Innovation in the motor industry: The trends of intelligence and energy conservation are obvious
The technological advancements in power electronics, computers and control theory have given rise to the rapid growth of the global industrial motor market. The advent of rare earth permanent magnetic materials and magnetic composite materials has led to the emergence of new, efficient and special motors. Under the global backdrop of energy conservation and emission reduction, the production of high-efficiency motors has become an inevitable choice for the development of industrial motors. Countries around the world have successively introduced energy-saving policies to accelerate the development of the motor manufacturing industry.
With the maturation of common low-voltage motor technology, there are still technical bottlenecks in areas such as high-power high-voltage motors, motors for special environmental applications, and ultra-high-efficiency motors. The development trend of the global electric motor market indicates that the industry is moving towards intelligence and integration. The traditional motor manufacturing industry has achieved the integration of electronic technology and intelligent control technology. In the future, the intelligent control technology of small and medium-sized motor systems will be continuously optimized to realize the integrated design and manufacturing of motor system control, sensing, driving and other functions.
Electric motor products are widely used in fields such as energy, transportation, petroleum, chemical engineering, metallurgy, mining, and construction. Against the backdrop of the continuous improvement of the global economy and technological level, electric motor products are gradually developing in the direction of professionalism, differentiation and specialization. In recent years, global environmental protection policies have provided clear guidance for improving the efficiency of motors and their control systems. The motor industry needs to accelerate energy-saving renovations, promote efficient and green production processes, develop a new generation of energy-saving motors, motor systems and control products, and testing equipment, and enhance the core competitiveness of motor and system products.
The high-efficiency and energy-saving motor adopts high-quality materials and optimized design to achieve higher efficiency. For example, increase the aluminum content of the rotor, optimize the rotor structure and air gap design, and reduce stray load losses; Improve the design of the cooling fan to reduce wind resistance loss; Adopt higher-quality and thinner steel laminations to reduce magnetization loss.
3.1 Optimize the size of the stator and rotor laminations and the quality of the steel
Core losses include hysteresis losses and eddy current losses, accounting for about 20% of the total losses. By optimizing the size of the laminations and the quality of the steel, eddy current losses can be reduced and hysteresis losses can be lowered.
3.2 Stator lamination is carried out using the immersion bath process
Impregnated stator can enhance electrical insulation, prevent the influence of chemicals or harsh environments, and improve heat dissipation.
3.3 Optimize the design of the stator slots to increase the volume of copper that can be inserted
The slot fullness rate affects the quality of the stator winding, reduces resistance and decreases total loss.
3.4 The rotor die-casting is made of high-quality pure aluminum
The custom-designed rotor can increase the starting torque, reduce the conductor resistance and improve efficiency.
3.5 The air gap between the rotor and the stator is optimal
Maintain the optimal air gap and improve the design efficiency.
3.6 Use high-performance electromagnetic enameled wire
Electromagnetic enameled wire adopts multiple layers of insulation to reduce winding resistance and minimize current loss.
An electric motor is composed of numerous components, and the functional quality of each component affects the performance of the motor. The optimization of motor performance is achieved by optimizing the performance of each component of the motor.
The motor manufacturing industry is gradually transforming from "large and comprehensive" to "specialized and intensive", and the development of intelligent control systems for motors promotes the development of specialized production models. In the future, driven by low-carbon and environmental protection policies, industrial motors will fully develop towards green and energy-saving.
