Principle:
The single-phase conduction of rectifier device causes the waveform distortion of alternating magnetic field of rectifier transformer; The distortion depends on the ratio of DC capacity to grid capacity, the frequency of harmonic current flowing into the grid and the number of harmonics.
One of the effective methods to suppress harmonics is to phase shift the high voltage side of rectifier transformer, which can basically eliminate the low-order harmonics with large amplitude.
Extended data application
Rectifier transformers are widely used in various industries, mainly divided into lighting, machine tools and electrical appliances, mechanical and electronic equipment, medical equipment, rectifier devices and so on. Product performance can meet various special requirements of users.
Electrochemical industry is the industry that uses rectifier transformers the most, electrolyzing non-ferrous metal compounds and producing metals such as aluminum, magnesium and copper. Electrolytic salt production to chlor-alkali; Electrolyzing water produces hydrogen and oxygen.
Advantages of microcomputer protection device for rectifier transformer
1, which can meet the inventory configuration of more than 20 kinds of protection and meet the requirements of users for different electrical equipment or line protection.
2. It can be used to prepare corresponding protection according to the needs of actual operation, and truly realize "tailor-made" for users.
3. The custom protection function can realize the special protection that is not provided in the standard protection library, and meet the needs of users to the maximum extent.
4. Various protection functions are relatively independent, and protection setting, realization, locking conditions and protection switching can be set and prepared independently.
References:
Baidu encyclopedia-rectifier transformer