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Explosion proof permanent magnet axial electric pump, with various fully automatic functions, belongs to the new generation of DC frequency conversion technology electric pump. The electric pump has a small volume and light weight. It can reach 4-5 times the power of asynchronous motors of the same specification at 5000 rpm, and more than twice the power of asynchronous motors of the same specification at 3000 rpm. The efficiency is over 90%, meeting the national second level energy consumption standard.

1. Low loss and low temperature rise

Due to the fact that the magnetic field of the electric pump is generated by permanent magnets, it avoids excitation losses caused by magnetic field generation through excitation current, namely copper losses; The rotor operates without current, significantly reducing the temperature rise of the motor. Under the same load conditions, the temperature rise is reduced by more than 20K.

2. High power factor

The power factor of the electric pump is high and independent of the number of stages of the motor. When the motor is at full load, the power factor is close to 1. Compared with asynchronous motors, the motor current is smaller, resulting in lower stator copper consumption and higher efficiency. As the number of motor stages increases, the power factor of asynchronous motors decreases. Moreover, due to the high power factor of permanent magnet synchronous motors, the capacity of the power supply (transformer) that the motor is equipped with can theoretically be reduced, while also reducing the specifications of the supporting switchgear and cables.

3. High efficiency

Compared to asynchronous motors, electric pumps have much higher efficiency values under light loads, with a wide range of efficient operation. The efficiency is greater than 90% in the range of 25% to 120%. The rated efficiency of permanent magnet synchronous motors can meet the current national standard's Level 1 energy efficiency requirements, which is their biggest advantage in energy conservation compared to asynchronous motors. In actual operation, electric motors rarely operate at full power when driving loads. The reason is that, on the one hand, designers usually determine the motor power based on the extreme operating conditions of the load when selecting the motor, and the occurrence of extreme operating conditions is rare. At the same time, in order to prevent the motor from being burned out in abnormal operating conditions, the design will further leave margin for the power of the motor; On the other hand, in order to ensure the reliability of the motor, motor manufacturers usually leave a certain power margin on the basis of the power required by the user.

4. Other advantages

Electric pumps also have the advantages of high starting torque, short starting time, and high overload capacity. They can reduce the installed capacity of equipment driven motors based on actual shaft power, save energy, and reduce fixed asset investment. The permanent magnet synchronous motor is easy to control, with a constant speed that does not vary with load fluctuations or voltage fluctuations, but only depends on frequency, ensuring smooth and reliable operation. Due to strict speed synchronization and good dynamic response performance, it is suitable for variable frequency control.