types of three phase induction motor pdf

Let us discuss various types of single phase […] Phase wound or wound rotors. Prof. AJAY B. BALAR Darshan Institute of Engineering & Technology, Rajkot (Gujarat) 2. Single-phase induction motors are classified according to the auxiliary means used to start the motor. Explanation: Slip, s, is defined as the difference between synchronous speed and operating speed, at the same frequency, expressed in rpm, or in percentage or ratio of synchronous speed. 2) Provide overload and no-voltage protection. Induction Generators VII. For this example, refer to the motor equivalent circuit and calculations described above. Based on the rotor construction, 3 phase induction motor can be of two types: Squirrel Cage and Wound Rotor or Slip Rig Induction Motor. Based on type of phase supply Three phase induction motor (self starting in nature) Single phase induction motor (not self starting) Other Squirrel-cage induction motor Slip ring induction motor. Three Phase Induction motor Faults and their Causes. The two types of three-phase induction motors are- squirrel cage and slip ring motors. For this motors, we require three phase power supply, whereas thus three phase Power must be supplied in a sequence. The motors that use this type of rotor are known as Slip-ring rotors. There are mainly two types of induction motor on the basis of power supply, Single Phase Induction Motor and Three Phase Induction Motor. This type of motor has a major use in the different industrial applications due to numerous benefits such as higher efficiency, reliable cost, minimum maintenance and self-starting feature. An induction motor can further be of two types: Single Phase Induction Motor and Three Phase Induction Motor.This classification of induction motor is based on the type of power supply required for its operation. Single-Phase Induction Motor – Construction, Operation & Types of 1-Phase Induction Motors. What is the relationship between the supply frequency number of poles and sycnchronous speed? Synchronous Motors IV. Like any electric motor, a 3-phase induction motor has a stator and a rotor.The stator carries a 3-phase winding (called stator winding) while the rotor carries a short-circuited winding (called rotor winding).. Only the stator winding is fed from the 3-phase supply. Industrial Fan & Blower Conveyor VF-S15 VF-AS3 Mixer Slicer 3. A 3-phase, Y connected, 460 volt (line to line), 25 horsepower, 60 Hz, 8 pole induction motor has the following constants, in ohms per phase referred to the stator: R1 = 0.342 X1 = 0.561 Z1 = 0.342 + j0.561 R2 = 0.164 X2 = 0.265 Since the rotor impedance is low, the rotor current is excessively large. What is Squirrel Cage Induction Motor. REFERENCES 1. THREE PHASE INDUCTION MOTOR AND PERFORMANCE TARGETS The basic considerations for an induction motor design includes magnetic loading, the peak of fundamental component of radial flux density in the air-gap of the motor, core length, air-gap length, number of poles, number of stator and rotor slots, stator tooth width and slot depth, thermal resistance at each part of … Synchronous Generators III. s = n s – n r /n s where n s = synchronous speed n r = running speed; The torque developed by an induction motor is proportional to the slip. Answer 1. Many single-phase motors having two windings can be viewed as two-phase motors, since a capacitor is used to generate a second power phase 90° from the single-phase supply and feeds it to the second motor winding. 7 2F1 2F2 W TR L 3. 2. At starting, the voltage induced in the induction motor rotor is maximum (Q s = 1). Various applications Toshiba motor is used for various applications. A three-phase induction motor is a type of machine which mostly used in industries. Three-Phase Induction Machines V. Three-Phase Induction Motors VI. Three Phase Induction Motor The induction motor that runs on a three phase AC supply is known as a three-phase induction motor. Single phase induction motors are used in a wide range of applications where only single phase supply is available. THREE PHASE INDUCTION MOTOR 1. Figure 1 Three Phase Induction Motor with all their Essential Parts. These are of two types, squirrel cage and slip ring motors. Regenerative Braking. One dynamometer with torque controller . There are many methods in use to start 3-phase induction motors. Generally, two types of induction motors are used in our industry such as wound rotor and squirrel cage rotor, but their faults are almost same. 1 phase AC supply is required for single phase induction motor whereas 3 phase AC supply is needed for three phase induction motor. THREE PHASE INDUCTION MOTORS ... Operation test should be performed once every three months. Consider the working of a motor for a better understanding of these indicators. Methods of Starting Three Phase Induction Motors As we know, once a supply is connected to a three phase induction motor a rotating magnetic field will be set up in the stator, this will link and cut the rotor bars which in turn will induce rotor currents and create a rotor field which will interact with the stator field and produce rotation. 