Control of DSTATCOM in 3-Phase 3-Wire Distribution System using Modified IcosØ Algorithm

Bhim Singh, Sunil Kumar


In this paper, a 3-leg VSC (voltage source converter) based DSTATCOM (Distribution Static Compensator) is used for load compensation in 3-phase 3-wire distribution system. The control algorithm is based on IcosØ algorithm. This modified IcosØ algorithm is used for extracting the reference source currents for Power Factor Correction, Load Balancing and Voltage Regulation at PCC (point of common coupling). For various load conditions such as a reactive linear load, an unbalanced load and a non-linear load, Simulations are performed for Power Factor Correction (PFC) mode and Zero Voltage Regulation (ZVR) mode in MATLAB environment using SIMULINK and SimPowerSystem toolbox. Steady state and dynamic results on a developed hardware prototype of DSTATCOM are also presented to validate the control algorithm for DSTATCOM.

Keywords-DSTATCOM, Control algorithm, Power quality, Nonlinear load, Load balancing, Harmonics compensation, Voltage regulation.

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ISSN (Paper)2224-5774 ISSN (Online)2225-0492

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