Modern industrial operations rely heavily on a steady, clean supply of electricity. The integrity of this power supply is constantly challenged by the proliferation of non-linear loads like variable frequency drives (VFDs), LED lighting systems, and server power supplies, all of which introduce complex harmonic distortions into the grid. These distortions can lead to devastating consequences, incl...
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...
Jiangsu Non Woven was founded in 2002 and has a 20-year history of non-woven fabric production, which is a high-quality manufacturer of high-end non-woven fabrics integrating R&D, production and after-sales. The factory is located in Zhitang Town, Changshu City, Jiangsu Province, a famous non-woven fabric production base in China, covering an area of 15,000 square meters, with a daily producti...
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...
Have you ever been troubled by these frustrating issues? Production lines in your factory halting without warning, causing massive financial losses? Lights in your office building flickering inexplicably, servers restarting frequently, putting data at risk? Receiving shockingly high electricity bills every month, with unexplained "penalty" charges? Electrical equipment overheating, lifespan shorte...
Take a look around your modern office: the efficient LED lights, the humming server racks, the computers on every desk, the projectors in meeting rooms... They are all symbols of your business's efficient operation. But what you might not know is that these modern devices are also invisible "sources of pollution," quietly increasing your operational costs and even threatening your business securit...
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 ...
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