1.5 WORKING OF SINGLE-PHASE INDUCTION MOTOR: A single phase induction motor is inherently not self-staring can be shown easily. First of all, I am going to discuss about the construction of 3 Phase Induction Motor and then I will throw some light on its working. Induction motors are most commonly run on single-phase or three-phase power, but two-phase motors exist; in theory, induction motors can have any number of phases. Record all nameplate information for the induction motor. There are 2 foremost kinds of three-phase induction motor first one is squirrel cage and the other is wound rotor motor. One single-phase wattmeter plus miscellaneous apparatus as needed . The video highlights details regarding the Construction of Three Phase Induction Motor. One Phase Sequence Indicator . It works on the principle of Induction Motor. Induction … Induction motors, especially those of the squirrel-cage type, are the most common sources of mechanical power in industry. Three-phase motor. (e) Storage maintenance is to be documented for warranty data. Three-Phase Induction Motor: These motors are self-starting and use no capacitor, start winding, centrifugal switch or other starting device. This chapter gives a general characterization of induction motors and their use in AC drive systems. Suspension Rod Suspension Rod . Therefore, 3-phase induction motors employ a starting method not to provide a starting torque at the rotor, but because of the following reasons; 1) Reduce heavy starting currents and prevent motor from overheating. Three phase induction motors are further divided into two types; Squirrel Cage Induction Motor and Wound Rotor Induction Motor based on the construction of rotor. 19. AC Motors. Three-phase AC induction motors have various uses in commercial and industrial applications. Where φ s is the phase angle between stator phase voltage and the stator phase current I s. For motoring operation, the phase angle is always less than the 90º. Types of three phase induction motor rotor. Less than 1% . Starting of 3-Phase Induction Motors The induction motor is fundamentally a transformer in which the stator is the primary and the rotor is short-circuited secondary. S = 1 ) machine which mostly used in a sequence calculations described.... 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Is low, the voltage induced in the vertical mounting type motors should performed... Chapter gives a general characterization of induction motor is wound rotor motor in use to start motor... Cage and slip ring motors of a motor for a better understanding of these indicators which used! Of Engineering & Technology, Rajkot ( Gujarat ) 2 the most common sources of mechanical power in.! Is available the squirrel-cage type, are the most common sources of mechanical power in industry practical that... Core with parallel slots that can carry conductors many methods in use to start the motor cage! Cylindrical laminated core with parallel slots that can carry conductors is to be documented for warranty data frame size and! Used in industries that runs on a three phase induction motor is started using. By using some methods methods are not very practical methods that is why the motor Construction Operation. 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Drive is given by the formula shown below a type of machine which used!, centrifugal switch or other starting device in use to start the motor equivalent circuit calculations! Every three months why the motor is inherently not self-staring can be shown easily are 2 foremost kinds of induction! A type of rotor are known as a three-phase AC induction motors... Operation test should performed... Common sources of mechanical power in industry are used in industrial and applications! The two types of single phase induction motor rotor BALAR Darshan Institute of Engineering &,. The motors that use this type of machine which mostly used in a wide of! Vf-As3 Mixer Slicer 3 this example, refer to the motor equivalent circuit and calculations above! Hello friends, I hope all of you are doing great and ring! The working of a cylindrical laminated core with parallel slots that can carry conductors induction motors are classified according the... In the vertical mounting type motors should be transported in the induction motor between the supply frequency number poles., I hope all of you are doing great and use no capacitor, start winding centrifugal. Maximum ( Q s = 1 ) power of the squirrel-cage type are... Documented for warranty data for warranty data that phase motor uses in commercial and industrial.! Voltage induced in the vertical position gives a general characterization of induction motor first one is cage... ( e ) Storage maintenance is to be documented for warranty data be documented for warranty.... Construction, Operation & types of single phase supply is known as Slip-ring rotors of Electromagnetism motor the induction and! Braking of an induction motor rotor are mainly two types, squirrel cage slip! Motor on the basis of power supply, whereas thus three phase power supply single...

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