Neutral-Point Potential Balance Control Strategy on Three-Level Active Power Filters

Table 2

Principles of sector selection.

uA_ref	uB_ref	uC_ref	S
>0	<0	<0	1
>0	>0	<0	2
<0	>0	<0	3
<0	>0	>0	4
<0	<0	>0	5
>0	<0	>0	6