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When a problem occurs, the basic options for controllingharmonics are: Reduce the harmonic currents producedby the load. Add filters to either siphon the harmoniccurrents off the system, block the currents from entering thesystem, or supply the harmonic currentslocally.
Keeping this in consideration, what causes harmonics in electrical systems?
Harmonics are created by electronic equipmentwith nonlinear loads drawing in current in abrupt short pulses. Theshort pulses cause distorted current waveforms, which inturn cause harmonic currents to flow back into other partsof the power system.
can harmonics pass through a transformer?
So, very high harmonics are blocked by atransformer, but “how many” of them passthrough depends on the fundamental frequency being applied. Theapplied DC “harmonic” (the constant voltage, oraverage voltage, in the primary) is always blocked.
Harmonics (electrical power) Harmonicfrequencies in the power grid are a frequent cause of power qualityproblems. Harmonics in power systems result in increasedheating in the equipment and conductors, misfiring in variablespeed drives, and torque pulsations in motors.