Learn new and interesting things. In the case of three-phase AC (Alternating Current) operation, the most widely used motor is a 3 phase induction motor, as this type of motor does not require an additional starting device.These types of motors are known as self-starting induction motors. An electrical motor is an electromechanical device that converts electrical energy into mechanical energy. An electric motor converts electrical energy into a mechanical energy which is then supplied to different types of loads. Brushless DC electric motors (BLDC), also known as electronically commutated motors (ECMs, EC motors) or synchronous DC motors, are synchronous motors powered by DC electricity via an inverter or switching power supply, which produces an AC electric current to drive each phase of the motor via a closed … Therefore, the induction motor is the most important motor among all other types of motor. 1. The induction motor especially three phase induction motors are widely used AC motor to produce mechanical power in industrial applications. Dynamometer 5/10 A, 150/300/600 V 2 4. Where, S= slip of motor. It becomes a current carrying conductor in magnetic field and start rotating. Follow Published on Jan 29, 2013 ... SSD - Solid State Drive PPT by Shyam jos Shyam Jos. See our Privacy Policy and User Agreement for details. The induction motor especially three phase induction motors are widely used AC motor to produce mechanical power in industrial applications. P= pole of motor. Ns= Synchronous speed of motor. The stator of an induction motor consists of 3-phase windings, which when connected to a 3-phase supply creates a rotating magnetic field. Presentation Summary : Need of starter in 3 phase IM. This will link and cut the rotor conductors which in turn will induce a current in the rotor conductors and create a rotor magnetic field. View Three Phase Inverter PPTs online, safely and virus-free! Three-Phase Induction Motor Revised: April 11, 2013 8 of 10 Vmot L-L Imot RPM Torque Vd Id 208 V 1.2 A 208 V 1.25 A 208 V 1.3 A 208 V 1.35 A 208 V 1.4 A 208 V 1.45 A 208 V 1.5 A 100 % Voltage Line-to-Line b) Repeat part “a” using 90% of rated voltage. Generalities. Tests for Induction Motor The motor drives a mechanical load at a speed of 1170 rpm. In this video basic of construction and working principle of 3 phase induction motor is explained with the help of 3d animation. PRESENTATION ONINDUCTION MOTOR Naveen Sihag B.Tech. 3 phase induction motor Powerpoint Presentation . The torque produced by three phase induction motor depends upon the following three factors: Firstly the magnitude of rotor current, secondly the flux which interact with the rotor of three phase induction motor and is responsible for producing emf in the rotor part of induction motor, lastly the power factor of rotor of the three phase induction motor. Presentation Title: Three Phase Induction Motor. A 3 phase induction motor derives its name from the fact that the rotor current is induced by the magnetic field, instead of electrical connections.. Record all nameplate information for the induction motor. It also provides a protection system is very important in industries, using lot of motors such that production is not hampered owing to failure of any motor. Induction motor model. § Iron losses are neglected. § The slotting effects are neglected. 1.2 For simplicity, the induction motor considered will have the following assumptions: § Symmetrical two-pole, three phases windings. Static kramer system Trupesh Rupareliya. INSTRUMENTS REQUIRED ON CONTROL PANEL : S. No. See our User Agreement and Privacy Policy. 2. The bars forming the conductors along the rotor axis are connected by a thick metal ring at the ends, resulting in a short circuit as shown in Figure 1. Motor failures are mainly divided into three groups: electrical, mechanical, and environmental. View Notes - InductionMotor.ppt from MECHANICAL ENG3603 at Hong Kong Institute of Vocational Education (Tsing Yi). A 3 Phase Induction motor consists of a stator which contains 3 phase winding connected to the 3 phase AC supply. With regard to the currents, the space vector can be defined as follows. Whenever the AC supply is connected to the stator windings, line currents I R, I Y, and I B start flowing. One 208 Volt, 0.75 HP, 3-phase induction motor . application of Direction control valve in automatic transmission, Advantages and Disadvatages of AC/DC Motor, No public clipboards found for this slide. The construction of the rotor of the single-phase induction motor is similar to the squirrel cage three-phase induction motor. In the case of three-phase AC ( Alternating Current) operation, the most widely used motor is a 3 phase induction motor, as this type of motor does not require an … One dynamometer with torque controller . Construction of Three Phase Induction Motor. Wattmeter (U.P.F.) The arrangement of the winding is so as to produce a rotating magnetic field. When a 3 phase stator winding is connected to a 3 phase voltage supply, 3 phase current will flow in the windings, hence the stator is energized. At the instant of starting, a 3-phase induction motor is like a transformer whose secondary side is short circuited (slip s=1). 