We all know that the full name of AHF is Active Harmonic Filter, so is there such a thing as a Passive Harmonic Filter? The answer is YES! But here’s the big question — do you really understand the differences between active and passive harmonic filters, and when to choose one over the other? Let’s break it down in a way that’s easy to follow, yet technically accurate...
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...
Part 1: Power Distribution - The "Highway System" for Electricity Power distribution is the final stage in the delivery of electricity from the generation plant to the end-user (homes, businesses, industries). Think of it as the local and regional road network that brings goods from a central warehouse to your doorstep. Key Components of a Distribution System: Distribution Substations: Receiv...
Modern power systems face a hidden threat: resonance. This occurs when harmonic currents from non-linear loads (like VFDs and rectifiers) match the electrical system's natural frequency. The result? Dangerous amplification of harmonic voltages and currents, leading to capacitor failures, overheating, and equipment damage. Traditional passive filters can ironically cause this problem by introducing...
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