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Shunt active power filters (SAPFs) have been widely used to improve power quality of the grid by mitigating harmonics injected from nonlinear loads. This paper presents a new method for improving the performance of SAPFs using neutral-point-clamped (NPC) three-level inverters. NPC three-level inverters often suffer excessive voltage fluctuations at the neutral-point of DC-link capacitors, which may...
Neutral-point-clamped (NPC) three-level converter has been widely used in wind power generation systems. However, traditional NPC three-level converter often suffers excessive voltage fluctuation at the neutral point of DC-link capacitors. This problem may leads to switching devices damage and increases additional harmonics in output voltage of the converter. To solve this problem, a compensating...
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