Table 6 Worst-case current THD under heavy non-linear loading, and its reduction via SAPF and hybrid filtering.

From: Power quality optimization framework for three phase microgrids with grid tied solar PV and battery storage under nonlinear loads

Operating mode

Worst case pre filter THD (%)

After SAPF (%)

After hybrid (%)

PV only

45.79

8.16

4.76

PV + BESS charging

46.66

10.48

4.79

BESS discharge

16.01

2.62

–(SAPF sufficient)

Grid only

24.43

11.24

2.85

Back to article page