kumar Busireddy; Makarand M. Lokhande; Raghavendra Reddy Karasani; Vijay B. Borghate
International Journal of Circuit Theory and Applications | 2018
Santosh Kumar Maddugari; Vijay B. Borghate; Raghavendra Reddy Karasani; Sidharth Sabyasachi; Hiralal M. Suryawanshi
Arabian Journal for Science and Engineering | 2018
Santosh Kumar Maddugari; Vijay B. Borghate; Raghavendra Reddy Karasani; Sidharth Sabyasachi; Hiralal M. Suryawanshi
ieee region 10 conference | 2017
Sidharth Sabyasachi; Vijay B. Borghate; Santosh Kumar Maddugari; Raghavendra Reddy Karasani
IEEE Access | 2017
Sidharth Sabyasachi; Vijay B. Borghate; Raghavendra Reddy Karasani; Santosh Kumar Maddugari; Hiralal M. Suryawanshi
2017 National Power Electronics Conference (NPEC) | 2017
Sidharth Sabyasachi; Vijay B. Borghate; Santosh Kumar Maddugari; Raghavendra Reddy Karasani
2017 National Power Electronics Conference (NPEC) | 2017
Raghavendra Reddy Karasani; Sidharth Sabyasachi; Vijay B. Borghate; Santosh Kumar Maddugari