Mitigating the plant current harmonics along with displacement
power factor correction is becoming essential in the era of
new kVAh based tariffs where electricity is billed based on
true power factor (presence of harmonics in plant current
reduces the true PF).
The traditional solution to improve true PF near unity is to
install two different systems
-
SVG/Detuned APFC for displacement power factor improvement
correction, and
-
Active Harmonic Filter (AHF) for current harmonic
mitigation.
Developed on the same 3-Level Inverter Technology platform of
i-PFC SVGs, i -PFC
+ SVGs do
offer the compact modular design and higher efficiencies (up
to 99%).
The i -PFC
+ SVGs give priority and do utilize
up to its full current capacity to improve displacement power
factor. At the same time, left over capacity will be utilized
to cancel dominant load current harmonics from 2nd to 15th
order, without exceeding 50% of its rated current capacity.
Majority of commercial and industrial establishments where
part of the loads are VFDs, UPS, and LED lighting will have
reactive and predominant 3rd, 5th, 7th, 9th, 11th and 13th
order harmonics, which are within the compensation range of an
i -PFC
+ SVGs.
Hence, the singular i -PFC
+ SVGs will become
economical and sensible choice for reactive power as well as
harmonic current compensation (yielding the true power factor
correction).