The speed of the shaded-pole motor has a significant effect on the fan power consumption. Generally speaking, there is a positive correlation between fan power consumption and speed, i.e., higher speeds generally result in higher fan power consumption.

Fan power consumption is mainly related to the following factors:

1. Mechanical load: Higher speeds increase the mechanical load required by the shaded-pole motor to drive the fan. Mechanical load is the friction and resistance between the rotating parts inside the motor and the fan, which is overcome to maintain the rotation of the fan. Higher speeds require more energy to overcome these resistances, resulting in increased fan power consumption.

2. Air resistance: As the fan speed increases, the airflow velocity generated by the fan blades also increases. Higher airflow velocities lead to increased air resistance and require more energy to maintain the operation of the fan. Therefore, higher shaded-pole motor speeds lead to increased fan power consumption.

3. Motor efficiency: The efficiency of the shaded-pole motor generally decreases as the speed increases. Higher speeds result in increased energy losses inside the motor and decreased efficiency. This also has a negative impact on the fan power consumption, because more input energy is converted into internal losses instead of being effectively used to drive the fan.

It should be noted that shaded pole motors and fans of different models and designs have different power consumption characteristics. Therefore, the specific degree of impact will vary from case to case. In practical applications, oven manufacturers usually consider power consumption efficiency when designing and selecting shaded pole motors to balance the requirements of air circulation and energy efficiency.