News & Insights
Stay informed with the latest developments in power quality technology, industry trends, and CHITEK solutions.
UPS Harmonic Mitigation in AI Data Centers: AHF at 300 A
UPS harmonic mitigation in AI data centers with a 300 A active harmonic filter: cut THDi, meet IEEE 519, protect IT load and transformer capacity.
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CHITEK Active Harmonic Filter: Cancelling Harmonics at Source
How the CHITEK active harmonic filter cancels distortion at source, with SVG phase balancing, SiC switching, sizing math and a commissioning checklist.
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CHITEK SVG: Modular Reactive Power Compensation with 3-Level IGBT
A static var generator for reactive power compensation: 3-level IGBT topology, modular SVG capacity, and how CHITEK SVG holds power factor near unity.
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FPGA Control in CHITEK Active Harmonic Filter Design
How FPGA control shapes CHITEK active harmonic filter design: microsecond harmonic detection, PWM timing, and the SiC stage behind the chitek active harmonic filter.
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Resonant Capacitor Banks: CHITEK AHF + SVG Case Study
How CHITEK AHF and SVG solved resonant capacitor bank failures at a copper plant — PF 0.61 to >0.95, THDi 28.5% to <5%.
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Voltage Unbalance: Causes, Costs, and How an LV SVG + AHF Restore Balance
A three-phase system is balanced only in theory. This guide explains how voltage unbalance is quantified, what it costs in negative-sequence losses, why fixed methods fall short, and how a low-voltage SVG + AHF restore balance.
Read More What Is THDi? How a Low-Voltage AHF Brings It Under 5%
THDi (total harmonic distortion of current) is the single number that decides whether a low-voltage bus meets IEEE 519. This guide explains what THDi is, how it happens, what it costs, and how a low-voltage AHF pulls it under 5%.
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What Are Harmonics — and Why They Threaten a Modern Low-Voltage Bus
Harmonics are currents and voltages at integer multiples of the fundamental. This guide explains where they come from, why they threaten a modern low-voltage bus, and how a low-voltage AHF cancels them within IEEE 519.
Read More What Is an Active Harmonic Filter? Principles, the i_c* Command, and the IGBT/SiC Bridge
An active harmonic filter (AHF) cancels harmonic current and corrects reactive power in real time. This article walks the principle from detection to injection and explains why the IGBT→SiC switch sets the performance ceiling.
Read More Why EV Charging Stations Need a Low-Voltage AHF + SVG
Every DC fast charger is a nonlinear load. As chargers multiply on one bus the distortion compounds. This article explains why a low-voltage AHF + SVG is the right fix for harmonics, unbalance, and reactive swing at charging hubs.
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