Drive motor shaft How to reduce energy loss and improve overall work efficiency?
Publish Time: 2025-04-02
Drive motor shaft The methods to reduce energy loss and improve overall work efficiency mainly involve motor design, material selection, process optimization, operation and maintenance.1. Motor design optimizationIncrease effective materials: According to the principle of motor similarity, when the electromagnetic load remains unchanged and mechanical loss is not considered, the loss of the motor is approximately proportional to the cube of the linear size of the motor. Therefore, within the limited installation size, the efficiency of the motor can be improved by increasing the amount of effective materials (such as copper, iron, etc.). Optimize the outer diameter size of the stator punching to obtain a larger output within the same machine base range, which is also conducive to heat dissipation and temperature rise reduction.Use high-performance magnetic materials: Select magnetic materials with good magnetic conductivity, such as cold-rolled silicon steel sheets, to reduce core loss. Use new electrical steel sheets, which have a lower average unit loss, even lower than some low-silicon steel sheets, and have a higher magnetic permeability.Optimize winding design: Use Y-Δ series-connected sinusoidal windings or other low-harmonic windings to reduce the amplitude of harmonics in each phase band, thereby reducing stray losses. Increase the cross-sectional area of the stator slots, improve the stator slot fullness rate, and shorten the length of the stator winding ends to reduce the stator copper loss.2. Material selection and process optimizationRotor material optimization: For the rotor, use low-resistance materials (such as cast copper rotors) to reduce the resistance of the rotor windings, thereby reducing the rotor copper loss. Although the manufacturing temperature of cast copper rotors is high, the technology is not popular, and the cost is high, the effect of reducing losses is significant. By controlling the pressure, temperature, and gas discharge path of the rotor during aluminum casting, the gas in the rotor bars is reduced, the conductivity is increased, and the rotor loss is further reduced.Core process optimization: Reduce the magnetic density and increase the core length, but the amount of iron needs to be weighed. Reduce the thickness of the iron core, such as using cold-rolled silicon steel sheets instead of hot-rolled silicon steel sheets, but it should be noted that thin iron cores may increase the number of iron cores and the manufacturing cost of the motor. Use high-performance iron core insulation coating, and optimize iron core through heat treatment and manufacturing technology to reduce iron loss.3. Operation and maintenanceKeep the motor clean and check regularly: Keep the area around the motor clean and check regularly for air blockage to ensure the normal operation of the cooling system. This helps to extend the service life of the motor and reduce energy loss caused by poor heat dissipation.Lubrication system optimization: Select high-efficiency bearings and lubrication systems, and use suitable lubricants to reduce bearing wear and friction loss. Regularly maintain and replace the lubrication system to ensure that it is always in good condition.Fan design optimization: For higher-power motors, wind friction accounts for a considerable proportion. Therefore, under the condition of temperature rise, reducing the fan size can effectively reduce wind friction. Reasonably design the ventilation structure, improve ventilation efficiency, and further reduce wind friction.4. Other measuresApplication of computer optimization design: Using computer optimization design methods, reasonably determine various parameters under the constraints of cost, performance, etc., so as to obtain the maximum possible improvement in efficiency.Dual motor coordinated control: In some application scenarios, such as electric vehicles, the use of dual motor coordinated control can expand the system's high efficiency range, improve efficiency under high speed and light load conditions, and improve the efficiency of braking energy recovery.In summary, through the comprehensive application of motor design optimization, material selection and process optimization, operation and maintenance, and other measures, the energy loss of the drive motor shaft can be effectively reduced and the overall work efficiency can be improved.
