ACTIVE HARMONIC FILTERS provide a very effective solution in:
Mitigates Harmonic distortion, by injecting current to compensate any unwanted deviations from the standard 50 or 60 Hz supply. Ultimately helping by:
• Mitigating harmonics and reducing voltage fluctuations and
• Improving the Reliability and Capacity of the existing Electrical system and Reduced operating costs
• Deviations can be mitigated in full or partially.

Benefits:
 Easy and quick to install with Modular Configuration
 Can be combined with passive filters
 Harmonic attenuation up to 97% at rated current, preventing possible harmonic resonance
 Improvement in True Power Factor
 Reduced cable rating (neutral wire size).Mitigates neutral I and N-G V.
 Increase electrical network reliability and reduce operating costs
 Reduced switchgear, upstream transformer, and generator ratings
 Reduced energy bill and utility power factor penalties
 Avoids nuisance in tripping circuit breakers and protection relays
 Avoids malfunction of automatic control system and inaccuracy of instrument measurement
 Erases voltage distortion (flat top) typical in non-linear loads
 Avoids capacitor damage due to resonance.
 Increased equipment life

Applications

Commercial Buildings
Manufacturing Facilities
Data Center
Food & Beverage
Water Treatment Plants
Automotive Sector
Hospitals

Active Harmonic Filters

Active filters are power electronic devices connected in parallel with the load to be compensated. The device is a controlled current source, which generates current waveforms in real time, which will be typically a mirror images of harmonic currents to be compensated.

When connected in parallel to the non-linear loads, the load harmonic currents are compensated, leaving the network with fundamental current only. The control system monitors the relevant parameters of the network and is capable of detecting and instantaneously reacting to any disturbance in the load current and injects compensating harmonic currents, instantaneously.

DESCRIPTION

The AHFs consists of one or several filter modules with system controller. Filter modules and controller, both are embedded in our standard cabinets. CT terminations are fixed in a standard cabinet, and the AHF capacity can be configured accordingly to user requirement. The filter’s current capacity is easily expandable at the user’s site by attaching additional filter modules as per site requirement.

Flexibility of AHFs:

• Designers have more choices with flexible configuration
• Capability to expand
• Higher operating temperature up to 50 Deg. C.