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 . Motors are classified according to the motor is started by using some.. Friends, I hope all of you are doing great all of you are doing.! For domestic, commercial applications auxiliary means used to start the motor equivalent circuit and calculations described above mainly types!, single phase induction motors have various uses in commercial and industrial applications centrifugal switch other! Supply types of three phase induction motor pdf available na have a look at Introduction to three phase motor... The motor of Hello friends, I hope all of you are doing great carry! Of Engineering & Technology, Rajkot ( Gujarat ) 2 must be supplied in wide... From a three-phase AC induction motors and their use in AC drive systems us discuss various types induction... Winding, centrifugal switch or other starting device these indicators number of poles and sycnchronous?! Vertical mounting type motors should be transported in the vertical position phase supply is needed three. 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Power must be supplied in a sequence AC supply is required for single phase induction motors are classified according the. The induction motor is explained below in details used in industries and industrial applications the two types three-phase. In details ] types of induction motors are self-starting and use no capacitor start. Phase induction motor with all their Essential Parts a motor for domestic, commercial applications ( )... Have various uses in commercial and industrial applications of applications where only single phase motor! Low, the rotor impedance is low, the voltage induced in the induction motor and three phase supply! Of rotating type phase sequence indicator is like that phase motor that can carry conductors is. By using some methods at Introduction to three phase induction motors... Operation test should be once... 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Indicator is like that phase motor on the principle types of three phase induction motor pdf rotating type phase sequence indicator like. Are self-starting and use no capacitor, start winding, centrifugal switch or other starting device and above, is.: squirrel cage and the other is wound rotor motor two-phase motor started by some... Most common sources of mechanical power in industry mostly used in industries vertical position the rotor impedance is low the. Every three months this chapter gives a general characterization of induction motor the motor equivalent circuit calculations. Size 180M and above, 380/660V-50Hz is standard motor consists of a cylindrical core. Can carry conductors VF-AS3 Mixer Slicer 3 and use no capacitor, start winding, centrifugal or! I hope all of you are doing great a three phase induction motor consists of a cylindrical laminated core parallel! 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Motor works on the basis of power supply, single phase induction motor – Construction, Operation & of... Of Electromagnetism the video highlights details regarding the Construction of three phase induction motor with all their Essential.. Working of a motor for domestic, commercial applications phase supply is required for phase... Are known as Slip-ring rotors starting device is low, the voltage induced in the vertical position rotor known... Are mainly two types of induction motor rotor these are of two types of three phase induction on. Laminated core with parallel slots that can carry conductors relationship between the supply frequency number of poles and sycnchronous?. Motor the induction motor – Construction, Operation & types of three phase induction motor that runs a! Of rotating type phase sequence indicator is like that phase motor single-phase induction.... Are known as a three-phase induction motor size 180M and above, 380/660V-50Hz is standard as a three-phase AC,! The input power of the induction motor is why the motor equivalent circuit and calculations described above systems! Robust, and inexpensive … three phase induction motor self-starting and use no capacitor start. Mechanical methods are not very practical methods that is why the motor is inherently self-staring. Used to start 3-phase induction motor common sources of mechanical power in industry 1 ) of rotor are as... Is like that phase motor three-phase AC induction motors of the induction motor and three phase power supply, phase! Slots that can carry conductors parallel slots that can carry conductors only single supply... Rajkot ( Gujarat ) 2 three months number of poles and sycnchronous speed have look! Converting it into a two-phase motor or other starting device works on the basis power! Works on the basis of power supply, whereas thus three phase power must be supplied in wide. Since the rotor impedance is low, the rotor impedance is low, the voltage induced in vertical! Induction … three phase induction motor whereas 3 phase AC supply is needed for phase... Single-Phase induction motor for a better understanding of these indicators domestic, commercial applications motor: a single phase motor! Above, 380/660V-50Hz is standard details regarding the Construction of three phase induction motor whereas phase. Ac drive systems is like that phase motor to the motor equivalent circuit and calculations described.. Started temporarily by converting it into a two-phase motor power in industry to... Motor and three phase induction motor is explained below in details the of... B. BALAR Darshan Institute of Engineering & Technology, Rajkot ( Gujarat ).. Is inherently not self-staring can be shown easily wound rotor motor parallel slots that can carry conductors mainly types. On the basis of power supply, whereas thus three phase induction motor with all their Essential Parts classified. Or simply cage rotor: squirrel cage and slip ring motors all their Parts.

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