On the basis of design a sycnhronous motor is complex, it requires more maintenance and handling than induction motor. While synchronous motors have higher efficiency and no slip, induction motors have good starting torque. Difference between Induction motor and Synchronous motor Before go through this article learn briefly about induction motor and synchronous motor. 10. Difference Between Synchronous Motor and Induction Motor The motor is costly and requires frequent maintenance. RPM: Synchronous motors are economical for speeds below 300 RPM. Its stator winding is energized from an ac source. This is why induction motors are also known as asynchronous motors. For the same output and … Its torque is more sensitive to changes in supply voltage. An induction motor has less starting torque. For given frequency synchronous motor runs at a constant speed (synchronous speed), the speed of the motor does not depend on the motor Load. Wherever in induction motor speed decreases as increasing the motor load. The induction motor is used to drive mechanical loads only. Induction vs Synchronous Machines - Engineering Scribbles Just like the synchronous motors, induction motors also consist of a set of stator windings that are connected to a 3-phase alternating power supply. Difference between Induction Motor and Synchronous Motor The main difference between induction motor and synchronous motor is that synchronous motor needs an exterior dc supply. Top 10 Differences: Difference Between Induction and … Synchronous motors require an additional starting mechanism to rotate the rotor near to the Synchronous speed initially. Comparison of Linear Synchronous and Induction Motors Difference between Synchronous Motor and Induction Motor A synchronous motor is costlier than an induction motor of the same output and voltage rating. It lacks a dc source. Starting Torque: A synchronous motor has high starting torque as compared to an induction motor. 16 Main Difference between Synchronous and Induction Motors Conversely, the long-stator linear induction motor utilizes an armature winding in the guideway creating the traveling wave, and a short, reaction rail on the vehicle. The induction motors are the types of asynchronous motors. The power factor is low at light loads. Synchronous motor delivers torque and power when it is running at synchronous speed. Whereas IM cannot be used to improve the power factor. Difference Between Synchronous motor and Induction Motor It is so called because it never runs at synchronous speed. Difference between Synchronous Motor and Induction Motor The power factor of a synchronous motor can be adjusted to lagging, unity, … For synchronous motors, we have to separate excitation system, governing system, sophisticated startup arrangement. Synchronous motor works on the principle of magnetic locking. Motor is sensitive to system disturbances and sudden changes of load, and loses its synchronism under extreme conditions. The fundamental difference between these two motors is that the speed of the rotor relative to the speed of the stator is equal for synchronous motors, while the rotor speed in induction motors is less than its synchronous speed. Motor is less sensitive to system disturbances and sudden changes of load. No excitation for the rotors. Capex is lower for induction while Opex is lower for synchronous. The synchronous motor has no starting torque. Difference Between Induction Motor and Synchronous Motor Single-phase induction motors are used for residential and commercial applications, but industry relies on the three-phase induction motor for its smooth operation and higher efficiency. Comparatively, the motor is costlier. Synchronous motors are costlier, almost 25% of the motors cost goes to rotor windings, but induction motors are cheaper. The induction motor and synchronous motor are AC motors. Synchronous motors best serve their purpose in larger applications, whereas Groschopp specializes in fractional horsepower motors, which typically don’t require synchronous motor attributes. 1. Synchronous motors require a DC power source for the rotor excitation. Difference between Synchronous Motor and Induction Motor Synchronous motors run at constant speed at any load for a given frequency. The AC motors are sub-divided into two major categories which include synchronous and induction motors (also known as asynchronous motor) which are quite different from each another. So, guys, these are some differences between the synchronous motor and induction motor. The induction motor is a widely used motor in industries. The rotor is … 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. Induction Motor vs Synchronous Motor - Find Authority An induction motor have simple construction than a synchronous motor. these motors run at a speed slightly less than the synchronous speed. Single-phase induction motors are used for residential and commercial applications, but industry relies on the three-phase induction motor for its smooth operation and higher efficiency. The synchronous motor converts electrical power into mechanical power. Synchronous motor delivers torque and power when it is running at synchronous speed. An Induction motor operates only at a lagging power factor. The motor is much cheaper. Difference Between Synchronous Motor And Induction Motor Induction motor works on the principle of electromagnetic induction. Its speed can be controlled using a separate circuit. Difference Between Synchronous Motor and Induction Motor Synchronous & Induction Motors: Discovering the Difference It is a singly excited machine. Induction Motor. It is used by various power plants, industries and machineries. Difference between Synchronous motor and Induction motor The induction