A 120 kW DC fast charger is not a resistive load, and ten of them are not ten kettles. When a highway charging hub starts a batch of charging sessions within the same minute, the transformer, cables and switchgear see a load profile closer to a small welding workshop than a retail site. The consequences—harmonic distortion, reactive power and three-phase imbalance—surface as tripped br...
In modern industrial environments, automated manufacturing lines, variable frequency drives (VFDs), dynamic robotics, and heavy inductive loads have placed unprecedented demands on power distribution networks. While investing in power quality equipment is vital to reduce downtime, avoid utility penalties, and improve energy efficiency, selecting the wrong solution can lead to costly equipment fail...
SVG and AHF maintenance is the scheduled inspection, measurement and component-replacement programme that keeps a static var generator (SVG) and an active harmonic filter (AHF) inside their design limits — stable reactive power compensation, a corrected power factor, and harmonic current below the limits agreed at the point of common coupling (PCC). Most plants do not lose power quality equi...
Even-order harmonics are current and voltage components at even multiples of the fundamental frequency — the 2nd, 4th, 6th and higher orders — that appear as asymmetric distortion in a three-phase power system. They behave differently from the familiar 3rd, 5th and 7th odd harmonics: balanced six-pulse rectifiers do not generate them, but asymmetry does. Half-controlled bridges, DC-off...
YT Electric (Shanghai Yingtong Electric Co., Ltd) is a Shanghai-headquartered manufacturer of power quality equipment — active harmonic filters (AHF), static var generators (SVG and ASVG), hybrid reactive power compensation, medium-voltage STATCOMs and energy storage systems — serving industrial plants, data centres, commercial buildings, hospitals, rail and renewable-energy projects. ...
Industrial efficiency losses are not always mechanical. A plant can keep every machine healthy and still lose energy, capacity and uptime to harmonics, reactive power and three-phase current imbalance that never appear on a maintenance checklist. VFDs, rectifier-fed equipment and fast-switching electronics make production more efficient while making the network underneath less forgiving. This arti...
Dear Customers and Partners, As China’s National Day approaches, YT Electric would like to express our sincere appreciation to all customers, distributors and partners for your continued trust and support. Please be informed that our office will be closed for the China National Day Holiday from October 1 to October 7, 2026. During this period, responses to emails, technical inquiries and ord...
Centralized or Distributed Compensation? How to Place AHF and SVG in Multi-Transformer Facilities In modern industrial complexes, continuous process plants, chemical refineries, automotive manufacturing hubs, and large commercial campuses, electrical power is distributed via multi-transformer substations (often configured as Main-Tie-Main or dual-ended secondary selective substations). A standard ...
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