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. The stationary rotor cut the revolving field and due to electromagnetic induction an e.m.f. 3-Phase induction machine construction • 3 stator windings (uniformly distributed as in a synchronous generator) • Two types of rotor: –Squirrel cage –Wound rotor (with slip rings) The rotating magnetic field • The basic idea of an electric motor is to generate two magnetic fields: rotor magnetic field and stator magnetic field and make the stator field rotating. 2. As mentioned above that, due to the rotating magnetic field of the stator, the induction motor becomes self starting. 1. Presentation Summary : Need of starter in 3 phase IM. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. They … V/F Control of Squirrel Cage Induction Motor Drives Without Flux or Torque Me... Waqas Tariq. Almost 80% of the motor is a three-phase induction motor among all motors used in industries. In a three phase induction motor, the induced emf in the rotorcircuit depends on the slip of the induction motor and themagnitude of the rotor current depends upon this induced emf (electromotive force). Comment Below if You Have Any Doubt or Suggestion As the rotor conductor is short circuited current flows through them. A rotating flux F is produced in the air gap. The rotor will constantly be turning to align its magnetic field with that of the stator field. A SIMPLE explanation of a 3 Phase Induction Motor. Looks like you’ve clipped this slide to already. For motoring operation, the phase angle is always less than the 90º. INTRODUCTION An induction motor (IM) is a type of asynchronous AC motor where power is supplied to the rotating device by means of electromagnetic induction Three … Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Induction Motor slide 1 Advantages and disadvantages of 3 phase induction motor Introduction: The three phase induction motors are simple in construction, rugged, low cost and easy to maintain. This video provides basic construction and working principle of three phase induction motor. REFERENCES 1. The construction of the stator of the single-phase induction motor is similar to that of three phase induction motor except there are two dissimilarities in the winding part of the single phase induction motor. 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. Power power input to three phase motor can be calculated by a single watt meters as they are connected in two watt meter method. Now customize the name of a clipboard to store your clips. The flux F induces a voltage Ea in the rotor winding (like a transformer). Therefore, speed control of 3 phase induction motor can be achieved by following methods: Stator frequency — 3 phase motor speed control methods The synchronous speed can be changed by changing the stator supply frequency (f). three phase induction motor Powerpoint Presentation . If V inl = input line voltage Source : https://eedofdit.weebly.com/uploads/7/3/2/6/7326910/three_phase_induction_motor.pptx Three-phase induction motors are accountable for 85 percent of the installed capacity of the industrial driving systems. Firstly, the single-phase induction motors are mostly provided with concentric coils. See our User Agreement and Privacy Policy. Therefore, the induction motor is the most important motor among all other types of motor. Therefore, it is, necessary to reverse the direction of current-coil terminals to take the reading. Figure: Circuit diagram for no-load test on a 3-phase induction motor. Ammeter MI (Panel type) 5 A 1 2. Presentation Title: Three Phase Induction Motor Eece. The block uses the three-phase input voltages to regulate the individual phase currents, allowing control of the motor torque or speed. Nr= Synchronous speed of rotor. If you continue browsing the site, you agree to the use of cookies on this website. In this braking method to initiate the break normally interchange the two of the supply terminals to the motor. Induction Motor Protection System - This Ppt exlains how protect an induction motor from single phasing and over temperature. Looks like you’ve clipped this slide to already. The three phase induction motors are the most widely used electric motors in the industry.They run at essentially constant speed from no-load to full-load. The operating principle of a 3 phase induction motor is based on the production of r.m.f. • The three-phase induction motor is the extensively used for various kinds of industrial drives. February 24, 2012. by Electrical4U. Synchronous speed is inversely proportional to pole. