Power the future!
Wolong Nanyang Explosion Protection Motor
- 1
- 2
- 3
News
Why are electromagnetic flat wire motors so popular?
source：未知 time：2024-07-11 09:32
The winding scheme is the dominant factor of motor products, which directly affects or determines the performance indicators of motor products in many aspects, such as cost, efficiency, temperature rise and insulation level.
Round wire winding has more advantages than flat wire winding, such as the convenience of winding production and manufacturing process, suitability for various slot shapes, relatively short production and manufacturing cycle, etc. However, for large motors and special-purpose motors, due to the constraints of electromagnetic round wire on slot full rate and insulation level, electromagnetic flat wire is naturally used as the key point for improving motor performance.
In the low-voltage wound rotor motor scheme, more rotor windings are flat wire windings. One is electromagnetic enameled winding, and the other is a copper bar rotor with bare copper bar as conductor and insulating material wrapped around it. Compared with round wire winding rotors, flat wire windings have great advantages in terms of ventilation and heat dissipation, efficiency, and later quality assurance of rotors.
For high-power motors, especially high-voltage motors, the stator windings also use flat windings. Higher rated voltages require higher insulation requirements for electromagnetic wires. In order to meet the dual requirements of winding slot fullness and insulation specifications, almost all high-voltage motors The stator windings all use flat wire windings. The inherent cross-sectional characteristics of flat wire windings also better meet the smooth execution of winding, forming and other processes in the coil manufacturing process.
According to statistical calculations by professional manufacturers, the slot fill rate of flat wire technology windings can be increased by about 25% compared to round wire windings. From the perspective of motor efficiency control, copper losses can be significantly reduced and motor efficiency can be significantly improved. In addition, choose a punched groove shape that matches the shape of the coil. Under the same volume, the flat wire winding and the iron core fit better, so as to effectively prevent vibration problems during motor operation. In addition, the relatively fixed molding effect of flat wire windings can more effectively reduce the winding end size, which is beneficial to motor manufacturing costs and efficiency improvements.
In addition to large-scale high-voltage industrial motors using electromagnetic flat wire windings, most current automotive motors also use flat winding card-issuing technology, which also better meets the stringent requirements of electric vehicles for motor power density and efficiency.
