News & Insights
Stay informed with the latest developments in power quality technology, industry trends, and CHITEK solutions.
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.
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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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IEEE 519-2022 Harmonic Limits: What They Require and How a Low-Voltage AHF Delivers Compliance
IEEE 519-2022 sets the harmonic distortion limits and responsibilities at the point of common coupling. This article explains what the standard requires and how a CHITEK low-voltage AHF delivers compliance in real time.
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SVG vs Switched Capacitor Banks: Why Dynamic VAR Outperforms Fixed Tuning at the Low-Voltage Bus
Power factor correction at the LV bus starts with a capacitor bank — but modern plants run variable loads. This article quantifies where an SVG diverges from a fixed bank and why it matters for compliance and losses.
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Silicon Carbide in Active Harmonic Filters: Why the Wide-Bandgap Switch Redefines LV AHF Performance
The AHF has always been limited by the switch it is built on. Silicon carbide (SiC) MOSFETs change the ceiling. This article quantifies what the wide-bandgap material buys an LV AHF and where the IGBT still earns its place.
Read More SVG Technology Market Overview: Core Technologies and Application Scenarios
A technology-focused overview of the low-voltage SVG market, covering core IGBT/SiC technologies, key application scenarios in data centers and industry, and engineering selection criteria.
Read More Industrial Active Harmonic Filter Selection Guide: Technical Specifications and Best Practices
A technical guide to selecting industrial active harmonic filters: market trends, key specifications, THD reduction data, and engineering best practices.
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Industrial Active Harmonic Filter Selection Guide: Technical Specifications and Best Practices
A technical guide to selecting industrial active harmonic filters: market trends, key specifications, THD reduction data, and engineering best practices.
Read More Data Center Power Quality: Low-Voltage AHF + SVG at the UPS and Cooling Bus
How low-voltage AHF and SVG solve harmonics, poor power factor, and voltage fluctuation in AI/HPC data centers with UPS and VFD cooling systems.
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Case Study: Low-Voltage AHF Restores an Oil & Gas Plant's Power Quality
How a CHITEK low-voltage AHF reduced THDi from 32.5% to 3.8% in an oil and gas processing plant, restoring reliability and preventing shutdowns.
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