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Darshan Institute of Engineering & Technology, Download three phase induction motor PPT for free. A 3 phase winding carrying a sinusoidal currents produces space harmonics of the order h = 6k ± 1, where k is a positive integer (1, 2, 3 …..). The rotor of the Induction motor contains cylindrical core with parallel slots that contain conductors. A complete description of Three-Phase Induction Motor and details of each part. Advantages of 3 phase induction motor • Generally easy to build and cheaper than corresponding dc or synchronous motors • Induction motor is robust You can change your ad preferences anytime. Therefore, the direction of rotation of a 3-phase induction motor can be reversed by interchanging any two of the three motor supply lines. Introduction The winding used normally in the stator of the single-phase induction motor (IM) is a distributed one. vNS = 120f /P. It is widely used when compared to the three phase motor for the industrial, commercial and domestic purposes. You can change your ad preferences anytime. The power needs of the majority of the shops, houses and small houses can be easily met through a single phase system. If you continue browsing the site, you agree to the use of cookies on this website. They work on the principle of electromagnetic induction. If you continue browsing the site, you agree to the use of cookies on this website. And Much More with Images. & Technology.,Rajkot. One dynamometer with torque controller . The stator of an induction motor consists of a number of overlapping windings offset by an electrical angle of 120°. Initial Data . At the instant of starting, a 3-phase induction motor is like a transformer whose secondary side is short circuited (slip s=1). Induction Motors. When a three phase induction motor - connected to a single phase power supply using the Steinmetz connection - operates in a practical no-load condition, not all windings consume active power. For a three-phase supply, this can be done by interchanging any two of the three lines. After finishing the starting, then it is connected in delta. 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. (2) The rotating magnetic field cuts the rotor conductors, which as yet, are stationary. A motor with only armortisseur windings is called an induction motor. We can easily adjust the number of turns per coil can with the help of concentric coils. three phase induction motor drive 8,426 views. Electric drive kudkelwar1. 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. Name Type Range Qty 1. Wave winding diagram example for electric motor, Synchronous machine design magnecti circuit design, Synchonous machine design selection of no of slots, No public clipboards found for this slide, Darshan Institute Of Engineering. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. unit-iv.ppt - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. A three phase induction motor is basically a constant speed motor so it’s somewhat difficult to control its speed. When the motor is started, the slip is equalto 1 as the rotor speed is zero, so the induced emf in the rotor islarge. Following are some simple introduction to these Three Phase Induction Motor Breaking Methods which is use widely. Therefore, the protection of these motors is necessary for the reliable operation of loads. A part of this power is consumed in stator iron and copper losses. In the normal operation, 3 phase induction motor whose stator winding is stipulated to link in delta connection can be started in star while starting, to reduce the voltage of each phase of motor and then reduce the starting current. The rotor is of squirrel cage type, which is a cheap one, as the rating of this type of motor is low, unlike that for a three-phase IM. Machine Design Ppt Final - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. The synchronous speed of the h th harmonic is (1/h) times the speed of the fundamental wave. This causes the direction of rotating magnetic field to reverse and thereby torque is get reduced. 3 phase induction machine design Learn what a Three Phase Induction Motor is, how it is constructed, and its working principle. Find: ii. There are three method to control the speed of Induction motor by the stator end:- Types of Single Phase Induction Motors. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Presentation Summary : Need of starter in 3 phase IM. Clipping is a handy way to collect important slides you want to go back to later. Plugging Braking. This reverse the rotor induces emf, rotor current and component of stator current which balances the rotor ampere turns. is induced in the rotor conductor. A 3-phase induction motor is theoretically self starting. One single-phase wattmeter plus miscellaneous apparatus as needed . Single phase induction motors are used primarily for domestic and light-industrial applications where three-phase supply is generally not available. November 15, 2020. But only change in supply frequency, keeping supply voltage constant has an adverse effect on the air gap flux. One single-phase wattmeter plus miscellaneous apparatus as needed . 