The pursuit of perfect power quality is undergoing a fundamental shift, driven by a new semiconductor material: Silicon Carbide (SiC) . Comparing a traditional Active Harmonic Filter (AHF) with a SiC-based model reveals more than incremental upgrades; it showcases a leap in performance, efficiency, and capability. For decades, traditional AHFs have relied on silicon-based IGBTs. These components w...
Boosting Hybrid PCS Performance with SiC Devices Hybrid PCS, or hybrid power conversion systems, are now common in energy storage and EV charging. They link batteries, solar panels, and the power grid. To work well, a hybrid PCS must be fast, efficient, and reliable.This is where silicon carbide (SiC) devices make a big difference. What Is a Hybrid PCS? A hybrid PCS can manage...
Power quality is a growing issue in Africa. Many sites now use solar inverters, VFDs, battery systems, UPS units, and LED lighting. These loads improve efficiency, but they also create harmonic currents and reactive power problems. This is one reason harmonics damage transformers in modern facilities. In many African industrial power systems, transformers carry the stress of the whole network. Whe...
Medium Voltage STATCOM for Mining Mining sites depend on stable medium voltage power. Crushers, conveyors, pumps, mills, hoists, compressors, and ventilation systems all place heavy demand on the electrical network. These loads do not always operate at a steady level. They start, stop, ramp up, and change throughout the day. This can create voltage fluctuation, poor power factor, and reactive powe...
Active Harmonic Filter for Transformer Overheating Transformer overheating is a common problem in modern electrical systems. Many sites check the transformer load first. They also check cooling, cable size, room temperature, and ventilation. But the transformer may still run hot. In many cases, the real cause is harmonic distortion. An active harmonic filter helps reduce harmonic distortion in rea...
Introduction: The 2026 Grid Emergency Meets AI Infrastructure In July 2026, the eastern United States is experiencing a punishing heatwave. The PJM Interconnection—the largest US regional grid—is forecasting demand to exceed 166,000 MW, dangerously close to its all-time historical record. Utilities are considering the unthinkable: cutting AI data centers off the grid to preserve...
Active Harmonic Filter Sizing: What Happens When You Get It Wrong Learn how harmonic current, load cycles, topology, temperature, and SVG/AHF selection affect THDi performance. Consider a textile mill with dozens of VFD-driven spinning frames. A 100 A active harmonic filter (AHF) is installed, but THDi at the PCC falls only from 28% to 19%. The unit is operating normally; it is simpl...
Modern agriculture is undergoing a profound electrification revolution. Irrigation pumps, grain dryers, greenhouse climate controls, and automated feeding systems are now standard equipment on farms worldwide. These tools bring efficiency and productivity, but they also introduce a hidden problem: harmonic distortion. You may have heard of "harmonics," but you might not realise they ar...
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