Nowadays in cities, electronic devices such as computers, televisions, energy-saving lamps, UPS power supplies, and LED screens are the main sources of harmonics in buildings.

Municipal projects, such as rail transit, sewage treatment, telecommunications, heat, gas, etc. Computers, air conditioners, chillers, energy-saving lamps, UPS power supplies, LED screens, and inverter-type power loads are the main sources of harmonics.

Precision manufacturing projects such as semiconductors, precision components, and integrated circuit manufacturing.

The main harmonic sources in health care projects are electronic medical precision equipment, air conditioning, lighting, UPS, etc.

At present, the UPS widely used in the data room is mostly a three-phase full-control bridge with 6-pulse thyristor rectification mode.

Typical load in a car charging station:Lighting equipment and Charger (pile)

Harmonics in power distribution systems in the chemical industry are mainly due to the large use of power electronics.

Typical load in the metallurgical foundry industry:Electric arc furnace,Refining furnace,Medium frequency furnace

The mining of mining is inseparable from the investment of large-scale electrical equipment, and the degree of qualification of electrical energy directly affects the normal operation of the equipment.

The large-scale application of various non-linear electronic equipment devices such as inverters, rectifiers, and various switching power supplies in the modern industrial manufacturing industry has perfected the modern industrial automatic control techno