DC-Link Capacitor Aging Diagnostics, Thermal Stress Mapping, and Fan Health Monitoring in Power Quality Cabinets Quick Engineering Answer: In active power quality inverters (AHF and SVG), the DC-link capacitor bank endures severe high-frequency ripple currents ($I_{ripple} > 150\text{ A RMS}$ at 20 kHz), causing internal Joule heating ($P_{loss} = I_{ripple}^2 \cdot \text{ESR}$). When cooling f...
Why a Solar Plant Needs Active Compensation A Static Var Generator (SVG) is an active, IGBT-based power-electronics compensator that stabilises voltage, supplies or absorbs reactive power and filters harmonic current at the point of common coupling (PCC) of a solar plant. It turns unstable PV output into grid-compliant power for EPC contractors, electrical engineers, procurement teams and power-qu...
When Power Quality Equipment Must Also Be Quiet A Static Var Generator is normally evaluated by reactive power capacity, response time, power factor control and harmonic compensation. In many installations, the equipment room adds another requirement: the solution must also control noise, dust exposure and maintenance demands. YT Electric’s Fanless Static Var Generator uses natural he...
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. ...
When a PV plant reaches MW scale, inverter control stops being the same thing as grid code compliance. Compliance is judged at the point of common coupling (PCC), where the utility measures voltage and current quality — not at the inverter terminals. A plant with well-behaved inverters can still fail its connection test for that reason, and a medium-voltage STATCOM is usually the device that...
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...
SVG sizing for power factor correction cannot be estimated from transformer capacity or a motor nameplate alone. Those figures describe how much load a site could connect, not how much reactive power the load actually exchanges with the supply at the point of common coupling (PCC). A Static Var Generator chosen from nameplate data will either leave the power factor short of target or spend on capa...
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