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Innovative, Multi-Level Power Quality Equipment


Modern networks problems, harmonics

In recent years, electronic devices such as computers, speed drivers for production control systems, air-conditioning, lifts with the soft stop, pumps with soft start, etc., are increasingly used.

Their correct functioning brings various benefits on an industrial and private level but on the other hand it causes serious problems in terms of energy supplies and efficiency.

This is because the power electronic devices equipped with rectifiers, modulators etc., distort the wave shape of the current for the correct operation, creating the harmonics, which represents the deviation between the ideal sinusoidal waveform the 

network voltage or the load current should have, and what really it is.

Reduction of harmonic currents can report quantifiable benefits in terms of overall installation cost, energy bill reduction and protection against process interruptions and equipment faults.

Types of loads that generate harmonics:

• Solar and wind inverters

• Air-conditioning systems

• Pumping systems

• Variable speed drivers, converters…

• Cooling chambers

• PLCs

• Electronic light ballasts (LED)

• Personal computers (PC’s)




2. Harmonic Filtering

The GEAHF has been specially designed to eliminate harmonics from the network in an ultra-fast way, response time <20ms. 

The harmonics to be eliminated can be selected up to 50th order from the 3,5’’ color touchscreen display.

Thanks to the specially developed algorithm, GEAHF can detect a potential resonance on a harmonic and deactivate its compensation in order not to compromise the system.

The efficiency of the device reaches up to 97% even on the networks most compromised from the harmonic point of view.

1. Power Factor Correction

GEAHF save your installation from additional charges in the electricity bill by compensate for both capacitive and inductive loads. Furthemore accurate power factor correction reduces the current flow through the installation’s conductors, avoiding any overheating and the triggering of protections. 

In addition, benefits will also be seen on the performance of the transformer and its available power. The target cos Φ from 0,7 inductive to 0,7 capacitive can be set to reach any installation demand.

3. Phase Balancing

A three-phase power system is called balanced or symmetrical, if the three phase voltages and currents have the same amplitude and are phase shifted by 120º from one another. If any of these conditions is lacking, the system is called unbalanced or asymmetrical. 

There are no passive solutions which can perform negative sequence compensation for load balancing. On the other hand, this can easily be achieved using the GEAHF. 

The end result is a better use of existing electrical infrastructure, a significant reduction of energy bills and better voltage profile.

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