Motor System Is The Key Area Of ​​energy Saving And Emission Reduction Work

- Oct 08, 2018-

Energy saving in motor system is listed as one of the top ten energy-saving projects in China, and it is a key area for energy conservation and emission reduction. Recently, China's motor system energy-saving technology seminar was held in Beijing. Zhao Ming, secretary general of the Energy Conservation Service Industry Committee of China Energy Conservation Association, pointed out at the meeting that in China, motor is an important industrial energy-consuming equipment, and its electricity consumption accounts for about the entire industrial power consumption in China. About 60%. There are many types of motor products in China, the average efficiency is 3 to 5 percentage points lower than that of developed countries, and the operating efficiency is 10 to 20 percentage points lower. The energy saving potential is huge.

Li Aixian, vice president of China National Institute of Standardization, also pointed out that China's resource and environmental constraints are increasingly prominent. There is still a big gap between the energy-saving work level of motor systems and demand. The basic work such as technical standards needs to be strengthened, and efficient and universal. The equipment has yet to be developed, and the motor system is reasonably matched and the operating efficiency needs to be improved. Twelve-five motor energy saving will intensify

With the development of China's industrial economy, motors have been widely used, and there is a huge demand for improving the efficiency of motor systems and strengthening system energy conservation management. According to relevant information, the total installed capacity of electric motors in China has reached more than 400 million kW, and the annual power consumption has reached 1.2 trillion kWh, accounting for 60% of the total electricity consumption in the country, accounting for 80% of the industrial electricity consumption. The total installed capacity of pumps and compressors has exceeded 200 million kW, and the annual power consumption has reached 800 billion kWh, accounting for about 40% of the country's total electricity consumption. Industry experts believe that the energy saving requirements of the motor and its drag system are extremely high, and its energy-saving effect is also the most easily reflected. Increasing the efficiency of the motor is a very important part of the energy saving of the motor system. The average efficiency of Y series motors widely used in China is 87.3%, while the average efficiency of high-efficiency motors in the United States is 90.3%. The average efficiency of ultra-efficient motor products introduced in recent years is as high as 91.7%. Therefore, the potential for energy saving by increasing motor efficiency is enormous. Using new motor design, new processes and new materials, the output efficiency is improved by reducing the loss of electromagnetic energy, thermal energy and mechanical energy. The efficiency of energy-efficient motors is about 3% to 5% higher than that of conventional motors.

Li Minghui, Minister of Commerce, Energy and Environment of the EU Representative Office in China, said that the requirements for efficient and low-energy operation of the motor system are increasingly strict, both in China and in the EU countries, especially for small and medium-sized motors. Everyone faces a big challenge in matching the higher energy efficiency standards. Li Aixian pointed out at the meeting that since the 11th Five-Year Plan, the energy-saving project of the motor system, which was listed as one of the top ten energy-saving projects, has made positive progress, and has made great progress in the promotion of energy-saving products, research and development of energy-saving technologies, and implementation of energy-saving technological transformation projects. Development, the motor industry has been greatly improved in terms of industry scale, product structure, technology level and marketization. During the 11th Five-Year Plan period, China proposed to implement optimization and transformation of high-efficiency energy-saving fans, pumps and compressor systems in the construction and electric power industries, and promoted variable frequency speed control and automation system control technology, laying a good foundation for the promotion and application of motor energy-saving technologies. It is reported that during the 12th Five-Year Plan period, the National Development and Reform Commission and other relevant departments will promptly establish a new mechanism for the promotion of high-efficiency and energy-saving motors with the financial subsidy policy as the core to ensure the completion of the promotion of high-efficiency and energy-saving motors. The central government will adopt the method of awards and subsidies to encourage the application of high-efficiency motors through the implementation of energy-saving technological transformation, contract energy management and other projects. In order to cooperate with the implementation of the energy-saving project of the motor system, the China National Institute of Standardization has proposed the China Motor System Energy Conservation Challenge Project to the EU SWITCHAsia. In the past three years, the project has successfully promoted the energy-saving transformation of nearly 400 motor systems, saving more than 400,000 tons of standard coal per year for China, and reducing carbon dioxide emissions by about 1 million tons per year.


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