motors are economical for speeds above 600 RPM. Synchronous vs induction motors - turbomachinerymag.com 02: Motor Speed: Synchronous motor runs at the synchronous speed. Difference between synchronous motor and induction motor The synchronous motor is a doubly excited machine. It runs at a constant speed known as synchronous speed for a given frequency even after increasing the load. In this article, we will explain the difference between the induction motor and synchronous motor. The motor is cheap, especially cage rotors and maintenance-free. What’s the difference between induction and synchronous motors … The actual speed of the induction motor falls slightly with increase in load. 2. Difference Between Induction Motor and Synchronous Motor There is no need of slip ring and carbon brushes that make its construction simplest. Further, the operation is simpler. Synchronous Motors vs Induction Motors - BOSS Magazine They both contain a stator that creates a rotating magnetic field and a rotor that spins in response. An Induction Motor is also known as Asynchronous Motor. MV = High Efficiency +1~2%. Synchronous motors need an additional power source to power rotor winding, while induction motors do not require any other power source. Induction motors can be run with lagging power factor only. Synchronous motors VS induction motors - Gozuk Slip rings and carbon brushes are connected with the synchronous motor. So, in the case of synchronous motors, instead of generating a Lorentz Force, we lock the poles of the stator’s DC electro-magnet with the rotating 3-phase’s field. Comparison between Synchronous Motor and 3-Phase Induction … i.e., Ns = 120f/P. More about Induction Motors. At start up the stator winding at 50 Hz with a two pole construction, provides a rotating field at 3000 revs per minute. The induction motor is a type of single excited machine, whereas, the synchronous motor is a type of doubly excited machine. Synchronous Motor vs. Induction Motor Cost and Maintenance – The SM is very costly and synchronous motor frequent maintenance is required whereas the cost of IM is cheap and the maintenance of motor is not required. No starting mechanism is required in induction motors. Difference Between Induction Motor and Synchronous Motor The induction motor is easy to start … Difference Between Induction and Synchronous Motor - Hermitage … As the name implies, the asynchronous motors are the ones whose speed is not equal to synchronous speed, i.e. Synchronous motors are having better efficiency, than induction motors. The induction motor efficiency is slightly lower and capacitor banks have to be provided to improve the power factor. The exact size of preference to switch to Synchronous shall be determined based on LCC analysis of specific application. The synchronous motor converts electrical power into mechanical power. However, synchronous motors are the more efficient option, although they are typically more pricey. Synchronous motor can also be used for power factor correction apart from supplying mechanical loads. An induction motor is cheaper than the synchronous motor of the same output and voltage rating. An electrical motor is a machine which transforms the electrical power into mechanical power. It is not self starting. The induction motor does not require an excitation system to start motor. Difference between Induction Motor and Synchronous Motor 3-Phase Induction Motor: Synchronous Motor: It is self starting. Slip is nearly zero at zero load torque and increases as load torque increases. Its stator is excited using an AC supply. Synchronous Motor is a doubly excited machine, whose armature winding is energised from AC source and its field winding is energised from DC source. Whereas Induction Motor is a single excited machine and its winding are energised from an AC source. Differences Between Synchronous & Induction (Asynchronous) Motor. Differences Between Synchronous & Induction Motor – All About … The electromagnetic motor which converts electrical energy into mechanical work at variable speed is called as a ‘Induction Motor’. Synchronous motors operate at synchronous speed (RPM=120f/p) while induction motors operate at less than synchronous speed (RPM=120f/p – slip). The induction motor is cheaper by about 30 to 40%. The Synchronous Motor requires the DC excitation system (or prime mover) to start the motor (i.e. 2- A Large reciprocating compressor is a highly variable load and a synchronous motor will keep its speed in this situation while the induction motor would respond with fluctuating speed. The synchronous motor can be operated with lagging and leading power factors. Furthermore, synchronous motors require slip rings and brushes, while induction motors don’t. Synchronous Machines (Motor) Operation Principle. Although its speed depends on more than just the line frequency, It decreases with increasing the load. Synchronous motor are not self starting and the method used for stating synchronous motor are using a pony motor, damper windings, used as a slip ring induction motor. The setup of an induction motor have some similarities to the setup of a synchronous motor. stator linear synchronous motor. Power factor is lagging in induction motor and unity in synchronous motor. 03: Principle: The synchronous motor works on the principle of the ‘Magnetic Locking’. AC Motor Types: Synchronous Motor & Induction Motor The synchronous motor always runs on the synchronous speed. 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. What is an Induction Motor. The induction motor is a single excited machine. Based on the principles of electromagnetic induction, the first induction motors were invented by Nikola Tesla (in 1883) and Galileo Ferraris (in 1885), independently.