An example of a harmonic solution that is commercially available would be a(n) ___.

An example of a harmonic solution that is commercially available would be a(n) ___.

• A. DC to AC voltage inverter
• B. Line reactor
• C. Step-up transformer
• D. In-line capacitor

Answer: (B)

Harmonics are unwanted multiples of the power frequency that can distort current and cause problems in electrical systems. A line reactor fits as a readily available device to address this by inserting a series inductor in the line. That added impedance, especially at higher frequencies, dampens the sharp current spikes from switching power electronics and reduces the flow of harmonic currents back into the supply. This makes line reactors a practical, commercially available solution for mitigating harmonics in drives and other switching loads. In contrast, a DC-to-AC inverter mainly creates switching harmonics that must be managed, a step-up transformer changes voltage levels without specifically targeting harmonics, and an in-line capacitor improves power factor but can create resonance or worsen harmonic conditions if not used carefully. So the line reactor is the best fit as a harmonic-management device.

Harmonics are unwanted multiples of the power frequency that can distort current and cause problems in electrical systems. A line reactor fits as a readily available device to address this by inserting a series inductor in the line. That added impedance, especially at higher frequencies, dampens the sharp current spikes from switching power electronics and reduces the flow of harmonic currents back into the supply. This makes line reactors a practical, commercially available solution for mitigating harmonics in drives and other switching loads.

In contrast, a DC-to-AC inverter mainly creates switching harmonics that must be managed, a step-up transformer changes voltage levels without specifically targeting harmonics, and an in-line capacitor improves power factor but can create resonance or worsen harmonic conditions if not used carefully. So the line reactor is the best fit as a harmonic-management device.