– Why Harmonic are generated
Harmonic voltage can be caused by a variety of sources, including nonlinear loads, such as computers, variable frequency drives, and other electronic devices. These loads draw current from the electrical system in a non-sinusoidal manner, which can result in distorted voltage waveforms. The presence of harmonic voltage can have a number of negative effects on electrical systems, including increased losses in power transformers and other equipment, reduced power factor, and interference with communication systems.
One of the primary concerns with harmonic voltage is the potential for equipment damage. Nonlinear loads can generate high levels of harmonic voltage, which can cause overheating and premature failure of equipment, such as transformers, capacitors, and motors. This can result in increased maintenance costs and downtime for repairs.
Another concern is the impact of harmonic voltage on power quality. The presence of harmonics can reduce the power factor of an electrical system, which can lead to higher energy costs and reduced system efficiency. Harmonic voltage can also interfere with communication systems, such as radio and television broadcasting, as well as medical equipment, such as MRI machines.
To mitigate the effects of harmonic voltage, a number of solutions are available. One common approach is to use passive harmonic filters, which are designed to reduce the level of harmonic voltage in an electrical system. These filters are typically placed in parallel with nonlinear loads and are designed to absorb or redirect harmonic currents.