POWER QUALITY

Maintaining a stable level of power quality in the distribution network is a growing challenge due to increased use of power electronics converters in commercial and industrial sectors.

Power quality deterioration is manifested in increased losses, poor utilization of distribution systems, mal-operation of sensitive equipment and disturbances to nearby consumers.

Since 30 years EEI has paid particular attention to power quality, for that reason has developed a series of solutions for the reduction of  current harmonics and for reactive power compensation to the grid.

MAIN ISUESS CONCERN POWER QUALITY:

  • Harmonic distortion
  • Reactive power
  • Unbalanced loads

MAIN EFFETCS:

  • Oversizing of power cables, transformers and generators to support higher currents due to reactive energy
  • Electrical penalty bills due to kVAR injected to the grid
  • Voltage harmonic distortion due to an unbalanced loads
  • Energy loss and overheating
  • Harmonic resonances that cause an instability  of power distribution system
  • Equipment failure such as breakers tripping, fuses blowing or malfunctions due to harmonics
  • Communication interference

ACTIVE HARMONIC FILTER AHF

The EEI Active Filter is an innovative equipment for the compensation of current harmonics generated by distorting loads.

It is a good alternative to the use of passive filters since it avoids the well-known drawbacks of these ones: uncontrolled resonances, e.g. caused by variations of parasitic parameters of the line, overloads caused by harmonic currents produced by near users, detuning caused by drift of the features of the employed components, slow response to load variations.

Moreover, the Active Filter achieves a better current harmonic compensation in sight of future restrictions imposed by the rules.

MAIN FUNCTION:

  • Harmonic compensation up to the 50th
  • Active VAR compensation
  • Unbalance compensation

MAIN FEATURES:

  • Innovative control algorithm
  • Very fast response
  • Multi-level topology,
  • Low losses
  • Automatic Fan regulation
  • User friendly interface – high resolution 4.3’’ display
  • Stack mounted for bigger capacity of compensation

Multiple units can be integrated in a 19’’ rack. In this way it also possible to set each unit to filter known harmonics.


MODULAR
Suitable for stack mounting for bigger capacity of compensation


ADVANCED
Innovative control algorithm and flexible software configuration


MULTI-FUNCTIONS
Available wide set-up functionalities


RELIABLE & EFFICIENT
Equipped with latest power technology and compact design and energy saving

REACTIVE POWER COMPENSATOR

The EEI reactive power compensator uses an AFE (active front end) architecture, IGBT PWM technology  is managed by digital controller, completely developed by EEI.

The reactive power compensator is connected to the grid through a LV/MV transformer, that can be provided by EEI as complete solution.

The  compensator is equipped with LC sinusoidal filter to reduce the current harmonic distortion less than 3%.

The reactive power compensator includes an own automation system, able to communicate with main controller through Modbus TCP/IP interface or other communication protocol upon request.

In the last 30 years EEI has provided various reactive power compensators as tailor made solutions for different applications:

  • Power factor correction on the point of connection
  • Reactive power injection according to the drop voltage controller
  • Reactive power set point by an external controller through Modbus TCP/IP interface or analogic signal

MAIN FEATURES:

  • Modular IGBT power circuit architecture
  • Film capacitors
  • Low inductance connections
  • LC sinusoidal filter
  • Full digital PWM management
  • HMI with datalogger for remote control
  • Designed on customer request

MAIN ADVANTAGES:

  • High reliability ensured
  • Extended lifetime
  • Easy accessibility and maintenance
  • Low current harmonics distortion <3%
  • Suitable for different type of plants


ADVANCED
Flexible software configuration allow wide functionalities


READY
Suitable for different type of plants


RELIABLE & EFFICIENT
Equipped with latest power technology and design with more than 40 years of experience


COOLING
Available air and water solution