TITLE

Simulation and Analysis of Closed loop Control of Multilevel Inverter fed AC Drives

AUTHOR(S)
Jasmine, D.; Gopinat, M.
PUB. DATE
July 2014
SOURCE
Australian Journal of Basic & Applied Sciences;Jul2014, Vol. 8 Issue 10, p260
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Background: Performance of Multilevel inverter. Objective: The simulation results effectively controls the motor speed and enhances the drive performance.. Results: Closed-loop control scheme not only prevents further unbalancing of capacitor voltages but also takes corrective actions to bring back the capacitor voltages in the balanced state. Conclusion: The effectiveness of the proposed system is verified through simulation using MATLAB Simulink. This paper presents the simulation of three phase multilevel inverter fed induction motor using Simulink. Due to the presence of harmonics there is significant level of energy losses and poor quality of voltage and current. Generally the inverters with higher level can generate high quality voltage waveforms. The operating limitation of open-loop control scheme takes corrective action toward the existing unbalance in the dc-link-capacitor voltages. Similarly a simple closed-loop control scheme is based on the switching-state redundancy. Closedloop control scheme not only prevents further unbalancing of capacitor voltages but also takes corrective actions to bring back the capacitor voltages in the balanced state. The simulation results effectively controls the motor speed and enhances the drive performance. The effectiveness of the proposed system is verified through simulation using MATLAB Simulink.
ACCESSION #
97368488

 

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