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The most concise summary of magnetic materials

The power supply device, whether it is a DC power supply or an AC power supply, uses an electronic transformer (soft magnetic and electromagnetic element) made of a soft magnetic core. Although there have been air-core electronic transformers and piezoelectric ceramic transformers that do not use soft-magnetic cores, so far, most of the electronic transformers in power supply devices still use soft-magnetic cores. Therefore, the relationship between the power supply technology and the electronic transformer is discussed: the role of the electronic transformer in the power supply technology, the requirements of the power supply technology on the electronic transformer, the influence of the new transformer using the new soft magnetic material and the new magnetic core structure on the power supply technology, certain It will arouse the interest of friends in the power industry and the soft magnetic material industry. This article puts forward some ideas in order to facilitate dialogues, mutual exchanges, and common development between the power supply industry and the electronic transformer industry and the soft magnetic material industry regarding the issues related to electronic transformers and soft magnetic materials. 3 d5 c) D8 a! R! Z
1 The role of electronic transformers in power supply technology
Electronic transformers and semiconductor switching devices, semiconductor rectifying devices, and capacitors together are referred to as the four major components in power supply devices. According to the role in the power supply device, the electronic transformer can be divided into: a power transformer that functions as a voltage and power conversion, a power transformer, a rectifier transformer, an inverter transformer, a switch transformer, a pulse power transformer; 4 G7 F6 v ( Z8 x
2) Broadband transformers, audio frequency transformers, mid-week transformers that function to transmit broadband, audio, mid-week power and signals;
3) Pulse transformers that act as transfer pulses, drive and trigger signals, drive transformers, and trigger transformers;
4) An isolation transformer that functions as the isolation between the primary and secondary sides and a shielded transformer that functions as a shield;
5) A phase change transformer which acts as a single-phase transformer for three-phase or three-phase transformation, and a phase-transformation transformer (phase shifter) for changing the output phase.
Change the frequency of the output frequency multiplier or crossover transformer;
7) Matching transformers that change the matching of output impedance and load impedance;
8) Regulated transformers (including constant voltage transformers) or stabilizing transformers that function as stable output voltages or currents to regulate the output voltage;
9) Filter inductors for AC and DC filtering;
10) An electromagnetic interference filter inductor that acts as an electromagnetic interference suppressor and acts as a noise filter inductor that suppresses noise;
11) An absorbing inductor that absorbs surge currents and acts as a snubber inductor to slow the rate of change of the current;
12) An energy storage inductor that acts as a storage energy and acts as a commutation inductor to assist the commutation of the semiconductor switch;
13) Switching magnetic switch inductors and transformers;
14) Controllable and saturable inductors that function as inductors;
15) Voltage transformers, current transformers, pulse transformers, DC transformers, zero flux transformers, weak current transformers, zero-sequence current transformers, Hall current-voltage detectors that convert voltage, current, or pulse detection signals .

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