High efficiency motor boost energy saving potentia

2022-09-20
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Observation room: high efficiency motors have great potential to boost energy conservation

with the delimitation of the red line of energy consumption in the 12th Five Year Plan, the energy-saving space of motors has been paid more and more attention

the executive meeting of the State Council held on January 30 studied and deployed the work of controlling the total amount of energy consumption, setting a red line for national energy consumption

insiders believe that total energy control is essentially to promote the transformation of development mode and the adjustment of economic structure through energy constraints. At present, 70% of the total energy consumption is consumed by industry, so the transformation and upgrading of industry and vigorously promoting industrial energy conservation are the key

data show that the annual power consumption of electric machines in China has exceeded 2trillion kwh, accounting for about 60% of the national power consumption and 80% of the industrial power consumption. Improving motor energy efficiency and promoting high-efficiency motors are considered to be the top priority

it is urgent to improve motor energy efficiency.

at the national industrial energy conservation and comprehensive utilization work conference recently held by the Ministry of industry and information technology, the relevant person in charge of the Department of energy conservation and comprehensive utilization said that the Ministry of industry and information technology will focus on seven tasks this year, one of which is to organize and implement special actions for energy conservation and green development with the motor energy efficiency improvement plan as the starting point

experts from the China Society of electrical engineering told that China has become a large motor manufacturing country and has mastered the production technology of efficient and ultra efficient energy-saving motors, but on the whole, the competitiveness of the industry is still weak. The large amount of motors and the low level of energy efficiency restrict the healthy development of China's national economy. In the use of motor, there is also the phenomenon of big horse pulling small car. The promotion and application of high-efficiency motor is urgent

the energy consumption of high-efficiency motors is 20%-30% lower than that of ordinary motors, but the market share of high-efficiency motors in China is only 10%. Under the increasingly severe situation of energy conservation and emission reduction, the significance of vigorously promoting high-efficiency motors cannot be underestimated. A person in charge of Dalian electric machinery group said to Zhong

it is reported that at present, ordinary motors with standards below level 3 are still used in most parts of China. Affected by large R & D investment and high manufacturing costs, the price of energy-efficient motors remains high and cannot be effectively promoted, which further widens the gap between China's current motor energy efficiency level and foreign countries. Information asymmetry, concept dislocation, market irregularity, and weak awareness of energy conservation have also become obstacles in the promotion

CCID consultant researcher Wang Qiushi believes that the 12th Five year plan proposes to vigorously develop seven strategic emerging industries, and the motor industry, as a leading industry in energy conservation and environmental protection, new energy, new energy vehicles, and high-end equipment manufacturing, is bound to be strongly supported by national policies. The promotion of high-efficiency motors representing energy conservation and environmental protection will continue to increase

combination of financial subsidies and mandatory standards

in fact, in recent years, China has been actively studying and issuing incentive policies to promote efficient motors. In order to promote the promotion of high-efficiency motors, the state has implemented financial subsidies for high-efficiency motors since June 2010; In order to achieve the goal of promoting 31.77 million KW high-efficiency motors in 2011, the subsidy standard was raised in March of that year

it is said that developed countries such as Europe and the United States also mainly adopt financial subsidies to support the promotion of efficient motors and quickly start the market. Since the 1980s, the United States has adopted quota subsidies or discount subsidies from saved electricity bills to encourage users to buy and use efficient motors, and gradually improve energy efficiency access standards. With the support of the subsidy policy, the United States has fully popularized ultra efficient motors

a person in charge of Xiangtan electric group told that in addition to financial subsidies to promote the application of energy-efficient motors, relevant national departments have also revised the energy efficiency standards for motors, fans, water pumps, air compressors and other products to promote the improvement of motor energy efficiency through standards

the GB standard for the entire motor industry stipulates that since July 1st, 2011, the motor industry will take energy efficiency class II (high-efficiency motor) as the mandatory standard, and motors lower than energy efficiency class II are not allowed to be produced and sold. According to the new national standard of "limited values and energy efficiency grades of small and medium-sized three-phase asynchronous motors", y, Y2 and Y3 Series three-phase asynchronous motors produced in large quantities in China are also prohibited from production. In 2012, the Ministry of industry and information technology issued the 12th Five Year Plan for energy conservation in industrial systems. In this plan, the growth target of IE2 is that the motors of the whole IE2 will reach more than 80% of the whole motor market in 2015

at the same time, the relevant departments also issued a number of batches of the elimination catalogue of high energy consumption backward electromechanical equipment (products) to promote the progress of eliminating backward electromechanical equipment

in the view of industry insiders, the State adopts a combination of subsidies and coercion to ensure that your staff are fully familiar with your testing system and understand how to operate effectively, constantly improve the energy efficiency standards of motors, and encourage the development of the market for energy-efficient motors

promotion faces practical problems

the relevant person in charge of the national small and medium-sized motor and system engineering technology research center said that motors are the power source of various equipment and are widely used in industry, agriculture, construction, public facilities and other fields. As a power source, it is at the source of energy consumption. The improvement of motor energy efficiency can not only directly save a lot of electric energy at the root, but also drive compressors, pumps, fans and other equipment to improve the energy efficiency level, thereby improving the energy efficiency level of China's entire equipment manufacturing industry

although there are national financial subsidies, there are still some problems in practical operation. An industry insider said to, for example, whether the subsidies are sufficient and whether the subsidies can be in place. In addition, there are problems in market norms and energy conservation concepts

according to the introduction, the high-efficiency motor is actually based on the ordinary efficiency motor. By optimizing the production process of the motor, adopting advanced rotor structure and optimized electromagnetic field design, the working efficiency of the motor is increased by percentage points compared with the ordinary motor. Because the new cold-rolled silicon steel sheet is adopted and the new process is applied, and the material consumption of copper and related materials is increased, the cost is 20% - 30% higher on average than the traditional motor, This makes some downstream enterprises unbearable. In the tripartite agreement, this problem is a prominent problem in the promotion of high-efficiency motors

however, some relevant people from motor manufacturers told that the market price per kW of high-efficiency motors of the same specification (excluding financial subsidies) is about 20% higher than that of ordinary motors, of which the price of rare earth permanent magnet high-efficiency motors is about 40% higher. However, from the perspective of the whole service life of the motor, the initial purchase, installation and maintenance costs only account for about 10% of the total cost, while the electricity cost required for operation will account for about 90%. Choosing high-efficiency motors can significantly save electricity costs, which is actually more in line with the interests of enterprises in the long run. In the view of the person in charge, the awareness and concept of energy conservation is also a crux of the current difficulty in promoting high-efficiency motors

The statistical data of CIRC shows that

therefore, some experts suggest that in addition to doing a good job of subsidies, we should also establish a new mechanism for the promotion of efficient motors. Both from the production side and from the demand side, various means to promote the development of high-efficiency motors. (Zhang Zi test sensitive Rui)

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