Reactors Chokes and Coils

Features & Principals

• PWM & switching power systems generate current harmonics which need reactors to block or attenuate unwanted PWM &harmonic current. Reactors both core & conductors have to work effectively for high frequency of PWM & harmonics & minimize the losses due to eddy currents. Here the serrated cores or thin lamination’s, powder iron, ferrite & thin conductors (less than skin effect depth) such as foils litz wires serrated conductors.
• Heat dissipation to reduce the temperature rise, by providing air suitable ducts, forced air, Al clamps work as heat conduction.
• Harmonic inductors reduce line notching. When Ac power converted in to DC by rectifier or SCR process of commutation results in notching depending on no of pulses & rectifiers.
• Increase short circuit capacity by limiting the current during load side short circuit.
  Also reduces nuisance power tripping in drives.
  Improves True power factor.
• The reducing harmonic enhances the load motor life as the result of less loss, less heat, less temp rise. Also mitigates motor bearing failure.
• Depending on the noise and requirement of smooth out put the 3% to 14% reactors selected.
  Input and output side reactors are used to attenuate the noise or harmonics.