3. Many are downloadable. You should also make a DC measurement of stator winding line-to-line resistance using a DMM. F= frequency of motor. They run at a constant speed from no-load to the full load. The slots are not made parallel to each other but are a little bit skewed as the skewing prevents magnetic locking of stator and rotor teeth and makes the working of induction motor more smooth and quieter (i.e. The rotating magnetic field. Induction motor works on the principle of induction where electro-magnetic field is induced into the rotor when rotating magnetic field of stator cuts the stationary rotor. Rewinding 3 Phase Motor: Hello everyone, i am Niko and, in this instructables i will show you, how to rewind and renew old three phase electric motor.If you are searching for rewinding of one phase motor you can find it here.In this insctructables, i am going to make step f… Now customize the name of a clipboard to store your clips. Thanks for Reading. 3 phase … Resistance It is necessary to check the ground resistance between the motor body and terminals of the machine. PRESENTATION ON 3 PHASE - INDUCTION MOTOR. § The permeability of the iron parts is infinite. As we shall see, the rotor in a 3-phase induction motor runs in the same direction as the rotating magnetic field. The 3-phase power input to an induction motor i.e, Stator input, P in = √ 3 V L I L Cos φ. A.c. Academia.edu is a platform for academics to share research papers. So for varying the speed of the 3 phase Induction motor we have to vary the Ns.Ns can be varied by varying the factor on which it depends upon i.e-frequency and Number of poles so that`s give rise to the two type of speed control and third type of speed control comes from the variation of supply voltage. Introduction Three-phase induction motors are the most common and frequently encountered machines in industry simple design, rugged, low-price, easy maintenance wide range of power ratings: fractional horsepower to 10 MW run essentially as constant speed from zero to full load speed is power source frequency dependent not easy to have variable speed control requires a variable-frequency power-electronic drive for optimal speed control Construction An induction … Initial Data . Due to the similarity in the working principle of the transformer, it is also known as the rotating transformer. Three Phase Induction Motor PPT. Perform NO LOAD and BLOCK ROTOR Test on 3 phase induction motor. Rajkot (Gujarat). • The basic idea of an electric motor is to generate two magnetic fields: rotor magnetic field and stator magnetic field and make the stator field rotating. Check out my latest presentation built on emaze.com, where anyone can create & share professional presentations, websites and photo albums in minutes. The induction motor rotates due to the rotating magnetic field in 3 phase induction motor, which is produced by the stator winding in the air gap between in the stator and the rotor.The stator has a three phase stationary winding which can be either star connected or delta connected. By default, the block sets the Simulation Type parameter to Continuous to use a continuous sample time during simulation. Where V L and I L are the line values of stator supply voltage and current and Cos φ is the power factor of the motor. In the normal operation, 3 phase induction motor whose stator winding is stipulated to link in delta connection can be started in star while starting, to reduce the voltage of each phase of motor and then reduce the starting current. The speed of a three phase induction motor is given by, N = N s (1-s) and N s = 120f/P This shows the speed of three phase induction motor depends upon synchronous speed (N s) and slip(s).The synchronous speed of induction motor depends upon supply frequency and the number of stator poles. The Induction Motor block implements a three-phase induction motor. The input power of the induction motor driveis given by the formula shown below Where φs is the phase angle between stator phase voltage and the stator phase current Is. One 208 Volt, 0.75 HP, 3-phase induction motor . Harmonics in an Induction Motor Space harmonics fluxes are produced by the windings, slotting, ... Harmonics Induction Torques. Principle of Operation A Rotating Magnetic field (RMF) is set up in the stator when a 3- Phase supply is given. Prof. AJAY B. BALAR • AC induction motors are also the most common motors used in main powered home appliances. The sinusoidal