When we talk about modern power systems, two technical domains often overlap but are not always fully understood together: electromagnetic compatibility (EMC) and power quality. Both play crucial roles in ensuring that electrical and electronic equipment perform reliably and efficiently. For companies and industries adopting Static Var Generators (SVGs) and Active Harmonic Filters (AHFs)...
As the world accelerates toward cleaner energy, the grid is being asked to carry far more than it was ever designed for. Solar parks, wind farms, and EV charging stations are connecting at record speed. On the surface, this looks like a straightforward victory for decarbonization. Yet behind the scenes, one invisible factor quietly determines whether this energy transition can succeed: power quali...
1. Why Do SVGs Generate Harmonics? Unlike ideal components, the real-world power electronic switches (IGBTs) in an SVG do not switch sinusoidally. They use Pulse Width Modulation (PWM) to synthesize a sinusoidal output current. This switching action is the primary source of harmonics. PWM Switching Frequency Harmonics: The output voltage of the SVG's H-Bridge inverters is a series of high-fre...
SVG Parallel Operation Test via CAN Communication Test Objective This test aimed to verify the performance and stability of multiple SVG (Static Var Generator) units operating in parallel via CAN communication when internal CTs are not used. Specifically, eight SVG modules were tested to evaluate their operation, communication reliability, and reactive power compensation consistency under CAN-base...
Load Characteristics and Power Quality Issues in Commercial Buildings The main "sources of pollution" in commercial buildings include: Energy-Efficient Devices: Large quantities of LED lighting drivers, compact fluorescent lamps (CFLs), variable frequency drives (VFDs) for HVAC, and elevator VFDs. IT and Data Centers: Servers, computers, UPS (Uninterruptible Power Supplies), switching po...
Moving from a conventional silicon-based Active Harmonic Filter to one using Silicon Carbide (SiC) MOSFETs represents a major technological leap, and the cooling system is directly impacted. Here’s a detailed look at the cooling system of a SiC Active Harmonic Filter, highlighting how it differs from traditional IGBT-based AHFs. The Core Advantage: Why SiC Changes the Game Silicon ...
Unlocking 35% Annual Energy Savings: How Smart Monitoring Transforms Your Bottom Line For commercial and industrial facilities, energy costs are more than just a line item on a budget—they’re a direct driver of profitability. Yet far too many organizations leave significant savings on the table, simply because they lack visibility into how, when, and where they use power. The numbers d...
The choice between installing an Active Harmonic Filter (AHF) on the power side (at the Point of Common Coupling - PCC) versus the load side (at the source of harmonics) is a critical design decision with significant technical and financial implications. Here is a detailed analysis comparing both installation strategies. Executive Summary Load-Side Installation (Local Compensation): Targets s...
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