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Journal : Indonesian Journal of Electrical Engineering and Computer Science

Hardware Implementation of Cascaded Hybrid Multilevel Inverter with Reduced Number of Switches Chinnapettai Ramalingam Balamurugan; S.P. Natarajan; T.S. Anandhi; R. Bensaraj
Indonesian Journal of Electrical Engineering and Computer Science Vol 3, No 2: August 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v3.i2.pp314-322

Abstract

This paper presents the comparison of various multicarrier Pulse Width Modulation (PWM) techniques for the Cascaded Hybrid Multi Level Inverter (CHBMLI). Due to switch combination redundancies, there are certain degrees of freedom to generate the five level AC output voltage. This paper presents the use of Control Freedom Degree (CFD) combination. The effectiveness of the PWM strategies developed using CFD are demonstrated by simulation and experimentation.  The simulation results indicate that the chosen five level inverter triggered by the developed Phase Disposition(PD), Phase Opposition and Disposition(POD), Alternate Phase Opposition and Disposition (APOD), Carrier Overlapping (CO), Phase Shift (PS) and Variable Frequency (VF) PWM strategies developed are implemented in real time using FPGA. The simulation and experimental outputs closely match with each other validating the strategies presented.
A Nine Level Cascaded Multi Level Inveter Using Embedded and FlipFlops Chinnapettai Ramalingam Balamurugan; S.P. Natarajan; T.S. Anandhi; B. Shanthi
Indonesian Journal of Electrical Engineering and Computer Science Vol 15, No 1: July 2015
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This paper proposes a nine level cascaded multilevel inverter based on the flip flops and logic gates. Generally multilevel inverter is used to achieve the high power by using a series of power semiconductor switches with the several dc voltage sources which is used to perform the power conversion. In this paper the flip flop based CMLI is compared with the conventional CMLI. The flip flops and logic gates are used to create logic equation for the each switch of the CMLI by using the switching states. This proposed topology is mainly used to reduce the total harmonic distortion and also increase the performance of the system. DOI: http://dx.doi.org/10.11591/telkomnika.v15i1.7978
Z–Source Multilevel Inverter Based on Embedded Controller K. Vijayalakshmi; Chinnapettai Ramalingam Balamurugan
Indonesian Journal of Electrical Engineering and Computer Science Vol 6, No 1: April 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v6.i1.pp1-8

Abstract

In this paper Embedded based Z-source multilevel inverter (ZSMLI) is proposed. This work implements a five level cascaded H-bridge Z-source inverter by using embedded control. Switching devices are triggered using embedded controller. In this controller coding is described by using switching table. The presence of Z-source network couples inverter main circuit to the power source that providing special features that can overcome the limitations of VSI (voltage source inverter) and CSI (current source inverter). The Z-source concept can applicable in all dc-ac, dc-dc, ac-dc and ac-ac power conversions. Simulation model of Z-source multilevel inverter based on embedded controller has been built in MATLAB/SIMULINK. The Performance parameters of Z-source MLI such as RMS (root mean square) output voltage, THD (total harmonic distortion) and DC component have been analysed for various inductance (L) and capacitance (C) value.
Performance Evaluation of 3Φ Asymmetrical MLI with Reduced Switch Count Chinnapettai Ramalingam Balamurugan; S.P. Natarajan; T.S. Anandhi
Indonesian Journal of Electrical Engineering and Computer Science Vol 3, No 3: September 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v3.i3.pp671-680

Abstract

The multi level inverter system is habitually exploited in AC drives, when both reduced harmonic contents and high power are required. In this paper, a new topology for three phase asymmetrical multilevel inverter employing reduced number of switches is introduced. With less number of switches, the cost, space and weight of the circuit are automatically reduced. This paper discusses the new topology, the switching strategies and the operational principles of the chosen inverter. Simulation is carried out using MATLAB-SIMULINK. Various conventional PWM techniques that are appropriate to the chosen circuit such as PDPWM, PODPWM, APODPWM, VFPWM and COPWM are employed in this work. COPWM technique affords the less THD value and also affords a higher fundamental RMS output voltage.
A Review on Modulation Strategies of Multi Level Inverter Chinnapettai Ramalingam Balamurugan; S.P. Natarajan; R. Bensraj; B. Shanthi
Indonesian Journal of Electrical Engineering and Computer Science Vol 3, No 3: September 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v3.i3.pp681-705

Abstract

This review develop different switching methods for Multi Level Inverter (MLI). The switching methods proposed in this paper are to compare various methods and to predict exact switching method for different application based upon its quality of the outputs.  The performance of the inverter is analyzed with the parameters like THD (Total Harmonic Injection), VRMS (fundamental), CF (Crest Factor), FF (Form Factor) and DF (Distortion Factor). From the various non PWM (Pulse Width Modulation) and PWM methods the analysis are method to identify the exact PWM strategies for specific applications.