Design and Analyses of a PWM based Seven Level CascadeCombination Inverter

Subject Areas : journal of Artificial Intelligence in Electrical Engineering

Mortaza Sefidi ¹ , Mehdi Jarahi ²

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Received: 2016-02-21 Accepted : 2016-02-21 Published : 2016-02-01

Keywords: : Inverter, Cascade hybrid, Pulse with Modulation, Seven LevelsB. Wu, (2006). High-Power Converters and AC Drives. New York: IEEE Press/Wiley Interscience. [2] H. Abu-Rub, J.Holtz, J.Rodriguez and G. Baoming (2010). Medium-Voltage Multilevel Converters- State of the Art, Challenges and Requirements in Industrial Application. IEEE Transactions on Industrial Electronics, Vol.57, No.8, pp.2581-2596,

Abstract :

Multilevel Inverters has big placement advantages in Power Electronics and its application can be mentioned to FACTS tools such as UPFC – D-STATCOM. Therefore, nowadays Multilevel Inverters have created vast field’s research and researchers are trying to present appropriate structures with fewer keys and greater advantages. The main advantages of Multilevel Inverters mentioned are low-key voltage stress and low harmonic content of the output voltage. Multilevel Inverters, having many advantages, can be referred to have low volume, low EMI, low losses and high efficiency. In this study, all equations dominating the circuit have been investigated and main and effective parameters have been identified in suggested Invertors and this method has been extended for use in n levels Invertors. Then it has investigated the changes possibility in the Invertors’ structure aiming to reduce dc voltage and to increase the number of output voltage levels. The results of simulations have emphasized the suggested structures.

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