Table 3 Total harmonic distortion (THD) of the output current and voltage.

From: Grid tied hybrid PV fuel cell system with energy storage and ANFIS based MPPT for smart EV charging

Parameter

Simulation THD (%)

Hardware THD (%)

IEEE 519 Threshold (%)

Observations

Output Voltage THD

2.35

2.88

< 5

Slight increase due to switching nonidealities and sensor noise. LCL filter effectively attenuates harmonics.

Output Current THD

2.91

3.12

< 5

Similar trend as voltage THD; acceptable for grid connection.