3-The possibility of increasing the load on them is high. Induction Motor vs. Synchronous Motor. The synchronous motor also requires active matching of torque demand with motor output. The three phase supply, when given to the stator windings, creates a rotating magnetic field. The damper winding is used in the pole face of rotor in order to dampen oscillations. The induction motor also recognized as the synchronous motor. Shaded-pole synchronous motors are a class of AC motors.. Like a shaded pole induction motor, they use field coils with additional copper shading coils (see the illustration) to produce a weakly rotating magnetic field.But unlike a shaded pole induction motor (which uses a squirrel cage rotor), the synchronous version of this motor uses a magnetized rotor. Induction motors. The synchronous motor converts electrical power into mechanical power. Synchronous reluctance motors are a step forward compared to permanent magnet motors when the cost of the system is considered. The synchronous motor always runs on the synchronous speed. They both contain a stator which creates a rotating magnetic field, and a rotor that rotates in response. No excitation for the rotors. Power factor is lagging in induction motor and unity in synchronous motor. The synchronous motor has no starting torque. Its stator is excited using an AC supply. Synchronous motors fall under the more general category of synchronous machines which also includes the synchronous generator.Generator action will be observed if the field poles are "driven ahead of the resultant air-gap flux by the forward motion of the prime mover". Synchronous motors are only really needed when the speed must be maintained at a precisely constant RPM. ... Synchronous motors, and switched reluctance operation. It follows the relation N = N S = 120f/P, where N is the rotor speed and Ns is the synchronous speed.. Asynchronous motor is an AC Induction motor. The squirrel cage winding of a synchronous machine will generally be smaller than for an induction machine of similar rating. The induction motor and synchronous motor are AC motors. Let’s move on to induction motor drives. The aim of this paper is to investigate and compare the torque behavior of induction motors and transverse laminated synchronous reluctance motors. Synchronous motor is a motor that operates at synchronous speed, i.e. This is because an induction motor always has a speed less than the synchronous speed and for it to become equal to the synchronous speed of the synchronous motor… Using induction motor for vehicle at this current time is not a bad idea as we don't have much alternative to get a better high power (magnetic flux) magnet. In 1879, GE founder, Thomas Edison constructed the first electric motor for a 110 to 120 Volt line at Menlo Park, NJ. 1-Set up asynchronous motor with rotor synchronous motor , unlike the very simple shelf. induction motor drive and the long-stator linear synchronous motor drive, in particular, the most mature drives presently being installed and implemented for transportation, which are the LIM- driven, Chubu HSST and LSM-driven Transrapid maglev systems. Synchronous motor delivers torque and power when it is running at synchronous speed. Curiously, the stators for the 3-phase induction motor and the DC brushless motor … Synchronous motors are characterized by limited starting torque, the ability to actively control power factor and less current in-rush than the induction motor. However, if the consistency of synchronous is what is desired, this disadvantage of AC induction motors can be overcome using a variable frequency drive (VFD) or a vector drive. With AC induction motors, you must consider the rotor’s speed relative to the incoming frequency of AC power. They... Synchronous motors. Induction motors and synchronous motors are two different types of AC motors. Type. Synchronous motor Synchronous motor is an AC motor that generates a torque by a DC-powered excitation magnetic field that interacts with a rotating magnetic field of the armature to rotate at a synchronous speed. Each induction motor is compared with a synchronous reluctance motor, that has the same stator lamination and winding but, obviously, different rotor. An Induction Motor is an AC electric motor in which the electric current in the rotor is produced by electromagnetic induction from the magnetic field of the stator winding. Synchronous motor: Always turns at synchronous speed and its slip = 0; Induction motor: Its slip is always higher than zero but lower than 1; Other Differences. An induction motor operates at a speed that is usually about 2 or 3 percent less than synchronous speed when it is delivering rated torque, but at nearly synchronous speed when operating unloaded. These motors can be designed to operate on alternating current (AC) or direct current (DC). Synchronous Motor: 3Φ Induction Motor: By MePaJa – Own work, CC BY-SA 4.0, Link By Zureks – Own work, CC BY-SA 3.0, Link Synchronous motor is a doubly excited machine which requires a DC excitation at the rotor. Main Difference – Induction Motor vs. Synchronous Motor. Induction motor is a simple, rugged and one of the most popular motors in the electrical industry. Induction motors are considered one of, if not the most prolific AC motor used in industry today. Induction motors are also known as asynchronous motors because the speed of spin is not synchronized to the frequency of the power as is the case with synchronous motors. Induction Motors - What's the Difference? In this article, we will explain the difference between the induction motor and synchronous motor.