A New topology of Single-Phase Seven-Level Inverter with Less Number of Power Elements for Grid Connection
G. Gopal1, B. Shankaraiah2, M.Chinnalal3, K. Lakshmi Ganesh4, G. Satyanarayana5, D. Sreenivasa Naik6
1DG. Gopal, Department of Electrical & Electronics Engineering, TKR College of Engineering & Technology, Meerpet, Saroornagar (Telangana), India.
2B.Shankaraiah, Associate Professor, Department of Electrical & Electronics Engineering, TKR College of Engineering & Technology, Meerpet, Saroornagar, (Telangana), India.
3M.Chinnalal, Assistant Professor, Department of Electrical & Electronics Engineering, TKR College of Engineering & Technology, Meerpet, Saroornagar (Telangana), India.
4K.Lakshmi Ganesh, MIAEME, Assistant Professor, Department of Electrical & Electronics Engineering, Vishnu Institute of Technology, Vishnupur, Bhimavaram (A.P), India.
5G.Satyanarayana, M.Tech, PGDBM, School of Management Studies, University of Hyderabad (Telangana), India.
6Daravath Sreenivasa Naik, Assistant Professor, Department of Electrical & Electronics Engineering, Adams Engineering College, Paloncha, Khammam (A.P), India.
Manuscript received on 10 September 2013 | Revised Manuscript received on 19 September 2013 | Manuscript Published on 30 September 2013 | PP: 79-84 | Volume-3 Issue-4, September 2013 | Retrieval Number: D1188093413/13©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Recently, the evolution of single phase multilevel inverters has been escalation due to its preference over traditional one. In this paper proposed a new topology of single phase seven level inverter with less number of power elements for grid connection. In this proposed inverter have eight switches and their switches operate with fundamental frequency. The proposed inverter produced seven level output voltage from two input voltage sources. The proposed inverter reduced the switching losses (because of all switches operate with fundamental frequency), complexity, control circuit and place requirement. The proposed inverter compared to a single-phase five level pulse width modulation (PWM) inverter for grid connection. The proposed inverter compared to conventional inverter has PWM technique have two triangular carrier signals identical to each other with an offset equivalent to the amplitude of the reference signal were used to generate PWM signals for the switches. The proposed inverter compared to conventional inverter has some switches operate at fundamental frequency and other operates at switching frequency.
Keywords: Multilevel Inverters, Grid Connection, Pulse Generation, PWM.
Scope of the Article: Grid Networking/ Computing