Hairpin Winding Industrial Permanent Magnet Motors：Competition For Leading Position

According to reports from China Industry News, Inovance Technology has launched an industrial motor equipped with hairpin windings, which the company claims is the world's first industrial motor adopting this cutting-edge winding technology. Coincidentally, JASUNG also stated that it developed industrial permanent magnet motors with hairpin winding technology back in 2014. These products have been put into operation at customer sites and run stably for more than a decade.

What advantages do hairpin winding industrial permanent magnet motors with have over conventional motors?

Such motors feature prominent strengths including substantially higher efficiency and lower power loss, higher power density with compact dimensions, stable performance in harsh operating conditions, as well as lower noise and longer service life.

Hairpin windings can raise the slot fill factor by 20% to 30%. This effectively reduces winding resistance and cuts copper loss, leading to a remarkable improvement in motor efficiency. Meanwhile, the stator can accommodate more windings within the same overall size. Under equivalent power loss, hairpin motors deliver higher power and torque output.

Compared with traditional round wire motors, hairpin winding industrial permanent magnet motors feature a regular shape and make closer contact with the teeth and yoke of the stator core. This reduces thermal resistance inside the slots and improves heat transfer efficiency, further boosting the motor's peak and continuous operating capacity. The motors maintain steady performance in extremely high or low temperatures and other harsh environments. Additionally, hairpin windings offer higher rigidity, which enhances the overall structural stiffness of the motor. This design helps mitigate both mechanical noise and electromagnetic noise. In industrial scenarios, lower noise creates a better working environment and extends the service life of the equipment.

Thanks to its comprehensive performance advantages, hairpin winding industrial permanent magnet motors have become a mainstream development trend in the industrial motor industry.