I'm sure everyone knows that motors have a lot of wear and tear, and electricity consumption is also very expensive. But do you know the main places that consume electricity? This mainly includes the gears and rotating bearings in variable frequency speed control motors. Based on existing capabilities and taking various measures to tap into potential, reduce losses, and improve motor efficiency, the first step in energy conservation is to start with material conservation. Increase effective materials and reduce consumption of copper and iron. For high-efficiency motors, the efficiency index is greatly improved. In order to reduce winding loss and core loss, it is necessary to reduce current density and Magnetic flux density properly. Therefore, the cross-sectional area of the conductor and the length of the core correspondingly increase, and for some machine bases, the outer diameter of the punched sheet increases, thereby increasing the effective material consumption. Reasonably control the temperature rise of the motor. Because the temperature rise is influenced by the amount of material used and mechanical loss, while the material remains unchanged, the temperature rise is reduced by increasing the cooling air volume. As the temperature rise decreases, the copper losses of the stator and rotor decrease, while the mechanical losses increase. If the decrease in copper losses of the stator and rotor is greater than the increase in mechanical losses, efficiency will increase and efficiency will decrease. Therefore, reasonable control of temperature rise plays a crucial role in improving the efficiency of high-efficiency motors.
Energy saving methods:
1. Use relatively high-grade magnetic materials to reduce material consumption. Due to certain limitations in axial size and center height, simply adding effective materials cannot achieve the goal of significantly reducing iron consumption. Therefore, it is necessary to choose cold rolled silicon steel sheets with lower losses, which is particularly important for motors of medium to high power specifications, in order to achieve energy-saving effects.
2. Reasonably control the temperature rise of the motor. Because the temperature rise is influenced by the amount of material used and mechanical loss, while the material remains unchanged, the temperature rise is reduced by increasing the cooling air volume. It is best to choose a connection line that is always connected to the rated voltage and current of the motor, which can increase the normal operation of the variable frequency speed regulation motor. Therefore, reasonable control of temperature rise plays a crucial role in improving the efficiency of the variable frequency speed regulation motor.
3. When the harmonic magnetic field moves relative to the surface of the iron core, eddy current loss and hysteresis loss will occur near the surface of the iron core steel plate by changing the gap matching. Therefore, it is called surface loss, where eddy current loss is the main loss. This loss is related to the amplitude and frequency of the harmonic magnetic field. The amplitude and frequency are influenced by the number of slots, so this part of the loss is related to the stator and rotor.
4. Reasonably utilize variable frequency speed control motors. There are many places where variable frequency speed control motors are used, but some industries do not use variable frequency speed control motors and have not dealt with them in a timely manner, causing the motor to remain in a state of non operation but the current is still flowing. At this time, it is necessary to treat the connection or close the switch, which can also play a certain energy-saving role.
