A Brief Discussion Of The Working Principle Of Harmonic Filters.

harmonic filtration, also known as active filtering, works by detecting harmonics in our system and then actively generating a wave of equal magnitude and opposite phase to cancel out the harmonics. It cancels out the harmonics in our system using a compensation method. harmonic filtering equipment is essentially a high-power signal generator, with a hardware structure similar to a frequency converter. Based on the harmonic content of the fundamental signal, it generates harmonics with equal frequency and amplitude but a 180° phase difference to cancel out the harmonics. active harmonic filter cost can filter out various harmonics, especially low-order harmonics present in the power grid, and can simultaneously achieve reactive power compensation. ahf harmonic filter uses power electronic devices, resulting in higher costs, requiring trained personnel for maintenance, but has a small footprint, is adjustable, and provides ideal filtering effects. With the development of power electronics technology, its cost has significant potential for reduction, making it an inevitable development trend.

A brief discussion of the automatic harmonic filter working principle:

harmonic filter cost. Its principle is that the capacitor and inductor are matched to create a low impedance for a specific harmonic, allowing all of that harmonic to flow into low harmonic vfd. If a controller simultaneously controls two high-order harmonic filtering circuits, the low-order harmonic filtering circuit must be activated first; otherwise, it will amplify the harmonics. The controller generally uses reactive power as the sampling signal, collecting and sending signals in real-time. Most switching elements now use thyristor switching, which has a fast response speed. It mainly filters out high-order harmonics and has a certain loss to the fundamental wave. Generally, the better the filtering effect, the greater the loss to the fundamental wave. power harmonic filter has low cost, simple maintenance, a larger footprint, and a limited adjustable range.