The Improved Unified Power Quality Conditioner with the Modular Multilevel Converter for Power Quality Improvement

Figure 5

(a) FFT waveform for % THD without MMC-based UPQC, (b)FFT waveform for % THD of with MMC-based UPQC, (c)reference % THD, and % THD of the proposed system.

(a)

(b)

(c)