In modern industrial and transportation systems, permanent magnet motors have been widely used due to their superior performance and efficient energy conversion capabilities.With the advancement of Mingteng’s technical capabilities and production processes, Mingteng permanent magnet motors are becoming more and more widely used in various fields, especially in various working conditions in various fields such as mining, steel, electricity, petrochemicals, cement, coal, rubber, etc., with outstanding performance and won wide acclaim from users. The following will briefly introduce the performance of Anhui Mingteng permanent magnet motors from several aspects.

1.Efficiency

Efficiency is an important indicator for evaluating motor performance. It is usually expressed as efficiency (η), which is defined as the ratio of motor output power to input power.In permanent magnet motors, since the rotor is constructed of permanent magnetic materials, both mechanical and electrical losses are low, so its efficiency is relatively high.Modern high-performance permanent magnet motors typically have efficiencies of over 90%, with some high-end products reaching 95% or more.High efficiency not only improves the working performance of the motor, but also effectively reduces energy consumption and reduces operating costs.The efficiency of the motor is equal to (output power/input power)*100%. The energy lost between the output power and the input power is the main component of efficiency loss: stator copper loss, iron loss, rotor copper loss, wind friction loss and stray loss. Compared with ordinary induction motors, Anhui Mingteng permanent magnet motors have lower stator copper loss, rotor copper loss to 0, lower wind friction loss, significantly reduced losses, improved efficiency, and energy saving.

2.Power Density

Power density is another important performance indicator, which refers to the power that can be provided per unit volume or unit weight.The power density of permanent magnet motors is generally better than that of traditional synchronous motors and asynchronous motors, which allows them to achieve smaller size and lighter weight at the same power level.Permanent magnet motors can achieve very high power density, and their size and weight are smaller than asynchronous motors.When the load rate of ordinary asynchronous motors is <50%, their operating efficiency and power factor drop significantly. When the load rate of Mingteng permanent magnet synchronous motors is 25%-120%, their operating efficiency and power factor do not change much, and the operating efficiency is >90%, the power factor is ﹥0.85, the motor power factor is high, the grid quality factor is high, and there is no need to add a power factor compensator. The capacity of the substation equipment can be fully utilized, and the energy-saving effect is significant at light load, variable load and full load.

3.Speed characteristics

The speed characteristics of permanent magnet motors are also an important aspect of performance evaluation.Generally speaking, permanent magnet motors have a wide speed range and can operate stably under different working conditions.At high speeds, the performance of permanent magnet motors is more outstanding. Since their rotors do not require current excitation, they can achieve high-efficiency operation at higher speeds. In addition, permanent magnet motors have strong transient response capabilities and can respond quickly to load changes, making them suitable for applications that require high dynamic performance.The permanent magnet motor is excited by permanent magnets, operates synchronously, has no speed pulsation, and does not increase pipeline resistance when driving loads such as fans and pumps. Adding a driver can achieve soft start, soft stop, and stepless speed regulation, with good dynamic response and further improved power saving effect.

4.Temperature rise characteristics

In the long-term operation of the motor, temperature rise is an important factor that cannot be ignored. Excessive temperature rise may cause the insulation material of the motor to age, thereby reducing its service life. Permanent magnet motors usually have good heat dissipation performance and low temperature rise due to their special design. During the design stage, the implementation of reasonable cooling measures, such as air cooling or water cooling, can further improve the working stability and safety of the motor. In addition, the introduction of new permanent magnet materials has also improved the working ability of the motor in high temperature environments to a certain extent.

5.Cost-effectiveness

Although permanent magnet motors have many advantages in performance, their cost issues also need to be taken seriously. The cost of permanent magnet materials is relatively high, especially some high-performance rare earth permanent magnet materials, which has inhibited the pace of their market penetration to a certain extent. Therefore, when choosing permanent magnet motors, companies need to comprehensively consider their performance advantages and material costs to ensure that reasonable economic benefits are achieved on the basis of meeting performance requirements.

As a type of efficient motor, the performance evaluation of permanent magnet motors involves many aspects, including efficiency, power density, speed characteristics, temperature rise characteristics and cost-effectiveness. In practical applications, companies should choose suitable permanent magnet motors according to specific needs to achieve the best working results and economic benefits.