application
General industry:
AC/DC motors, electrochemical industry, metallurgical industry
Transportation:
Electrified railways, electric vehicles, aviation, aerospace, navigation
Power system:
High voltage direct current transmission, flexible AC transmission, reactive power compensation
Electronic device power supply:
Provide power for information electronic devices
Household appliances:
Energy saving lamps and variable frequency air conditioners
Other:
UPS, spacecraft, new energy, power generation equipment
effect
(1) Optimize electricity usage. By using power electronics technology to process electricity, the utilization of electricity is achieved in a rational, efficient, and economical manner, achieving optimal utilization of electricity. For example, in terms of energy conservation, a survey was conducted on 14 aspects such as fans and pumps, electric traction, rolling mill smelting, light industry papermaking, industrial kilns, induction heating, welding, chemical engineering, electrolysis, etc. The potential total energy savings are equivalent to 16% of the national electricity generation in 1990. Therefore, promoting the application of power electronics technology is a strategic measure for energy conservation, with a general energy-saving effect of 10% -40%. China has included many devices in energy-saving promotion and application projects.
(2) Transforming traditional industries and developing emerging industries such as mechatronics integration. According to developed countries, it is predicted that 95% of electrical energy will be processed and reused through power electronics technology in the future. Among various mechanical and electrical equipment in industry and civilian use, 95% is related to the power electronics industry. In particular, power electronics technology is a medium for weak electricity to control strong electricity, and an important interface between mechanical and electrical equipment and computers. It creates conditions for traditional and emerging industries to adopt microelectronics technology, becoming a guarantee and foundation for the role of computers.
(3) The development of high-frequency and variable frequency technology in power electronics will enable electromechanical equipment to break through traditional industrial frequency and move towards high-frequency direction. To achieve optimal work efficiency, the volume of electromechanical equipment will be reduced by several times or tens of times, the response speed will reach high speed, and it can adapt to any reference signal, achieving noise free and with new functions and applications.
(4) The progress of intelligent power electronics has to some extent integrated information processing with power processing, integrating microelectronics technology with power electronics technology. Its development may lead to significant reforms in electronic technology. Some even propose that the next revolution in electronics will occur in the field of electronic technology applications targeting industrial equipment and power grids, and power electronics technology will take people to the edge of the second electronic revolution.
