Electric motors are indispensable in modern life—powering everything from bathroom hair dryers and campus electric scooters to large-scale industrial car-building machinery. Among a motor’s many components, the permanent magnet (PM) acts as its “power core”: it dictates the motor’s strength, size, l
Motor noise is a significant factor affecting motor performance and operating environment. It primarily consists of airborne noise, mechanical noise, and electromagnetic noise. Each noise type has its own unique source and control methods. The following is a detailed analysis of these noise types, a
General use standard asynchronous motors are designed for constant frequency and constant voltage operation. They cannot fully meet the requirements of speed regulation by a variable-frequency drive (VFD), so they cannot be used as variable-frequency motors.The impact of a VFD on a motor mainly focu