STATCOM Based on Cascade Multilevel Inverter

Abstract:

Static Synchronous Compensator (STATCOM) using the voltage source inverter (VSI) has been widely accepted as the current generation of the reactive power regulators of power system, improving the network steady-state and dynamic performances, regulates power factor, reduces losses and allows higher power flows in the exist line, assists in the post-fault recovery of transmission system. The cascade inverter not only can eliminate the bulky transformers compared with the conventional STATCOM, but also employ a sinusoid pulse width modular scheme: phase-shift. The use of the feedback linearization approach to design nonlinear controllers of power inverters is particularly interesting because it transforms a nonlinear system into a linear one in terms of its input–output relationship. Partial linearization may still be useful in some cases providing that the internal zero dynamics exhibit a proper transient performance.

• Periodical: Applied Mechanics and Materials (Volumes 55-57)
• Pages: 1365-1369
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.55-57.1365
• Online since: May 2011
• Authors: Jun Li Zhang
• Keywords: Cascade Multilevel Inverter, Nonlinear, Partial Linearization, STATCOM

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