Active Harmonic Filtering(AHF) protects your power grid and cost-saving

As you may challenge from the non-linear loadings, including electric Arc furnace or other types of furnace for steel or aluminum melting, DC power supply controlled by IGBT for industrial applications, cycle converter, VSD(varied speed drives), large winders, sag mills, or other heavy mining loadings for the mining industry, isolated power grids for marine, gas & oil industry.

Those nonlinear loadings in the power grid usually cause power quality problems, including flickers, voltage variation, poor power factor, and harmonic current. Those poor power quality results in longer working time, lower productivity, more electricity consumption, unsteady performance, increased breakdown rates, or even damage to the sensitive electronic equipment of the application, production capacity would not be fulfilled. What’s more, if it connects to the public power grid, other customers from the same bus bar may be influenced too.  

Water and wastewater treatment plants, heat, ventilation and airconditioning(HVAC), and district cooling plants use a lot of non-linear electrical equipment to fulfill the tasks. Such as variable frequency drives(VFDs), uninterrupted power supply(UPS), ozone generators, UV lights, computers, and lightings, etc. Harmonic current distorted power grid with all these non-linear loadings. The current becomes to non-sine wave shape. But control circuits are designed to use pure sine-wave current. When operated under distorted waveform, repeated breakdown arises for the sensitive electrical equipment, resulting in a costly repair. Also, all other loadings in the power grid need power continuity instead of power outages or voltage sags.

Also, hospitals, data centers, and IT facilities, and airports are among the most demanding applications. Electricity smoothness and continuity are the key demands for these fields. However, their dynamic medical equipment, non-linear loadings variable frequency drives from their grid system cause a big amount of harmonic currents, which would cause power quality problems to damage the expensive equipment and bring profit loss, non-comfortable service for the facilities.

For solar power farms, harmonic current may be produced from the DC power supply and so on electronic equipment, which damages the electricity transmission and continuity. Costly maintenance and lower productivity caused.

With all the increasing demands for the pure electric power grid, an active harmonic filter(AHF) has developed and proved testable and effective for harmonic current filtering. The design theory is as below:-

How about the effect the AHF achieved?

What about Amvopower’s AHF advantages?

Wall hanging, support drawer type, and embedded inside your electrical appliances are optional for the installation, easy, convenient, and space-saving.

Which capacity could you choose? The AHF is easy to be customized, assemble and install. Every module’s capacity is 50A. Series connection with various modules for your ideal capacity requirements.

In order to enhance your productivity, eliminate electrical equipment breakdown, ensure steady and continuity of your power grid, save investing costs, please do not hesitate to contact me for more solutions.

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Jessie Liu

Jessie Liu

Hi, I am Jessie. The article' s author and the marketing director of Amvopower. Please feel free to write to me at jessicalau@amvopower.com to discuss your questions, full requirements or any area you may be interested in.

2 Responses

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