A power electronic converters are becoming more and more popular for medium voltage & high power applications. To overcome the limitation of semiconductors current and voltage ratings in high power applications, multilevel inverter is often considered an effective solution. In addition, stepped waveform in the output of multilevel inverter has better harmonic spectrum than 2-level inverter in l...

This paper presents a switching strategy for multilevel cascade inverters, based on the space-vector theory. The proposed high-performance strategy generates a voltage vector across the load with minimum error with respect to the sinusoidal reference. In addition, it generates very low harmonic distortion operating with reduced switching frequency, without the use of traditional sinusoidal puls...

scheme proposed here makes the individual inverter A space vector PWM technique is developed based switching frequency equal to half of the motor phase on the combination of space vectors from dual inverters switching frequency. %is results in low inverter switching feeding the induction motor from both ends (open-end with reduced power circuit complexity when compared to winding without neutra...

In this paper, a simplified space–vector pulse width modulation technique for multilevel inverters is proposed. This method is based on the simplification of the space–vector diagram of a five level inverter into that of a three level inverter. In turn, the three level inverter space vector diagram is simplified into that of two level inverter. Hence, the algorithm of five level space-vector pu...

In this work, initially a new topology for sub multilevel inverter is introduced and then series connection of the sub multilevel inverters is developed as a generalized fifteen level multilevel inverter. This multilevel inverter has been analyzed in asymmetric conditions with different values of DC sources. This new multilevel inverter topology has the advantage of reduced number of switches c...

The rapid evolution of renewable energy within the last several years has resulted in the design of efficient power converters appropriate for medium and high-power applications such as wind turbine and photovoltaic (PV) systems. A new group of multilevel inverters has introduced as a solution for working with higher voltage levels. Besides this important feature, multilevel converters have the...

In this paper proposed a new topology for cascaded multi level inverters. This structure consists of series connection of proposed basic unit blocks which are built with both unidirectional and bidirectional switches. The proposed structure has some advantages including: reduction in the number of switches and driver circuits, cost and installation area. Three algorithms for determination of dc...

PWM Inverters in induction motor drives are known to cause common-mode voltage which results in leakage current flowing through the parasitic capacitors to the ground and creates drawbacks such as shaft voltage, bearing current, electromagnetic interference problems. CMV elimination using conventional Three-level NPC multilevel topology has certain drawbacks. An improved SVPWM strategy using Du...

This paper focuses on developing a low cost and a low harmonic traditional three level inverter (H-Bridge) using pulse pattern. Multilevel inverter as compared to traditional three level inverters have advantages like low harmonic contents and low electromagnetic interference (EMI) outputs and can operate on several voltage levels. The drawbacks includes: The requirement of isolated power suppl...

Multilevel inverters have been opted for high power applications due to reduced harmonic distortion, less device voltage stress and modular structure. This work proposes new modified hybrid Hbridge multilevel inverter using auxiliary switch. This proposed inverter produces five levels output with five power devices and clamping diodes as a phase voltage and nine levels as a line voltage.The lev...