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Active Harmonic Filter

Introduction

Electrical supply system in today’s scenario faces a major challenge due to Power Quality issues.

  • Harmonics on supply system due to Electronics type of loads that are used extensively.
  • Power Factor correction, specifically with fast changing electrical loads and with unbalance loading between the three phases.
  • Load unbalance between the three phases. Such Power Quality “POWER QUALITY” issues cause multiple undesirable issues.
  • Reducing the efficiency of the electrical loads causing extra consumption, which in turn means extra money spent on electricity.
  • Power Factor penalty increase and loss of Power Factor incentive in electricity billing.
  • Maximum Demand factor in billing goes up. This again causes the electricity bills to go up.
  • Overloading / Overheating of the supply system transformer, cables and switch gears due to enhanced skin effect and additional currents flowing in Neutral.
  • Untimely failures / break-downs of the equipment connected to supply system. Causing Production loss / inconvenience.
  • Unwarranted tripping of the supply system by triggering of protection relays without knowing the apparent cause.
  • Disturbances in communication equipment.

SUPER SENSE is a part of “FACTS” (Flexible AC Transmission System) family product range.

It is recommended to be installed with the electrical supply system where the Power Quality problems are already identified.

It is also important to know the overall effect of the problem to be resolved by usage of right rating of the system.

MAVROS defined current rating is the 100% current rating that can be sourced / synced into itself.

Connection diagram with supply system:

SUPPER SENSE works by sourcing the right amount of disturbance / compensation current in reverse direction to filter it out from system.

It uses Power Electronics technology for creating the requisite mitigating current waveforms.

The control technology uses multiple DSP (Digital Signal Processing) microcontroller 32-bit and ARM cortex 32-bit microcontroller. This gives ultimate high-speed processing power for complex algorithms embedded in the microcontroller chips.

SUPER SENSE Rating and Capacity:

Models available with AC RMS continuous current in three phases and Neutral from 15Amp to 600Amp.

Available Ratings: 15, 30, 60, 100, 150, 225, 300- and 600-Amp AC RMS in all the three phases and neutral on continuous basis.

Capacity enhancement with cascading of the multiple units up to 16 units with maximum current rating of overall multiple system as 4800 Amp.

Units with exclusive selection for PF correction by usage of external Power Capacitors (with detuned reactors) can have double the current rating in same model. This mode can be revoked by User Setting menu

Highlights

  • User selectable priority adjustment between Harmonics, PF correction and load unbalance compensation.
  • Selective harmonics filtering - Up to 9 selected Harmonics.
  • Filtering efficiency > 94%.
  • Wide range rating from 15Amp to 300 Amp in a single cubicle
  • Direct connection from 200 to 500V AC.
  • Reactive power compensation per individual phase