1. The concept of remanufacturing

　　Remanufacturing is the state of industrial products manufacturing industry to promote and encourage the comprehensive utilization of resources, to promote the transformation of the mode of economic development, an important policy measure, is the implementation of the "Circular Economy Promotion Law", to promote resource-saving, environmentally friendly society construction of effective means; refers to the use of advanced and applicable green remanufacturing technology, process, the ordinary efficiency and inventory backlog and the pottery out of the used industrial products after upgrading and transformation Its performance and quality meet the standard of new products; it is the Ministry of Industry and Information Technology is responsible for the management and supervision of the identification of remanufactured products, formulated the relevant systems, standards and implementation plans, organized the identification work and issued the "remanufacturing product catalogue", the development and cultivation of new industries in the circular economy; it is an important measure to achieve energy conservation and emission reduction, the development of the circular economy, and the construction of a resource-saving and environment-friendly society It is an important measure to achieve energy saving and emission reduction, develop circular economy, and build a resource-saving and environment-friendly society.

　　2. what is meant by energy-efficient motor remanufacturing

　　Motor efficient energy-saving remanufacturing refers to the original ordinary efficiency and inventory backlog and pottery out of the old motor through redesign, optimization and transformation of replacement parts and other methods, the use of high-tech dismantling, cleaning technology, repair technology and the use of new materials, new technologies (including the use of nanomaterials technology application of material modification will improve insulation performance, reduce the value of kg/kW), specialization, batch optimization Technology upgrading and transformation, with high quality, high efficiency, energy saving, material saving, environmental protection as the guideline, remanufacturing into high-efficiency motors or energy-saving special motors suitable for specific loads and working conditions of the system.

　　3. the basic principle of high efficiency and energy saving remanufacturing of motors

　　Through the feasibility analysis of energy-efficient remanufacturing of the original motor, judgement and selection of usable or reusable parts, and improvement of the resource recycling rate, we carry out energy-efficient remanufacturing of the original motor, including high-efficiency remanufacturing of electric motors, capacity-enhancing remanufacturing, capacity-reducing remanufacturing, voltage-boosting remanufacturing, voltage-reducing remanufacturing, variable-pole, variable-speed remanufacturing, frequency-adjusting remanufacturing of motors, and general-purpose motor to special-purpose motor remanufacturing, New type of collector ring remanufacturing of electric motors, etc. After re-designing and replacing parts and components, they are remanufactured into high-efficiency motors or systematic energy-saving special motors applicable to specific loads and working conditions.

　　Scope of application of high efficiency energy-saving remanufactured motors

　　1、When the running time is more than 3000 hours/year, the load rate is more than 60% of the constant-speed operation of the ordinary three-phase asynchronous motor, will be remanufactured into high-efficiency or ultra-high-efficiency three-phase asynchronous motor;.

　　2、When the load rate change is large, the speed change range is large but does not require continuous smooth change of the ordinary three-phase asynchronous motor, it will be remanufactured into a special motor with variable polarity variable speed.

　　3, when the load rate change is large, the speed change range is also large and continuous smooth change of the ordinary three-phase asynchronous motor, it will be remanufactured into frequency conversion speed control special motor and internal feedback speed control special motor.