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An Operation and Design of 3-Phase 3-Level T-Type Multilevel Inverter for Different PWM Techniques

Devkant Sharma, Anurag Mondal


The basic idea of a multilevel converter to accomplish higher power is to utilize a progression of intensity semiconductor switches with a few lower voltage dc sources to play out the power change by blending a staircase voltage waveform. Multilevel inverter has an ability to expand the yield voltage and execution with low exchanging misfortunes and aggregate symphonious mutilation as the level builds the consonant itself diminishes. This study proposed a 3-phase 3-level T-type inverter with various SPWM strategies having less number of devices which possess high and low power region as compared to conventional inverter. Generally, it is used for low power appliances having maximum efficiency. A 3-phase 3-level T-type inverter was implemented in the Simpower system tool MATLAB/SIMULINK with various SPWM strategies as PD, POD, APOD and its switching on/off pattern of IGBTs.

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Daher S, Schmid J, Antunes FLM. Multilevel inverter topologies for stand-alone PV systems. IEEE Trans. Ind. Electron. 2008; 55 (7): pp. 2703–2712p.

Hemant Joshi, Tekwani PN, Amar Hinduja Kolorrol. Multilevel Inverter for Induction Motor Drives Using RV Topology. IEEE Trans. Ind. 2010.

Jang-Hwan K, Sul S-K, Enjeti PN. A carrier-based PWM method with optimal switching sequence for a multilevel four-leg voltage source inverter. IEEE Trans. Ind. Appl. 2008; 44 (4): 1239–1248p.

Yuan X, Barbi I. Fundamentals of a New Diode Clamping Multilevel Inverters. IEEE Transaction Power Electron. 2000; 15 (4): 711–718p.

Jose Rodriguez, Jih-Sheng Lai, Fang Zheng Peng. Multilevel inverters: a survey of topologies, controls and applications. IEEE Trans. Ind. Electronics. 2002; 49 (4): 724–738p.

Babaei E. Optimal topologies for cascaded sub-multilevel converters. Power Electron. 2010; 10 (3): 251–261p.

Nabe, Takahashi I, Akagi H. A new neutral point clamped PWM inverter. IEEE Trans. Ind. Applicat. 1981; 1A-17: 518–523p.

Najafi E, Yatim AHM, Samosir AS. A new topology-reversing voltage (RV) for multi-level inverters. 2nd International conference on power and energy (PECon 08), pp 604-608, December 2008 Malaysia.

Radan A, Shahirinia AH, Falahi M. Evaluation of carrier based PWM methods for multi-level inverters. In: Proc. IEEE ISIE, 2007, pp. 389–394.

Ehsan Najafi, Abdul Halim Mohamed Yatim. Design and implementation of a new multilevel inverter topology. IEEE Transactions on Industrial Electronics. 2012; 59 (11).

Jacob James Nedumgatt, Vijayakumar D, Kirubakaran A, Umashankar S. A multilevel inverter with reduced number of switches. IEEE Students’ Conference on Electrical, Electronics and Computer Science 2012.

Napaphat Lekgamheng, Yuttana Kumsuwan. Phase-Shifted PWM Strategy of a Seven-level Single-Phase Current Source Inverter For Grid-Connection Systems. IEEE Trans. Ind. Appl.


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