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...
How a Copper Manufacturing Plant Solved Severe Harmonic Issues with SVG + APF Technology Real-world case study: Improving power quality, restoring capacitor operation, and eliminating production disruptions at Zhejiang Jinjia Special-Shaped Copper Co., Ltd. The Challenge: High Harmonics, Failed Capacitors, and Unstable Production Zhejiang Jinjia Special-Shaped Copper Co., Ltd., located in Changxin...
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