High performance motor performance analysis and verification of design effects
On the basis of analyzing the five major losses affecting the efficiency of the motor, different solutions are proposed for different loss characteristics, and the effectiveness of various measures is verified by targeted tests. After comprehensive comparison, it is pointed out that the double-layer concentricity and low-harmonic winding have great advantages in reducing loss, cost saving and process achievability. It is a good prospect for the design and production of high-efficiency motors.
introduction
Since the power consumption of the motor system occupies a considerable proportion in all countries of the world, with the increasingly tight energy situation, all countries in the world have carried out energy-saving work on the motor system. China's motor ownership is 1.7 billion kilowatts, which consumes 60% to 70% of the electricity consumption of the society. The state has put forward specific requirements for energy conservation and emission reduction targets in the 12th Five-Year Plan.
In this paper, the five major losses affecting the efficiency of the motor are systematically analyzed. Specific measures are proposed to improve the efficiency of the motor, and relevant experimental research is carried out. The method of developing high-efficiency motor is summarized.
Comparison of the effects of different measures
Through the above theoretical analysis and the actual test verification of the prototype, it can be seen that different measures have different effects on the efficiency of the motor and the cost. For a long time, the main means for most domestic motor manufacturers to design and produce high-efficiency motors is to increase the use of effective materials. As the energy efficiency rating of motors continues to increase, this practice is increasingly limited; direct punching out of the air gap process can greatly Reduce stray loss, but the manufacturing level of the rotor core is high; annealing can reduce the iron consumption of the motor but requires special process and equipment guarantee; and with double-layer concentric low-harmonic winding, only need to change the winding of the winding The method and the process can be realized highly, not only can improve the efficiency but also save the copper wire, and the effect is obvious in the trial production of the high-efficiency motor, and has broad application prospects.
