Abstract

In this paper the three phase open end winding IM drive is designed and controlled using a fuzzy control based multilevel inverter with SVM technique is proposed. To overcome the disadvantages of PI controller, in this project we are using the fuzzy controller. The fuzzy controller rules are analyzed very easily, because of it is a human decision making system. The traditional dual inverter having two dc sources the cost and size is might be high, so to overcome this we use the proposed method with single dc voltage source. The main objective of the proposed method is to eliminate the transformer. To achieve the multilevel output voltage waveform with three levels a dc voltage ratio 2:1 is used. The space vector PWM is used to control the switching states of dual multilevel inverter. The fuzzy controller implementation cost is less and more precise. The simulation results are used to analyze the proposed method with fuzzy controller.

Highlights

  • Nowadays, the multilevel converters are used mostly in this world with these advantages. i.The output voltage waveform is achieved. ii.The distortions is reduced.iii

  • The traditional block diagram of OEW induction motor drive is shown in fig.[1]

  • The three level output voltage waveform is produced with 2:1 dc voltage ratio

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Summary

I.INTRODUCTION

The multilevel converters are used mostly in this world with these advantages. Multilevel converters are categorized into mainly three types. I.e the cascaded H-bridge, the flying capacitor and the diode point clamped multilevel inverter. The isolation transformer is used to attain the multilevel output voltage waveform. The primary goal of this paper is to remove the isolation transformer. The SVM is used to govern the capacitor voltage and eliminate the unwanted voltages. * Correspondence Author B.Nageswararao, Assistant Professor, Eee Department, Anurag Group.

II.PROPOSED METHOD
Introduction
IV.SIMULATION RESULTS
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