Electronic compensation

The successor to the cos phi bank

Historically, capacitor banks have been used in installations to reduce reactive current. In modern installations, these capacitor banks often cause problems with overheating an inefficient performance.

Where active harmonic filters are too expensive, we can provide an electronic variant of the capacitor bank - based on 3-level IBGT technology - the Static VAR Generator.

• In capacitive networks where the emergency power generator does integrate correctly
• To compensate for rapidly changing electronic loads
• Installations with unbalanced, loaded phases where more power space is required
• Eliminate imbalance in feed-in at solar parks

Advantages of SVG over a capacitor bank

• Compensates for both inductive and capacitive reactive power
• Super-fast response time (<20ms)
• Fast and stepless, so that the possibility of over- or under compensation is removed
• More compact and lighter weight
• Reduced energy loss
• Impervious to resonance and interharmonics and not overloadable
• Maintenance free

Compensating for harmonic currents

With an active harmonic filter, harmonic currents can be compensated, creating additional power space and preventing machine and equipment failure and improving equipment longevity.

The active filter is based on 3-level IGBT technology, making the filter compact and minimising losses.

View active harmonic filters (AHF) in the Product Portal

• Reduction of inductive, capacitive and harmonic reactive power
• Reduce problems with LED lighting, charging points and frequency-controlled motors
• Filter out harmonic currents and thereby improve voltage quality

Advantages of an active harmonic filter

• All power quality problems can be solved
• Compensate for inductive, capacitive and harmonic reactive power
• Equalize unbalanced phases, creating additional power space
• Improve voltage quality
• Further improvements in power space by limiting de-rating power transformer
• Super-fast response time (<5ms) and continuous adaptation to the load
• Less losses, lower footprint
• Not overloadable and impervious to resonance and interharmonics

The best solution for reducing reactive power and filtering out the most common harmonics

In most installations the reactive power consists of inductive reactive power (poor cos phi) and harmonic reactive power caused by current harmonics up to the 9th order. The ASVG was developed precisely for this application.

As with the SVG, the ASVG can be used to reduce inductive or capacitive reactive power. In addition, 50% of available compensation capacity can be used to reduce harmonic through to the 11th order. This means that for most installations, the ASVG is the most effective solution for reducing reactive power.

As with the AHF and the SVG, the ASVG is based on IBGT technology. This results in a small product footprint, lightweight design and  reduced losses.

Read more about reducing reactive power in the white paper

Want to know more about specific topics? Read fortop's white papers online.

► White paper Reduce reactive power

► White Paper Active filters

► White Paper Voltage sags

► White Paper Higher harmonics

► White Paper Cos Phi compensation