Skip to main content

Comparative Study of Modelling Techniques for Transformerless Three Phase NPC Inverter to Eliminate Harmonic in PV System

Volume 4 Issue 3 June - August 2016

Research Paper

Comparative Study of Modelling Techniques for Transformerless Three Phase NPC Inverter to Eliminate Harmonic in PV System

Romi Choudhary*, A.N. Tiwari**
* PG Scholar, Department of Electrical Engineering, MMMUT, Gorakhpur, Uttar Pradesh, India.
** Associate Professor, Department of Electrical Engineering, MMMUT, Gorakhpur, Uttar Pradesh, India.
Choudhary, R., and Tiwari, A.N. (2016). Comparative Study of Modelling Techniques for Transformerless Three Phase NPC Inverter to Eliminate Harmonic in PV System. i-manager’s Journal on Circuits and Systems, 4(3), 15-23.https://doi.org/10.26634/jcir.4.3.8220

Abstract


The main objective of this paper is the proposal of new modulation techniques for three phase transformerless neutral point clamped inverters to eliminate harmonics in photovoltaic systems without requiring any modification on the multilevel inverter or any additional hardware. The modulation techniques are capable of reducing the harmonics in photovoltaic systems by applying PWM (Pulse Width Modulation) and SVPWM (Space Vector Pulse Width Modulation) or converter. A multilevel power conversion concept is based on the combination of Neutral-Point -Clamped (NPC) and floating capacitor converters. In the proposed scheme, the voltage balancing across the floating capacitors is achieved by using a proper selection of redundant switching states, the input source is PV System. The output voltage waveforms in neutral point clamped inverters can be generated at low switching frequency losses with high efficiency and low distortions. This paper presents the switching pattern to generate symmetrical gating signal to control NPCVSI (Neutral Point Clamp Voltage Source Inverter) using matlab/simulink.

Comments

Post a Comment

Popular posts from this blog

Continuous Overvoltage Characteristics of Surge Protected Power Strips

Volume 5 Issue 4 September - November 2017 Research Paper Continuous Overvoltage Characteristics of Surge Protected Power Strips Cengiz Polat* Assistant Professor, Department of Electrical and Electronics Engineering, Istanbul University, Istanbul, Turkey. Uzunoglu, C. P. (2017). Continuous Over Voltage Characteristics of Surge Protected Power Strips.  i-manager’s Journal on Circuits and Systems,  5(4), 1-7.  https://doi.org/10.26634/jcir.5.4.13938 Abstract Increasing applications of constantly developing electronic devices require delicate voltage and current protection. Although the electrical network is monitored continuously, undesired over currents and over voltages may occur on the distribution system due to failures. Most of the electronic switch gear is connected via surge protected power strips in indoor applications, where current protection is vital. Surge protected power strips are usually manufactured based on Metal Oxide Varistors (MOVs) ...
Post a Comment
Read more

Reduced Wirelength-Based Low Power Performance of Multibit Flip-Flop

Volume 1 Issue 4 September - November 2013 Research Paper Reduced Wirelength-Based Low Power Performance of Multibit Flip-Flop M.Karthick*, S. Vijayakumar** *PG Scholar, Department of Electronics and Communication Engineering, Paavai Engineering College, Namakkal, India. **Associate Professor, Department of Electronics and Communication Engineering, Paavai Engineering College, Namakkal, India. Karthick, M. and Vijayakumar, S. (2013). Reduced Wire length-Based Low Power Performance Of Multibit Flip-Flop.  i-manager’s Journal on Circuits and Systems , 1(4), 22-26.  https://doi.org/10.26634/jcir.1.4.2593 Abstract Power reduction is a main parameter to design VLSI circuits. In this paper, to design a number of D-flip flop performing at the same time, the given clock signal is reduced using multi bit flip-flop. The multi bit flip flop is mainly used to improve the clock power for the given common clock signal and to reduce the switching power. This method is p...
Post a Comment
Read more

A Review on Control strategies for LFC in Deregulated Scenario

Volume 1 Issue 1 December - February 2013 Review Paper A Review on Control strategies for LFC in Deregulated Scenario T. Anilkumar*, N. Venkata ramana** * Associate Professor, EEE Department, ACE Engineering College, Ghatkesar, Hyderabad, AP, India. ** Professor and Head of Deportment, EEE Department, JNTU Mantini, AP, India. Kumar, T. A., and Ramana, N., (2013). A Review On Control Strategies For LFC In Deregulated Scenario.  i-manager’s Journal on Circuits and Systems , 1(1), 27-36.  https://doi.org/10.26634/jcir.1.1.2197 Abstract In power system studies, Load frequency control is an important issue to supply sufficient and reliable electric power with good quality. The main objective of LFC is to maintain load frequency and tie-line power flow within permissible limits by adjusting megawatt output of LFC generators, so as to accommodate fluctuating load demands. This paper presents a brief review of different control techniques to researchers on design...
Post a Comment
Read more