Power electronics technology is designed to solve any problem

Power electronics is an electronics applied to the field of power technology, which is called power electronic technique in engineering applications.

It is a marginal discipline closely related to electronics, control and electricity that uses high-power electronic devices to convert and control electrical energy. It establishes a relationship between the generation and use of electric energy, in which the generation, transmission and use of electric energy have high efficiency, and a variety of different loads can get the best form of energy and the best control they expect. Therefore, electronics technology is not only widely used in AC and DC power transmission and transformation devices in traditional power systems, but also widely used in AC and DC speed regulation of various motors in various fields of industrial production, and energy output control of various heating power sources (such as medium and high frequency induction heating power supplies, welding power supplies, etc.) in the field of material processing.

With the development of technology, various full-control high-frequency high-power devices and their power modules driven by voltage have appeared one after another, which provides conditions for the manufacture of various small, lightweight, stable high-efficiency and high-quality high-frequency switching power supplies, and this kind of power supply is currently widely used in various communication equipment, computers and even all kinds of household appliances.

Modern power electronic technology (modern power electronic technique) mainly takes the latest and most promising fully controlled power electronic devices in this field, such as POWER-MOSFET, IGBT, MCT, PIC, etc. as the background, introduces their basic structure, working principle, main parameters, application characteristics, as well as basic problems such as driving and protection in device applications. The basic principles, circuit characteristics, waveform analysis, and influence analysis of various loads on circuit work, analysis, and preliminary design and calculation of various conversion circuits under the conditions of hard PWM switch and soft PWM switch are introduced respectively. Through the study of this course, students will be familiar with the characteristics and use methods of various power electronic devices, master the structure, working principle and control methods of various conversion circuits, obtain the necessary basic theories, basic analysis methods and basic skills of power electronics technology, and lay a certain foundation for engineering and technical work and scientific research related to the application of power electronics technology.

Due to the singleness of the original power system and the difference of electrical devices, power electronics technology is used to change it to meet the functional characteristics of electrical devices and meet economic benefits.

Correct answer...

Power electronics are everywhere, mobile phone chargers and computer adapters.

In fact, it is a typical flyback DC conversion circuit.

Larger ones like motor frequency conversion control, reactive power compensation of the power grid, uninterruptible power supply.

and so on are the application of power electronics technology.

Personally, I think that in terms of future development, new energy power generation.

including grid-connected inverters), as well as ultra-high-power power electronic circuits are more promising.

New energy is a key area supported by the state at present and in the future, and both funds and projects are endless. The current demand for high-power power electronic circuits is also increasing, and there is still little breakthrough in technology.

Of course, if you want to say that the most promising, of course, is the new material power electronics!! However, it is too difficult to make devices, and there are too many backward ones in China, so there are very few people who do it.

Hope it will be useful to you, hope for the answer

1. Rectification, which turns alternating current into direct current with adjustable output voltage.

2. Voltage regulation, AC voltage regulation, DC voltage regulation, all kinds of switching power supplies.

3. Inverter, which converts direct current into alternating current and sends the remaining electric energy of the load back to the power grid.

4. Frequency conversion, changing the frequency of alternating current.

5. Standby power supply.

Wherever there is a need for conversion, power electronics are used.

A typical application of power electronics is the case power supply of a computer, which rectifies alternating current into direct current.

Power electronics are everywhere, energy-saving lamps, electronic ballasts, induction cookers, microwave ovens and other household appliances, automobiles, airplanes, ships and circuits are also inseparable from power electronics technology.

It is ubiquitous, the most important thing is that the power plant sends electricity to the user, and before the power is transmitted, it must be converted to DC through power electronics technology, and the power is transmitted to the user's place, and then the current must be converted before the user can use it. The core of power electronics technology is converter technology, and power electronics technology is involved in converter.

It generally refers to the application of DCDC ACDC of consumer electronics, as well as the application of this conversion and voltage transformation. Quite practical.

Power Electronics: An emerging electronic technology applied to the power sector.

Now we use it every day, such as electricity for daily life.

First, the low hydrophobic is the high-quality water produced by steam extraction heating, if there is no trap pump, the low hydrophobic will be led to the condenser, the temperature of the low hydrophobic is very high, which will have an impact on the vacuum of the unit, which may lead to a vacuum drop and reduce the operating efficiency of the unit.

Second, after the low-plus trap reaches the condenser, it is sent back by the condensate pump, and then heated by the shaft seal heater and the low-plus medium, which is a waste of steam extraction and a kind of repeated heating.

Thirdly, the main condensate pipe of the heater outlet after the trap pump is used, which increases the temperature of the condensate at the heater outlet, reduces the heat absorption of the condensate to the boiler after the condensate is removed from the oxygen generator, reduces the heat loss of the cold source of the trap flowing into the condenser, and improves the thermal economy of the unit.

Fourthly, the combination of trap pump and trap artesian flow is more flexible for the treatment of the drain, and the means of trapping water level control are more abundant.

The roles of circuits in power systems and electronics are as follows:

1. One of the functions of the circuit is to transmit and process signals, common examples such as amplifiers, which first convert the language or ** (commonly known as information) into the corresponding voltage and current by the microphone, which are electrical signals. It is then transmitted to the speaker through the circuit, and the electrical signal is restored to language or **.

Since the telecommunication output from the microphone is relatively weak and not enough to promote the sound of the speaker, an amplifier is used in the middle to amplify. This conversion and amplification of the signal is called the processing of the signal.

2. The power circuit in the power supply system plays the role of realizing the transmission and conversion of electric energy. The high-voltage electricity generated by the power plant is transmitted to various places through the high-voltage line, and then the high-voltage electricity is converted into low-voltage electricity through the transformer. This type of circuit generally requires that the energy loss be reduced as much as possible during transmission and conversion to improve efficiency.

3. The circuit realizes the transmission, distribution and conversion of electric energy; Realize the transmission and processing of electrical signals.

4. The operation of the circuit is extremely important in the whole power production process, because the operation safety of the circuit is directly related to the production safety of the enterprise and the safety of people's lives and property, so it is extremely important to understand the operation and maintenance of the circuit.