What is in this article?:
- Effects of Harmonics on Power Systems
- SIDEBAR: Terms to Know
If not properly designed or rated, electrical equipment will often malfunction when harmonics are present in an electrical system.
SIDEBAR: Terms to Know
Eddy current losses: Power dissipated due to current circulating in metallic material (core, windings, case, and associated hardware in motors, etc.) as a result of electromotive forces induced by variation of magnetic flux.
Hysteresis: The energy loss in magnet material that results from an alternating magnetic field as the elementary magnets within the material seek to align themselves with the reversing magnetic field.
Impedance: The total opposition that an electric circuit presents to an alternating current. It is the measure of the complex resistive and reactive attributes of a component (conductor, machinery, etc.) or of the total system within an AC circuit. Impedance causes electrical loss and is usually manifested in the form of heat.
Iron losses: These consist of hysteresis and eddy current losses associated with the metal laminations in motors and generators.