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).
SVG+ (SVG with harmonic compensation capabilities from InstaSine), combines the functionalities of (InstaSine i - PFC) and (InstaSine i - AHF), make them a go to solution where true power factor improvement is needed. That means, near unity power factor operation as well as compliance to Standard IEEE 519-1992.
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).
Below case study provides more insight on the capability and uniqueness of InstaSine SVG+.
A plant load voltage and current profiles at one of our client locations are shown below. Following problems were noticed:
With i-PFC SVG+ installed, almost unity power factor can be noticed with the following observations:
With i-PFC SVG controlled as SVG+, add-on harmonic compensation can be observed.
# Note: harmonic cancellation and THD reduction levels are based on the available i-PFC SVG capacity. It is dynamically computed and thus best possible performance in simultaneous power factor correction and harmonic cancellation can be assured, always!