Cascaded Multilevel Inverter based D-STATCOM to improve power quality in grid
نویسنده
چکیده
This paper presents a Selective Harmonic Elimination-PWM technology (SHE-PWM) employing H-Bridge multilevel inverter configuration. In this method variable DC voltage is used and the lower order harmonics are eliminated, without affecting the structure of the inverter. This method gives constant switching angle, so it reduces the number of steps required for offline calculation. The proposed method optimizes the DC-DC converter topology for high efficiency with high voltage capacity. In this paper a Buck-Boost converter is used. Current and voltage closed loop controllers are used to meet reactive power demand under varying load condition. The matlabsimulink shows the output result. KeywordsSHE-PWM, H-Bridge Inverter, reactive power compensation
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