What Is Back-EMF?

Motors are indispensable in manufacturing lines and Industrial equipment, but heat generation during operation is an unavoidable phenomenon. However, excessive heat can shorten a motor’s lifespan and, in the worst cases, lead to serious problems such as malfunctions or fires. Motor heat generation is caused by losses such as copper loss, iron loss, and mechanical loss, ...

In manufacturing facilities and equipment operations, sudden abnormal noises from motors can lead to serious issues such as equipment shutdowns and product defects. These noises vary widely—including “squeaking,” “grinding,” and “hissing”—and each has a different cause. Sources range from mechanical factors like bearing wear, insufficient lubrication, and debris ingress ...

In product development involving motors, a proper understanding of the relationship between voltage and motor performance is the foundation for efficient motor selection and design. How do the motor’s speed and torque change when the applied voltage is varied, and how do these relate to electric current? Without a grasp of these fundamental characteristics, it is imposs...