Active filters

Our active filters correct 5 power quality problems:

  • Power factor correction
  • Harmonic distortion
  • Voltage unbalance
  • Voltage fluctuations
  • Under and over voltage
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What is an active filter and what is it used for?

Active filters are used to mitigate some power quality problems by injecting a compensation current into the system that is out of phase with the harmonic currents, effectively cancelling them out. This improves power quality and increases overall system efficiency. In addition, it can be used to improve the performance of distributed generation systems, such as solar PV and wind power systems, to meet grid connection standards and improve grid power quality.

SMARCTIVE, our active filter with the most advanced technology in the industry.

Filtros activos: Smarctive

Features and specifications

High performance

  • >97% harmonic cancellation
  • Most advanced FPGA digital control
  • Automatic fault protection

Scalable

  • Modular design
  • Up to 12 cabinets in parallel

Lower losses

  • Low IGBT operating temperature

Artificial intelligence

Plug and play

  • Ready to operate, no initial setup required

Automatic reset

  • In case of failure, the equipment automatically resets itself when conditions are as indicated.

Automatic environmental adjustment

Principales especificaciones técnicas de los filtros activos

Filtros activos: Especificaciones

Power quality problems corrected by our active filters

The SMARCTIVE corrects the main power quality issues

Filtros activos: Factor de potencia

Power factor correction

Corrects power factor by injecting a forward or reverse current to counteract reactive power in the system. This helps improve energy efficiency and reduce energy costs.

Filtros activos: Distorsión armónica

Harmonic distortion

Eliminate harmonic distortion by detecting harmonic current and injecting a corresponding current in the opposite direction. This helps improve power quality and protect equipment from damage.

Filtros activos: Desbalance de voltaje

Voltage unbalance

Eliminate harmonic distortion by detecting harmonic current and injecting a corresponding current in the opposite direction. This helps improve power quality and protect equipment from damage.

Filtros activos: Fluctuaciones de voltaje

Voltage fluctuations

Regulates voltage levels by injecting or absorbing reactive power to maintain a stable voltage level. This helps prevent voltage fluctuation that can cause visual disturbances in lamps and other electrical devices, as well as problems on the power grid.

Filtros activos: Bajo y sobrevoltaje

Under and over voltage

Regulates voltage levels by injecting or absorbing reactive power to maintain a stable voltage level. This helps prevent voltage sags and surges, which can cause equipment damage and unscheduled shutdowns.

How do active filters work?

Just as noise-canceling headphones have a microphone that listens for ambient noise and generates an opposing sound wave to cancel it out, an active filter has a measurement system that "listens" for noise in the power system and generates a compensating current to cancel out that which is less than ideal.

In short, an active filter is like noise cancelling headphones for the power system, it uses active technology to reduce unwanted harmonic distortion, correct power factor and improve the voltage regulation and unbalance of the power grid.

Filtros activos

Advantages of using active filters (APF)

1
 Reliability and continuity in production lines
2
Prevent electrical equipment failures
3
Maximize utilization of installed electrical capacity
4
 Improve power system energy efficiency
5
Reduce preventive and corrective maintenance service costs

What are the advantages of SMARCTIVE vs. traditional active filters (APF)?

The SMARCTIVE is a Shunt active filter with artificial intelligence (AI) that offers several advantages over one with fixed algorithms

One solution

The SMARCTIVE 2.0 being an AI driven APF can choose between 4 different control algorithms and depending on the system conditions, it chooses which of those algorithms is the most suitable to decrease switchover losses, i.e. it operates more efficiently.

The versatility of our active filter allows it to be a unique solution for different problems.

Most electrical disturbances have common root causes. The SMARTCIVE filter is capable of correcting most of them.

Filtros activos: Solución

Differences between a passive harmonic filter and an active APF filter

Passive and active harmonic filters are used to improve power quality, but they do it differently.

Active filters

Solves 5 of 8 power quality problems.

Active filters use power electronics to actively generate a reverse compensation current to cancel various harmonic components and improve power factor or other power quality parameters, such as voltage regulation and unbalance, i.e. they can solve 5 of the 7 main power quality problems.

Passive harmonic filters

Solves 2 of 8 power quality related problems.

Passive filters, on the other hand, do not use active power electronics. They use passive components such as reactors and capacitors tuned to a specific frequency to filter out a specific harmonic component and reduce the consequent harmonics. Passive filters can also compensate reactive power to improve power factor, solving 2 of the 7 main power quality problems.

Some frequently asked questions about our active filters

1

What are the most common types of active harmonic filters (APF)?

There are several types of active harmonic filters, which include:

1. current source active filter
Active voltage source filters
3. Series active filter
4. Shunt active filter
5. Adaptive active filters

2

Why do active filters use IGBTs?

Active filters (APFs) such as the SMARCTIVE use power electronic devices such as IGBTs (insulated gate bipolar transistor) to reduce harmonic distortion in the power system. IGBTs are used in AHF for several reasons:

- High frequency switching
- High power handling capability
- High voltage rating
- Efficiency
- Cost-effectiveness

3

What features will the new versions of active filters have?

This 2023 will see the release of SMARCTIVE 2.0 a Shunt-Adaptive active filter with artificial intelligence (AI) that offers several advantages over one with fixed algorithms. With a fixed algorithm, the filter requires initial configuration to determine what problem it needs to solve, such as what harmonics to filter out, how much of its total capacity to devote to mitigating harmonics, how much to improving power factor and how much to avoiding voltage unbalance. In contrast, the SMARCTIVE 2.0 being an AI-driven APF can perform self-diagnosis, to modify these parameters and ratios dynamically in real time based on changes in load conditions and the electrical system to which it is connected.

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