This helps not to exceed the 5% THD
maximum value on the injected grid current.
Figure 6 shows that measurement analysis for fan which is THD
for fan shows that 1.5% and K-Factor is 1.
Comparison of current THD
and power factor for lamps with the same rated power.
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Load Nominal Power (kVA) Nominal Voltage (RMS, L-L) Linear 10 380V Non linear 5 380V Table 3: Total Harmonic Distortion (THD
Further, the DPWM method is required to maintain total harmonic distortion (THD
) and reduction in switching loss.
Experimental results prove good performance of the proposed SAF in term of harmonic current reduction, THD
after compensation is below the limit recommended by IEEE-519 standard, and the neutral current became zero.
It will promote the Certified Apartment Maintenance Technician (CAMT) training program that is offered by NAAEI and sponsored by THDS
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The all of the THDs
and power factors obtained for all reference currents/insolation conditions are listed in Table II.
Parameter Value Voltage source 400 Vrms, 50 Hz DC-Bus capacitor 3300 [micro]F (each) DC-Bus reference voltage 880 V Limiting inductor 5 mH Switching frequency 25 kHz Table 2: THDs
of mitigated source current obtained from each harmonics extraction algorithm for capacitive (RC) and inductive (RL) loads.
With the actual GRF signal of the walk-on-the-spot experiment as the input and the corresponding output of the second order linear system of (6) and (7) as the estimated GRF, the THDs
can be determined for the IMFT mathematical model.