What is power electronic converter technology?

Power electronic converter is an interdisciplinary subject, which refers to the use of modern power electronic technology (power science, electronics, cybernetics) to realize AC to DC and DC to AC. It plays an important role in the development of science and technology, energy saving and locomotive operation. Technology of converting and controlling electric energy by power electronic devices. Power electronics technology is mainly used for power conversion). 1.2 two branches of power electronic technology: power electronic conversion technology. Power conversion circuit composed of power electronic devices and technologies for controlling them, and technologies for composing power electronic equipment and power electronic system. The core of power electronic technology, the theoretical basis is circuit theory and power electronic device manufacturing technology, and the theoretical basis is semiconductor physics. 1.3 power converters are divided into four categories: AC → DC → rectifier DC → AC → inverter DC → chopper power supply: AC → AC voltage regulation, frequency conversion 1.4 Relationship between power electronic technology and electronic technology The theoretical basis of power electronic device manufacturing technology is the same as that of electronic device manufacturing technology, and most processes are the same. Modern power electronic device manufacturing mostly adopts integrated circuit manufacturing technology and microelectronic manufacturing technology, and many devices are common with microelectronic device manufacturing equipment. It shows that the two are homologous. Many analysis methods of power electronic circuits and electronic circuits are the same, but their application purposes are different. Broadly speaking, the power amplifier and power output in electronic circuits can also be regarded as power electronic circuits. Power electronic circuits are widely used in televisions, computers and other electronic devices, and their power supply parts are all power electronic circuits. The working state of the device: information electronics, which can be amplified and switched; In order to avoid excessive power loss, power electronic devices are always in the on-off state, which is an important feature of power electronic technology. 1.5 the relationship between power electronic technology and electrical engineering is mainly: power electronic technology is widely used in electrical engineering. Power electronic devices are widely used in high voltage DC transmission. Static reactive power compensation, electric locomotive traction, AC /DC electric drive, electrolysis, excitation, electric heating, high-performance AC /DC power supply and other power systems and electrical engineering. For details, please visit: transmission and distribution equipment network. Usually, power electronics technology belongs to the discipline of electrical engineering. Power electronics technology is the most active branch of electrical engineering, and its continuous progress has greatly promoted the modernization of electrical engineering. 1.6 Relationship between power electronic technology and control theory. 1) control theory is widely used in power electronic technology, which makes the performance of power electronic devices and systems meet various requirements. 2) Power electronics technology can be regarded as a technology of "weak current controlling strong current" and an "interface between weak current and strong current", and control theory is a powerful link to realize this interface; 3) Control theory and automation technology are inseparable, and power electronic devices are the basic components and important supporting technologies of automation technology. 2. The development of power electronic devices plays a decisive role in the development of power electronic technology. Therefore, the development history of power electronic technology is based on the development history of power electronic devices. The vacuum tube appears in 1904. It can control the electron flow in vacuum and be applied to communication and radio, thus opening the precedent of electronic technology. Mercury rectifier appeared in the late 1920s, and its performance is very similar to that of thyristor. The 1930s and 1950s were a period of rapid development and wide application. It is widely used in electrochemical industry, electrified railway DC substation, DC steel rolling motor drive, and even for DC power transmission. Source: www.tede.cn1947 Bell Laboratories invented the transistor, which triggered the electronic technology revolution 1957, the first thyristor 1960 was developed by General Electric Company of the United States, and the silicon rectifier/rectifier diode was successfully researched in China/KLOC-. ——GTR, a Giant transistor, appeared in the 1970s, and ——MOSFET, a metal oxide semiconductor field effect transistor, has been a composite device since the late 1980s, represented by Giant, an insulated gate bipolar transistor. IGBT is a combination of power field effect transistor (MOSFET) and bipolar junction transistor -BJT. It combines the advantages of low driving power and fast switching speed of MOSFET with the advantages of small on-state voltage drop and large current carrying capacity of BJT, and has excellent performance. It is the leading device of modern power electronics technology. Corresponding to IGBT, MOS controlled thyristor (MCT) and intelligent gate commutated thyristor (IGCT) are the combination of MOSFET and g to. They also combine the advantages of MOSFET and GTO. In the 1990s, there were mainly: power modules: in order to make the power electronic devices compact and reduce the volume, several power electronic devices and necessary auxiliary components were often made into modules. This brings great convenience to the application. Please visit the transmission and distribution equipment network to browse more information about power integrated circuit (PIC): PIC consists of drive, control and protection circuits and power devices. At present, its power is still very small. However, it represents an important direction of the development of power electronics technology. Intelligent Power Module (IPM) refers to the monolithic integration of IGBT and its auxiliary equipment with protection and drive circuits. Also known as smart IGBT. High voltage integrated circuit (HVIC) generally refers to the monolithic integration of horizontal high voltage devices and logic or analog control circuits. Smart Power Integrated Circuit (SPIC) generally refers to the monolithic integration of vertical power devices and logic or analog control circuits.