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All Journal International Journal of Applied Power Engineering (IJAPE)
Balamurugam, C. R.
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Electrical & Electronics Engineering

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MULTILEVEL INVERTER FED INDUCTION MOTOR DRIVE FOR POWER FACTOR CORRECTION Balamurugam, C. R.
International Journal of Applied Power Engineering (IJAPE) Vol 10
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijape.v10.i1.pp%p

Abstract

Multi-level inverter fed induction motor is a single phase highly efficient motor among all. It is widely used in medium-voltage applications such as machineries, air compressors and vacuum pumps. But however this MLI fed induction motors suffered by poor quality of voltage and current due to occurrence of harmonics and poor input power factor which results high level of energy losses. This confliction is avoided by improving power factor using various power factor control methods. By improving the power factor we can get the better efficiency with reduced Total Harmonic Distortion (THD). The effectiveness of system is verified through MATLAB/SIMULINK.
A novel impedance source fed H-type flying capacitor multilevel inverter Balamurugam, C. R.
International Journal of Applied Power Engineering (IJAPE) Vol 10, No 1: March 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijape.v10.i1.pp%p

Abstract

 In this paper, simulation using MATLAB-SIMULINK is performed with bipolar triangular fixed amplitude multi-carrier Phase Disposition (PD) PWM strategy with sine wave, Third Harmonic Injection, 60 degree PWM and stepped wave reference for the chosen impedance Source based H-Type flying capacitor Multilevel Inverter (ISBH-Type FCMLI). The root mean square value of the fundamental component and THD of the output voltage which are the most important performance indices for the chosen inverter topologies are evaluated presented and compared for various references through duty ratios. From the simulation results it is observed that for various references the THD is almost similar but the root mean square value in terms of voltage is more for THI, 60 degree PWM and 60 degree reference with phase disposition strategy. The results are obtained for ma < 1 (under amplitude modulation index), ma=1(normal amplitude modulation index) and ma > 1(over amplitude modulation index).
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