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This paper investigates the detailed model, control and simulation of a multilevel inverter-based STATCOM. Nine-level STATCOM is selected as a demonstration. Basic structure and operation principle of the cascade multilevel inverter are explored, firstly. The cascade multilevel inverter consists of four single-phase full bridges in which each bridge has its own dc source, respectively. The phase-shifted...
Wind farms are confronted with increasing demands for power quality and fail-safe operation at grid fault. State-of-art techniques applied to meet low voltage ride-through (LVRT) requirements for fix speed wind farms are blade pitching and dynamic reactive power compensation. Besides, breaking resistor and energy storage unit is also helpful to LVRT performance. However, these approaches have their...
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