How does a Single Phase Motor perform under high load or long-term operation?

Single Phase Motor has its own characteristics when it is under high load or long-term operation.
When running under high load, the output power of a single-phase motor will be limited to a certain extent. Due to its single winding structure, its power density is lower than that of a three-phase motor. When the load exceeds its rated load, the motor may experience a decrease in speed and an increase in heat. If it is in a high-load state for a long time, it may cause the motor to overheat, thereby reducing the insulation performance and shortening the service life of the motor. In severe cases, it may even cause the motor to burn out.
In terms of long-term operation, the heat dissipation problem of single-phase motors is more critical. Long-term operation will cause a lot of heat to be generated inside the motor. If the heat dissipation is poor, the temperature will continue to rise. This will not only affect the performance of the motor, but also accelerate the aging of the internal parts of the motor. In order to ensure the reliability of long-term operation, it is usually necessary to equip the single-phase motor with a good heat dissipation device, such as a cooling fan, and ensure that the operating environment is well ventilated.
When a single-phase motor is under high load or running for a long time, its starting performance will also be affected to a certain extent. When starting under high load, the motor needs to overcome a large resistance, and it may be difficult to start or even unable to start. After long-term operation, the motor windings may be deformed or damaged due to heat, which will also affect the next starting performance.
Single-phase motors have high requirements for power supply stability when running under high load or for a long time. Voltage fluctuations or poor power quality may cause the motor's operating performance to decline, causing problems such as unstable speed and increased noise.