Control Scheme of Cascaded H-Bridge STATCOM Using Zero-Sequence Voltage and Negative- Sequence Current ABSTRACT: This paper presents a control scheme of cascaded H-bridge STATCOM in three-phase Power Systems. CascadedH-bridge STATCOM has merits in point of switching losses, output harmonics, and the number of circuit components. But every H-bridge cell has isolated dc capacitors. So the balancing problem of capacitor voltagesexists. Since STATCOM is often requested to operate under asymmetrical condition by Power System faults, capacitor voltage balancing between phase clusters is particularly important. Solving this problem, a techniqueusing zero-sequence voltage and negative-sequence current is proposed. By this scheme, the STATCOM is allowed to operate under asymmetrical conditions by Power System faults. The validity is examined by digital simulation under one line and two-lines fault circuit condition. Did you like this research project? To get this research project Guidelines, Training and Code... Click Here facebook twitter google+ linkedin stumble pinterest Instantaneous power control of D-STATCOM with consideration of power factor correction Research on three-level static synchronous compensator