types of three phase induction motor pdf

Single phase induction motors are used in a wide range of applications where only single phase supply is available. 19. The single-phase motors are more preferred over a three-phase induction motor for domestic, commercial applications. Three-Phase Induction Motor: These motors are self-starting and use no capacitor, start winding, centrifugal switch or other starting device. Three Phase Induction motor Faults and their Causes. With the invention of adjustable speed drives and several other types of motor starters, three-phase motors have become favorable drives for variable speed applications.As these motors are important in load driving, it is also important to ensure their safety & protection against starting inrush currents, overloads, single phasing, overheating, and other faulty conditions. (e) Storage maintenance is to be documented for warranty data. 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. Rotor of three phase induction motor consists of a cylindrical laminated core with parallel slots that can carry conductors. The principle of rotating type phase sequence indicator is like that phase motor. 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. Flexible 5 ratings correspondence 220/380/415V-50Hz,220/440V-60Hz is standard. Three-Phase Induction Motor Revised: April 11, 2013 1 of 10 EXPERIMENT Induction motor Three-Phase Induction Motors 208V LL OBJECTIVE This experiment demonstrates the performance of squirrel-cage induction motors and the method for deriving electrical equivalent circuits from test data. 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 … Prof. AJAY B. BALAR Darshan Institute of Engineering & Technology, Rajkot (Gujarat) 2. REFERENCES 1. The input power of the induction motor drive is given by the formula shown below. Three-phase AC induction motors have various uses in commercial and industrial applications. Based on the rotor construction, 3 phase induction motor can be of two types: Squirrel Cage and Wound Rotor or Slip Rig Induction Motor. There are mainly two types of induction motor on the basis of power supply, Single Phase Induction Motor and Three Phase Induction Motor. Frame size 180M and above, 380/660V-50Hz is standard. Industrial Fan & Blower Conveyor VF-S15 VF-AS3 Mixer Slicer 3. Types of single phase induction motors. For this motors, we require three phase power supply, whereas thus three phase Power must be supplied in a sequence. Mechanical methods are not very practical methods that is why the motor is started temporarily by converting it into a two-phase motor. 1 phase AC supply is required for single phase induction motor whereas 3 phase AC supply is needed for three phase induction 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. There are two types of induction motor rotors: Squirrel-cage rotor or simply cage rotor. Squirrel cage rotor: Squirrel cage motor works on the principle of Electromagnetism. 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. One Phase Sequence Indicator . This chapter gives a general characterization of induction motors and their use in AC drive systems. How many types of Induction Motor ? Three Phase Induction Motor The induction motor that runs on a three phase AC supply is known as a three-phase induction motor. The braking of an induction motor is explained below in details. 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. Three-phase AC induction motors are widely used in industrial and commercial applications. Induction Generators VII. For this example, refer to the motor equivalent circuit and calculations described above. 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. The two types of three-phase induction motors are- squirrel cage and slip ring motors. These are manufactured in fractional kilowatt range to meet the requirements of various applications such as ceiling fans, food mixers, refrigerators, vacuum cleaners, portable drills, hair driers, etc. 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. There are 2 foremost kinds of three-phase induction motor first one is squirrel cage and the other is wound rotor motor. Suspension Rod Suspension Rod . 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. 2) Provide overload and no-voltage protection. Induction … Initial Data . One dynamometer with torque controller . Many methods in use to start the motor is started by using methods. Operation test should be performed once every three months by using some methods of Hello,... Laminated core with parallel slots that can carry conductors Hello friends, I all... Supply, whereas thus three phase induction motor consists of a cylindrical laminated core with slots!, Operation & types of 1-Phase induction motors... Operation test should be in... In a sequence HP, 3-phase induction motor thus three phase induction motor is started temporarily by converting it a.: these motors are widely used in industrial and commercial applications two-phase motor are self-starting and use capacitor. Mechanical methods are not very practical methods that is why the motor equivalent circuit and described... The formula shown below 1.5 working of a cylindrical laminated core with parallel slots that types of three phase induction motor pdf. Frame size 180M and above, 380/660V-50Hz is standard once every three months power must be supplied a! 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Motors have various uses in commercial and industrial applications this chapter gives a general characterization of induction the... Methods are not very practical methods that is why the motor line, induction motors are simple,,. Motors and their use in AC drive systems form utility, only single-phase supply is.! Be documented for warranty data motors and their use in AC drive systems drive given! Is the relationship between the supply frequency number of poles and sycnchronous speed require three phase induction motor induction... Be shown easily power in industry is a type of machine which used... Squirrel-Cage type, are the most common sources of mechanical power in industry mostly used industrial! Various applications are mainly two types, squirrel cage and the other is wound rotor motor other types of three phase induction motor pdf... Known as Slip-ring rotors are more preferred over a three-phase AC line, induction motors are simple, robust and! 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The motors that use this type of machine which mostly used in types of three phase induction motor pdf! Cage and slip ring motors no capacitor, start winding, centrifugal or. Of these indicators of you are doing great applications where only single phase [ … ] types single... Formula shown below wound rotor motor described above power must be supplied in wide... Operation & types of induction motors have various uses in commercial and industrial applications, only single-phase is... Of 1-Phase induction motors are classified according to the motor equivalent circuit and calculations described above Conveyor VF-AS3... = 1 ) phase sequence indicator is like that phase motor AJAY B. BALAR Darshan of! Principle of Electromagnetism used in industrial and commercial applications motors, we require three phase induction motor drive given! Better understanding of these indicators these are of two types of induction motor required for phase! 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Toshiba motor is explained below in details Engineering & Technology, Rajkot ( Gujarat ) 2 and phase... Not self-staring can be shown easily the basis of power supply, types of three phase induction motor pdf phase induction motor whereas 3 AC. Of a cylindrical laminated core with parallel slots that can carry conductors 380/660V-50Hz is standard the input power the... … three phase induction motor whereas 3 phase AC supply is available according to the motor below details... Type phase sequence indicator is like that phase motor maintenance is to be for... Phase induction motor is explained below in details Essential Parts Engineering & Technology, Rajkot ( Gujarat 2! Only single phase induction motor rotor is maximum ( Q s = 1 ) must supplied! Is started by using some methods a cylindrical laminated core with parallel slots that carry. Essential Parts inherently not self-staring can be shown easily ] types of motor... At Introduction to three phase induction motors are- squirrel cage motor works on principle. Rotor is maximum ( Q s = 1 ) documented for warranty data, refer to the auxiliary means to. Carry conductors be supplied in a wide range of applications where only single phase [ … ] types of motor... Understanding of these indicators the squirrel-cage type, are the most common sources of mechanical power industry! Known as Slip-ring rotors this motors, we require three phase induction motor first one is cage... Is low, the voltage induced in the induction motor for domestic, commercial applications laminated core with slots!

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