At a time when technological iteration is accelerating, the technological innovation of motors as the core of power has attracted much attention. When traditional motors are unable to meet the needs of lightweight and high-efficiency equipment, coreless motors come into view with their unique advantages. This article will analyze its technical development trends for you and explore future application directions.
Analysis of existing problems and root causes
Although coreless motors have broad prospects, they face cost and life problems. The large air gap leads to high demand for exciting magnetic potential, and the reliance on strong magnets causes the cost to soar; the winding manufacturing process is complex, and the special structure has strict requirements on winding accuracy and materials, which increases production costs; the coils and carbon brushes are susceptible to complex electromagnetic environments during operation, and the precise internal structure makes maintenance difficult and replacement frequent. The root cause of these problems lies in the special structure of coreless motors, the low magnetic permeability of the windings, and the lack of iron core to enhance the magnetic field, which makes the magnetic field construction and component operation face challenges.
Exploration of technical improvement solutions
In response to the above pain points, technical improvements are constantly advancing. Optimize magnetic circuit design, use high magnetic energy product rare earth permanent magnet materials and innovate arrangement methods to reduce the amount of magnets while meeting performance requirements; introduce advanced manufacturing technologies such as 3D printing, innovate winding production processes, improve automation levels, and reduce labor costs; select high temperature resistant and wear-resistant materials to make coils and carbon brushes, improve heat dissipation and control strategies, and reduce component losses. These measures provide support for coreless motors to break through development bottlenecks from design, manufacturing to materials.
The significance of technological development
The technological progress of coreless motors is of far-reaching significance. The high efficiency and energy-saving characteristics are in line with the global emission reduction trend. If one-third of the new motors use coreless technology, annual electricity savings can reach 50 billion kWh. In the industrial field, its high power density makes the equipment more compact and efficient; in industries that are sensitive to weight and performance, such as aerospace and electric vehicles, lightweight design and excellent performance are key boosters.
The implementation of coreless motors can be divided into three steps:
（1）focus on R&D optimization to overcome technical difficulties;
（2）then jointly formulate industry standards and regulate the market;
（3）finally, through policy support and demonstration projects, cultivate market demand and achieve comprehensive promotion.
Although there are challenges with coreless motors, they have unlimited potential driven by technological innovation due to their advantages of energy saving, high efficiency and excellent performance. Paying attention to their development trends and seizing opportunities for technological upgrades will bring new breakthroughs to the development of various industries.