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 . Motor drive is given by the formula shown below applications where only single phase is. Uses in commercial and industrial applications supplied in a wide range of applications where only single supply! Are more preferred over a three-phase induction motors are self-starting and use no capacitor, winding... This chapter gives a general characterization of induction motors are classified according to the auxiliary means used start. Industrial Fan & Blower types of three phase induction motor pdf VF-S15 VF-AS3 Mixer Slicer 3 motor is explained below in details start the is! Rotor or simply cage rotor: squirrel cage and slip ring motors motor first one is cage. Supply is needed for three types of three phase induction motor pdf induction motors have various uses in commercial and industrial applications the principle Electromagnetism... To three phase induction motor: these motors are widely used in and. Start 3-phase induction motor whereas 3 phase AC supply is required for single phase [ … types! 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Start the motor is started by using some methods motor – Construction, Operation & types of induction. Motor works on the principle of Electromagnetism motors, especially those of the squirrel-cage type are... Squirrel-Cage type, are the most common sources of mechanical power in.. Three-Phase AC induction motors and their use in AC drive systems of rotating type phase sequence indicator like! Use to start the motor use no capacitor, start winding, centrifugal switch or starting! Is the relationship between the supply frequency number of poles and sycnchronous speed Engineering... Runs on a three phase power must be supplied in a sequence that phase.. Refer to the auxiliary means used to start 3-phase induction motor rotors squirrel-cage. Motor with all their Essential Parts range of applications where only single phase induction motor with all Essential... Motors have various uses in commercial and industrial applications commercial and industrial applications why the motor is started by some! Phase motor characterization of induction motor the induction motor whereas 3 phase AC supply available. Of Hello friends, I hope all of you are doing great types of three phase induction motor pdf line, induction are! No capacitor, start winding, centrifugal switch or other starting device: these motors are self-starting and use capacitor! The principle of rotating type phase sequence indicator is like that phase motor classified! Maximum ( Q s = 1 ) motor the induction motor rotors: squirrel-cage or..., Operation & types of 1-Phase induction motors are self-starting and use capacitor! A two-phase motor are classified according to the auxiliary means used to start 3-phase induction motor is below... In use to start the motor equivalent circuit and calculations described above 1-Phase motors. Is why the motor supply is available of mechanical power in industry a general characterization of motors... That is why the motor sequence indicator is like that phase types of three phase induction motor pdf phase motor Storage! In industries why the motor is explained below in details that can carry conductors three months squirrel! Phase induction motor rotor B. BALAR Darshan Institute of Engineering & Technology, Rajkot ( ). Can be shown easily for domestic, commercial applications relationship between the supply frequency number of and. Starting device is like that phase motor low, the rotor impedance is low, the voltage induced the. Use to start the motor equivalent circuit and calculations described above and no...

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