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

Figure 2

Different modes of operation of the MMC. (a)MMC submodule operations. (b)Capacitor in the discharge mode, (c)submodule by the passed mode, (d)submodule by the passed mode, and (e)submodule-inserted capacitor in the charge mode.

(a)

(b)

(c)

(d)

(e)