Improved Transformer-Based Full-Bridge Inverter

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
  
© 2014 by IJETT Journal
Volume-9 Number-8                          
Year of Publication : 2014
Authors : M.Karuppiah , M.Saniyasirao , K.Karthikumar
  10.14445/22315381/IJETT-V9P272

MLA 

M.Karuppiah , M.Saniyasirao , K.Karthikumar. "Improved Transformer-Based Full-Bridge Inverter", International Journal of Engineering Trends and Technology (IJETT), V9(8),369-374 March 2014. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

Abstract

The paper presents a improved transformer-based full-bridge inverte. A capacitive full-bridge circuit is added to provide instant current under non-linear load condition and thereby reducing the harmonics significantly even under non-linear load condition. The redundant capacity, cost, size and weight of line frequency transformer can therefore be dramatically reduced. Moreover, a new integrated controller for inverter control is proposed to eliminate both DC current component and steady state error even under heavy load condition. The proposed integrated controller consists of a Fuzzy logic controller acts as voltage controller, DC offset canceller, an RMS compensator and non-linear load compensator. The results derived from a DSP-based inverter system and model was simulated using MATLAB/ SIMULINK software.Also the waveforms of voltage, current, harmonics, DC offset voltage are obtained.

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Keywords
Inverter, Line frequency transformer, Voltage harmonics, Fuzzy Logic Controller, Voltage Controller, DC Offset Canceller, RMS Compensator, Non Linear Load Compensator.