In recent years, although China has basically kept pace with the international level in the research and development of high-efficiency motors, the technological progress is very optimistic. But unfortunately, the IE3 motors produced in our country are used too little domestically, and most of them are used for export. It is not difficult to see that China still has huge challenges in high-efficiency motors.

The electricity consumption of electric motors in the industrial sector accounts for about 75% of the total electricity consumption of the industry. Motor energy conservation has become the key to industrial energy conservation. With the dual pressures of energy saving, emission reduction and environmental protection, energy-saving equipment represented by high-efficiency motors has attracted much attention in the market. A high-efficiency motor is a motor with a high efficiency of a general-purpose standard motor. High-efficiency motors use new motor designs, new processes and new materials to improve output efficiency by reducing losses in electromagnetic, thermal and mechanical energy. Compared with standard motors, the energy-saving effect of using high-efficiency motors is very obvious, and the efficiency can be increased by 4% on average.

As early as 2008, China has included motor system energy conservation as one of the top ten energy-saving projects in the country. In 2009, it also applied high-efficiency and ultra-efficient motor applications to Huimin Engineering. At the beginning of last year, the National Motor Energy Efficiency Improvement Plan was introduced. The plan mentioned that in 2015, China's motor products were upgraded, and 50% of low-voltage three-phase cage asynchronous motor products and 40% of high-voltage motor products were highly efficient. The standard of motor energy efficiency standards; the cumulative promotion of high-efficiency motors of 170 million kilowatts, the elimination of 160 million kilowatts of low-efficiency motors, the implementation of motor system energy-saving technology reform of 100 million kilowatts, the implementation of the elimination of motors and efficient remanufacturing of 20 million kilowatts.

It is estimated that in the year of 2015, 80 billion kWh of electricity will be saved, equivalent to saving 26 million tons of standard coal and reducing carbon dioxide emissions by 68 million tons. The Department of Energy Conservation and Comprehensive Utilization of the Ministry of Industry and Information Technology announced that it will officially implement the motor energy efficiency improvement plan nationwide. The plan is to use three years to improve the energy efficiency of the national motor and promote the transformation and upgrading of the motor industry. More than 30,000 industrial enterprises with an annual power consumption of 10 million kWh or more will be the key targets of the plan. Based on this estimation, the implementation of this plan will drive the demand for high-efficiency motors and related equipment to nearly 100 billion yuan. With the advancement of the energy efficiency improvement plan, the demand for high-efficiency motors will gradually be released, increasing year by year.

At present, there are fewer and fewer enterprises engaged in the production of traditional electric motors in developed countries such as Europe and the United States, and Chinese motor companies may become their importers. The proportion of high-efficiency motors in domestic existing stock motors is less than 5%, and the high-efficiency motors produced are mainly sold abroad. At the same time, the proportion of high-efficiency motors in China is currently only 23% to 25%. A manufacturer of high-efficiency energy-saving motors told reporters.

Short-circuiting of motor energy efficiency and foreign countries China has gradually become a major motor manufacturing country, mastering efficient and ultra-efficient energy-saving motor production technology, but overall, the industry competitiveness is still weak. The amount of motor is large and the energy efficiency level is low. At present, there is still a big gap between China's overall energy efficiency level and foreign countries, especially the energy-efficient use of electrical equipment such as motors and transformers. The amount of electricity used is large and the application area is wide. The electricity consumed by the motor per year accounts for 64% of the total social power consumption. The energy consumption of the field motor accounts for more than 70% of the total electricity consumption in the industrial field. The energy efficiency of the motor system is much different from that of the foreign country, which is about 15%~20%. Gao Dongsheng, deputy director of the Department of Energy Conservation and Comprehensive Utilization of the Ministry of Industry and Information Technology, said.

According to the GB186132012 standard, China's current production and in-use motors are mostly Class 3 energy-efficient motors that are lower than the standard. The average efficiency is 87%, and the efficient motor efficiency that has been implemented in developed countries has reached more than 91%. In addition, statistics from the Ministry of Industry and Information Technology show that the proportion of high-efficiency motors in domestic motors is only about 5%. Academician Tang Renyuan, a well-known domestic motor expert, also pointed out that in recent years, although China has basically kept pace with the international level in the research and development of high-efficiency motors, the technological progress is very optimistic. But unfortunately, the IE3 motors produced in our country are used too little domestically, and most of them are used for export. It is not difficult to see that China still has huge challenges in high-efficiency motors.

In the future, on the one hand, we should carry out in-depth research on energy-saving technologies for motors and their systems, such as research and development of energy-efficient motors; high-efficiency fans, pumps, compressor systems; high-efficiency transmission systems; reasonable matching of motor systems; and system integration solutions for energy-saving of motor systems. On the other hand, it is necessary to formulate guidelines and standards for energy-saving of motor systems, such as guidelines for system energy-saving renovation, energy-saving testing and evaluation standards for motor systems in special fields. In addition, we must establish a motor system energy certification agency, such as market access certification, energy-saving product certification, energy-saving certification of various high-efficiency motor systems. Chen Wei, director of the National Small and Medium-sized Electrical and Systems Engineering Technology Research Center, said.