Power loss analysis of axial flow pump driven by permanent magnet synchronous motor
The permanent magnet synchronous motor driven axial flow pump is an efficient and energy-saving power transmission system, but in actual operation, there is still a certain power loss. The power loss mainly includes motor iron loss, copper loss, mechanical loss and rotor loss.
First, the motor iron loss is the energy loss caused by the alternating magnetic field obstruction and eddy current natural action of the electromagnet center. Iron loss is related to the processing material of the motor. The use of high-quality silicon steel materials and optimization of circuit processing working current density can reduce iron loss.
Secondly, copper loss is due to the resistance loss generated when passing through the motor winding. Copper loss can be reduced by improving the motor control algorithm, reducing the current harmonic content and reducing resistance loss.
Mechanical loss mainly comes from mechanical friction and sealing friction. Reasonable selection of bearings and reduction of friction in the design of mechanical friction components can effectively reduce mechanical loss.
Finally, rotor loss is due to eddy current loss and Joule heat loss generated when the rotor moves in the magnetic field. Rotor loss can be reduced by reasonable design of rotor structure and materials.
In summary, for permanent magnet synchronous motor driven axial flow pumps, reducing power loss is a key factor in the system and reducing energy consumption. By optimizing motor design and control strategy, the power loss of the motor can be reduced and the overall system performance can be improved.
