Our AC Motors include Induction and Synchronous types. Synchronous are AC Motors designed to run at a constant speed up to the torque break point. AC synchronous motors are called "Line Locked" which means they rotate at a speed that is a multiple of the power line frequency. A 3600RPM/60hz synchronous AC Motor would run at 3000 RPM at 50Hz. This is the thought behind the use of Variable Frequency Drives in industrial applications and machine tools. Synchronous AC Motors are used in clocks, Power factor correction and other RPM critical applications. Induction AC motors are the most common and cheapest of the consumer motors. Induction AC Motors are used in vacuum cleaners, fans and pumps, etc. These AC Motors are loosely line locked but are designed to run at non synchronous speeds and torques. AC Motors are less sensitive to input voltage and at no load will run at near rated RPM over a large voltage range. What is lost is torque. Speed control is accomplished by limiting the On Time and voltage of the AC waveform. The load will drive down the average speed at lower On Time and Voltage; roughly similar to PWM in a DC Motor. Max speed & torque is at normal full AC waveform and voltage applied. AC Motor with Gearhead is another method to increase or decrease speed range and resultant torque.
AC MotorsOur AC Motors include Induction and Synchronous types. Synchronous are AC Motors designed to run at a constant speed up to the torque break point.AC Motors, Industriual AC Synchronous Motors, Gearhead Motors