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Proceedings ArticleDOI

Performance analysis of a multilevel inverter topology with reduced switches

E. Sravani, +1 more
- pp 1-5
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TLDR
A new multilevel inverter topology with reversing voltage component to improve the overall performance is proposed and requires less number of switches and carrier signals compared to other topologies so the overall cost and complexity of the circuit is reduced.
Abstract
Multilevel inverter is very effective in reducing the harmonics of AC waveform and useful for high power applications. Compared to the conventional two level inverters, it has many advantages such as higher dc link voltages, low electromagnetic interference and reduced harmonic distortion. But, it has some disadvantages such as usage of more switches, voltage balancing problem and complex pulse width modulation control. Overcoming these disadvantages, in this paper a new multilevel inverter topology with reversing voltage component to improve the overall performance is proposed. The proposed topology requires less number of switches and carrier signals compared to other topologies. Hence the overall cost and complexity of the circuit is reduced especially for higher output levels. The performance of a nine level proposed topology has been analyzed in terms of total harmonic distortion (THD) by using MATLAB/Simulink.

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References
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Proceedings ArticleDOI

Active Neutral-Point-Clamped Multilevel Converters

TL;DR: In this article, a multilevel power conversion concept based on the combination of neutralpoint-clamped (NPC) and floating capacitor converters is proposed, where the voltage balancing across the floating capacitors is achieved by using a proper selection of redundant switching states, and the neutral point voltage is controlled by the classical dc offset injection.
Journal ArticleDOI

A New Simplified Multilevel Inverter Topology for DC–AC Conversion

TL;DR: In this article, a new multilevel inverter topology using an H-bridge output stage with a bidirectional auxiliary switch was proposed, which produces a significant reduction in the number of power devices and capacitors required to implement a multilabel output.
Journal ArticleDOI

A Carrier-Based PWM Method With Optimal Switching Sequence for a Multilevel Four-Leg Voltage-Source Inverter

TL;DR: In this paper, the authors proposed a carrier-based PWM method for a multilevel four-leg PWM VSI along with introducing a novel offset voltage, which makes it possible for the switching sequence of all the legs to be optimized for minimizing the harmonic distortion of the output voltage irrespective of the number of inverter levels.
Journal ArticleDOI

Application of Balancing Circuit for DC-Link Voltages Balance in a Single-Phase Diode-Clamped Inverter With Two Three-Level Legs

TL;DR: Investigations of dc-link voltages balance with the use of a passive RLC circuit in a single-phase diode-clamped inverter composed of two three-level legs and mathematical analysis of the PWM modulation method and the inverter operation are presented.
Journal ArticleDOI

An Optimized Switching Strategy for Quick Dynamic Torque Control in DTC-Hysteresis-Based Induction Machines

TL;DR: The main benefit of the proposed dynamic overmodulation strategy is its simplicity, since it only requires a minor modification to the conventional DTC-hysteresis-based structure and does not require a space vector modulator.
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