An Advanced Multilevel Cascaded H-Bridge Based Statcom with Power Quality Enhancement
نویسنده
چکیده
Fig. 1.1 Shows the circuit configuration for a 19-level (lineto-neutral) H-bridge StatCom (H-StatCom). Each stack ofH-bridges essentially forms one phase of a threephase currentcontrolledvoltage source. The purpose of the H-StatCom isto modulate the voltage at the output of each stack so thatthe current through the inductors can be controlled to providepower factor correction, compensate for system harmonics, andalleviate other power quality problems.The earliest modulation scheme proposed for multilevelconverters is called staircase modulation. The voltagewaveforms produced using this technique are staircase approximationsto a sine wave.
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