Merus™ STATCOM – Static Synchronous Compensator

Merus™ STATCOM – Static Synchronous Compensator

Merus™ Static Synchronous Compensators (STATCOMs) are part of the Merus™ FACTS product family and built on modern IGBT power electronics technology. Merus™ STATCOMs are designed to provide real-time reactive power compensation and active harmonic filtering in demanding applications. Merus™ STATCOMs minimize voltage variations and mitigate flicker caused by heavy industrial loads, such as electric arc furnaces (EAFs), mine winders, harbor cranes, excavators, etc.

In wind and solar farms, Merus™ STATCOMs enable grid code compliance. Transmission and distribution utilities benefit from Merus™ STATCOMs in the form of improved transmission and distribution capacity. Merus Power provides STATCOM solutions up to 38.5kV levels. Merus Power can supply a complete turnkey solution.

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Functions and customer benefits

Key functions
  • Dynamic reactive power compensation
  • Flicker mitigation
  • Effective reduction of voltage fluctuations
  • Active harmonic filtering
  • Load balancing
Customer benefits
  • Higher productivity by reducing melt-time in steel plants
  • Increased torque leading to higher payloads of large inductive loads
  • Easy compliance with grid-code criteria in wind and solar farms
  • Cost-effective solution to increase existing electrical network capacity
  • Reduced system losses
  • Quick return on investment
  • Reduced maintenance costs and longer lifetime of plant
  • Transmission and distribution network capacity enhancement


Heavy industrial loads, such as arc furnaces, welding equipment, rolling mills and heavy induction motors used in mining and harbor environments, etc., significantly impact the stability of electric grid operation by causing flicker, voltage unbalance and harmonic distortion. With its ultra-fast response time of less than one millisecond, Merus™ STATCOM provides excellent compensation of reactive power and harmonic distortion even for the most rapidly varying heavy loads. Thus plant productivity can be increased and harmful power quality challenges, including flicker and harmonic distortion, can be effectively eliminated.

Wind and solar farms have to conform to regulatory power quality requirements known as grid codes. Voltage variations and harmonic distortion caused by renewable generation in varying climatic conditions is easily compensated by connecting Merus™ STATCOM to the power plant.

Transmission and distribution grids face rapid changes in reactive power demand from constantly fluctuating loads. This leads to significant voltage variations and may even cause a complete voltage collapse under certain severe conditions. Merus™ STATCOM is an excellent and scalable solution for grid voltage stabilization by fast reactive power compensation in varying loading conditions.

Application areas include
  • Steel industry (electric arc furnaces (EAFs), rolling mills, etc.)
  • Mining (Mine winders, excavators, conveyors)
  • Shredders and crushers
  • Welding
  • Cement plants
  • Traction
  • Harbor cranes
  • Voltage and reactive power control in transmission and distribution utilities

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