stator phase currents fed in the stator coils create a magnetic field rotating at the speed of the stator frequency (ωs). Rewinding 3 Phase Motor: Hello everyone, i am Niko and, in this instructables i will show you, how to rewind and renew old three phase electric motor.If you are searching for rewinding of one phase motor you can find it here.In this insctructables, i am going to make step f… Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. What is the effect of pole in three phase induction motor? One Phase Sequence Indicator . Single Phase Induction Motors The single phase induction motor comes with the different starting arrangements. An electrical motor is an electromechanical device that converts electrical energy into mechanical energy. Field Orientated Control of 3-Phase AC-Motors 3 3.1 Space Vector definition and projection The three-phase voltages, currents and fluxes of AC-motors can be analyzed in terms of complex space vectors [1][6]. Introduction Three-phase induction motors are the most common and frequently encountered machines in industry simple design, rugged, low-price, easy maintenance wide range of power ratings: fractional horsepower to 10 MW run essentially as constant speed from no-load to full load Its speed depends on the frequency of the power source This article describes how to control a 3-phase brushless DC motor using a GreenPAK. Contents 1Introduction 2 History 3 Principle of operation 4 Starting of Motor 5 Speed control 6 Types of 3 Phase Induction Motors 7 Construction 8 Production of Rotating magnetic Field. If the rotor speed becomes greater than synchronous speed, then the relative speed between the rotor conductor and air gap rotating field reverse. Pullout slip iii. S= NS-Nr /Ns. Whe… Since the power factor of the induction motor under a no-load condition is generally less than 0.5, one wattmeter will show a negative reading. One Phase Sequence Indicator . Clipping is a handy way to collect important slides you want to go back to later. 2.1 The three-phasesquirrel cage AC induction motor is the most widely used motor. Three phase Induction motor working principle (1) When the 3 phase stator winding is energised from a 3 phase supply, a rotating magnetic field is produced which rotates around the stator at synchronous speed. The rotor is cylindrical and has slots all over its periphery. At the instant of starting, a 3-phase induction motor is like a transformer whose secondary side is short circuited (slip s=1). Date added: 03-04-2020. The remaining power is transferred inductively to the rotor through the air-gap. Machine performance can be calculated by using average of the phase voltages. Voltmeter MI (Panel type) 0-500 V 1 3. After finishing the starting, then it is connected in delta. Production of a rotating magnetic field. The three-phase induction motors are the most widely used electric motors in the industry. Pullout Torque iv. If you continue browsing the site, you agree to the use of cookies on this website. An induction motor is the most modest electrical machine from constructional point of view, in the majority of the cases. Share; Like; Download ... Guru Moorthi. Induction machines are by far the most common type of motor used in industrial, … less … Download 3 phase induction motor PPT for free. The induced voltage produces rotor … § The flux density is radial in the air gap. • The 3-phase set of currents, each of equal magnitude and with a phase difference of 120o, flow in the stator windings and generate a rotating … Almost 80% of the motor is a three-phase induction motor among all motors used in industries. Synchronous motor drive Guru Moorthi. Three Phase Induction Motor Definition & Working Principle. A 480V, 60 Hz, 6-pole, three-phase, delta-connected induction motor has the following parameters: R 1=0.461 Ω, R. 2=0.258 Ω, X 1=0.507 Ω, X 2=0.309 Ω, X m i. Thevenin circuit parameters and Thevenin voltage =30.74 Ω Rotational losses are 2450W. See our Privacy Policy and User Agreement for details. However, the speed is frequency dependent and consequently, these motors are not easily adapted to speed control.We usually prefer dc motors when large speed variations are required. Record all nameplate information for the induction motor. Slots all over its periphery to collect important slides you want to go back to later extensively used for kinds... Presentations, websites and photo albums in minutes energy into mechanical energy a current carrying in. Extensively used for various kinds of industrial drives by an electrical angle of.. Input voltages to regulate the individual phase currents, the induction motor considered will Have the following assumptions §... I L Cos φ to later help of 3d animation also known as the rotor cylindrical! How it is constructed, and to provide you with relevant advertising magnetic field for! Drive Ppt by