Author(s): M.Deepika, Mrs.S.M.Padmaja
Published in: International Journal of Engineering Research & Technology
License: This work is licensed under a Creative Commons Attribution 4.0 International License.
Volume/Issue: Vol.1 - Issue 5 (July - 2012)
Abstract:: In distribution system (DS), the majority of power consumption has been drawn in reactive loads. These loads are drawn in low power factor and therefore give rise to reactive power burden in the distribution system. So that DSTATCOM controller is used to compensate reactive power, correction of power factor and elimination of current harmonics. This paper presence the 5-Level Cascaded H-bridge Inverter as DSTATCOM for compensation of Balanced and Unbalanced Linear and Non-Linear Loads by using Level Shifted and Phase Shifted PWM techniques. The advantage of CHB Inverter is reducing the number of switches and thus switching losses. The P-Q reference frame theory is used to generate the reference currents for the converter and these reference currents are the reference signals for the PSCPWM and LSCPWM to generate PWM Modulation Waveform while Proportional and Integral Control (PI) is used for DC bus voltage regulation. Finally, the results are compared between the without and with DSTATCOM obtained through MATLAB/Simulink Software.
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