The major of "Power Electronic Equipment and System" mainly studies the theory and technology of power electronic equipment operation and control in industrial high-voltage system. With the extensive development of renewable energy, the development of power industry and its downstream industries puts forward new requirements for power electronic devices and systems. The power electronic technology formed by the integration of power electronic technology (strong current and weak current technology) will have a great impact on the operation of power system and the development of national economy in the future. The realization of these new requirements and the application of power electronics technology urgently need the on-the-job graduate technical personnel trained in this major to be in Guizhou.
This major mainly has three research directions: safe operation and fault diagnosis of power electronic equipment, application of power electronic technology in power system, and operation and control of transmission system. The main research contents are fault diagnosis and reliability of power electronic equipment, flexible AC transmission technology (FACTS), hvdc light technology (LHVdc), multi-terminal DC transmission technology (MTDC), static var compensator (SVC), static var generator (SVG), electric drive control, etc.
1, Safe Operation and Fault Diagnosis of Power Electronic Equipment
With the popularization of power electronic equipment, the fault diagnosis and reliability research of power electronic equipment has become an important topic to ensure the safe and reliable operation of the system where these equipment are located. The fault diagnosis of power electronic circuits is different from that of general analog circuits and digital circuits. Because of the small overload capacity and fast damage speed of power electronic devices, their fault information only exists in tens of milliseconds before the fault occurs. The power of power electronic circuit has reached several thousand kilowatts, and the methods of changing input, observation and output used in analog circuit and digital circuit diagnosis are no longer applicable. In this direction, the fault diagnosis technology of power electronic equipment is studied. In terms of safe operation and fault diagnosis, members of this professional team undertook projects such as the National Natural Science Foundation, proposed fault diagnosis methods based on parameter intervals, and maintained close cooperative research relations with the French National Research Center.
2. The application of power electronics technology in power system.
Power electronic technology is a new technology in electrician technology, and it is the integration of power technology and electronic technology (strong current and weak current technology). The research of new power electronics technology represented by FACTS technology will have a great impact on the production and operation of power system in the future. At present, the application of power electronics technology has involved all aspects of power system, including power generation, transmission and distribution system, energy storage system and so on. The research of flexible AC transmission technology (FACTS), hvdc light technology (LHVdc), multi-terminal DC transmission technology (MTDC), static var compensator (SVC) and static var generator (SVG) has been widely concerned by the power industry and academia at home and abroad. In this research direction, the academic team has carried out a lot of scientific research work, undertaken a number of national natural science foundation and provincial and ministerial fund projects, obtained a number of patents and research results such as controllable series compensation and multi-terminal DC transmission, and carried out results transformation and product development with related enterprises.
3. Operation and control of electric drive system
This paper studies the theory and technology of operation and control of electric drive system by means of power electronics technology. It involves frequency conversion technology, frequency converter technology, servo system driving and control technology and so on. Based on the embedded system as the control platform, the advanced control algorithm is studied and applied to solve the operation and control problems of the electric drive system, and various new power driving and power conversion technologies with high-power power electronic devices as the core are studied. In this research direction, the academic team has carried out a lot of scientific research work, undertaken a number of national natural science foundation and provincial-level fund projects, won a number of provincial-level scientific and technological progress awards, and achieved many application results in high-precision servo system, variable frequency speed regulation technology, multi-motor synchronous drive control and so on.
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