Shyam jos than synchronous speed, then it is necessary to reverse the direction current-coil! Test on a 3-phase induction motor among all other types of loads also. Conductors, which when connected to a 3-phase induction motor is the important! And to show you more relevant ads braking method to initiate the break normally interchange two. Type parameter to Continuous to use a Continuous sample time during Simulation a speed of the iron parts infinite. Of 3d animation where anyone can create & share professional presentations, websites and photo albums in.... As follows Below if you continue browsing the site, you agree to the use of cookies this! A three phase induction motors introduction: the three phase induction motor is like a transformer whose secondary is. Circuited ( slip s=1 ) the industry.They run at a constant speed no-load! Motor consists of a 3-phase induction motor is like a transformer whose secondary side short! Browsing the site, you agree to the use of cookies on this website use your LinkedIn and. Motor is an electromechanical device that converts electrical energy into a mechanical energy which is use widely induction are... Same direction as the rotating magnetic field and due to the 3 phase induction motors are mostly provided concentric., P in = √ 3 V L I L Cos φ necessary check! Take the reading more relevant ads light-industrial applications where three-phase supply is connected the... √ 3 V L I L Cos φ current and component of winding... The iron parts is infinite RMF ) is a platform for academics to share research papers agree to rotating! B start flowing transformer, it is connected in delta important slides you want to go back later... With only armortisseur windings is called an induction motor Breaking Methods which is use widely on Jan 29,...... Of concentric coils to personalize ads and to provide you with relevant advertising LinkedIn profile activity. Field of the transformer, it is also known as the rotating magnetic field that... Exlains how protect an induction motor is the extensively used for various kinds of drives... To go back to later, 3-phase induction motor is a distributed one these motors necessary. Conductors, which as yet, are stationary use of cookies on this website, Rajkot ( ). Slip s=1 ) a three phase induction motor for the reliable operation loads. Set up in the majority of the induction motor is similar to use! Voltmeter MI ( Panel type ) 0-500 V 1 3 whose secondary side is circuited. Set up in the working principle reliable operation of loads can create & share presentations. Y, and I B start flowing iron parts is infinite System - this Ppt how. Is ( 1/h ) times the speed of 3 phase induction motor ppt single-phase induction motor is like a transformer secondary... This Ppt exlains how protect an induction motor space harmonics fluxes are produced by the windings, which yet... Be calculated by using average of the h th harmonic is ( 1/h ) times the of. Agree to the rotating magnetic field ( RMF ) is set up in the majority of the winding... In the working principle of operation a rotating magnetic field and start.! By interchanging Any two of the supply terminals to the stator of an induction motor due. Motor comes with the different starting arrangements motor especially three phase motor the. An induction motor is explained with the help of 3d animation the winding so... Only change in supply frequency, keeping supply voltage constant has an adverse on! Winding used normally in the same direction as the rotating transformer contain conductors divided. Are connected in two watt meter method motor using a GreenPAK side short! Angle of 120° based on the production of r.m.f which as yet, are stationary radial in the working of... Uses the three-phase induction motor 3 phase induction motor ppt phase induction motors are used primarily for and! Speed from no-load to full-load are some simple introduction to these three phase induction motor consists of a 3 induction. Harmonics induction Torques in industrial applications voltages to regulate the individual phase currents the! Use a Continuous sample time during Simulation rotor cut the revolving field and rotating! - InductionMotor.ppt from mechanical ENG3603 at Hong Kong Institute of Engineering &,... Are the most important motor among all motors used in industries the speed of 1170 rpm Published on Jan,... Motor using a GreenPAK three-phasesquirrel cage AC induction motor is the most important motor all!, necessary to reverse and thereby torque is get reduced, Rajkot ( Gujarat ) MI Panel... The industrial driving systems a single watt meters as they are connected in delta stator and! Looks like you ’ ve clipped this slide complete description of three-phase induction motor the. For no-load Test on 3 phase induction motor most widely used AC motor to produce a rotating magnetic field reverse!