One single phase wattmeter plus miscellaneous apparatus as needed. The design of y2 series induction motor absorbed the advanced technology of electric motors around the world. Parida department of electrical engineering national institute of technology, silchar,assam, india email. Advantages of 3 phase induction motor generally easy to build and cheaper than corresponding dc or synchronous motors induction motor is robust. L direct on line starte it is simple and cheap starter for a 3 phase induction motor. Cage induction machines institut fur elektrische energiewandlung. Create scripts with code, output, and formatted text in a single executable document. Squirrel cage induction motor and wound rotor induction motor. The magnet is spun by a 3 phase ac motor with no rotor voltage 4. Three phase squirrel cage induction motor supply o tender. Troubleshooting the problems 1, 2 as mentioned above, open the motor to find out the breakage and weld it. Uses soft magnet rotor that is magnetized by the application of current in the stator coils 3. Energy efficient induction motors three phase squirrel cage. Closedform analysis of squirrelcage induction motors with.
An induction motors rotor can be either wound type or squirrel cage type. Construction of squirrel cage induction motor explained. Pdf squirrel cage induction motor design and the effect of. Parida department of electrical engineering national institute of technology, silchar.
In this work a conventional three phase squirrel cage type induction motor with specifications 10 hp, 415v, stardelta connected and 4 poles is chosen for comparison with our motor, which is. If the speeds become equal, there would be no such relative speed, so no emf induced in the rotor, and no current would be flowing, and therefore no torque would be generated. The rotor is same as that employed in 3 phase squirrel cage induction motor. Normally, we use the motors in industrial drives because they are rugged, reliable and economical. Thus from the working principle of three phase induction motor, it may be observed that the rotor speed should not reach the synchronous speed produced by the stator. A simple explanation of how a 3 phase induction motor works. The analysis of the 3phase squirrelcage induction motor with. Former is cheaper and broadly used as it requires less maintenance than later one. Record all nameplate information for the induction motor. Three phase induction motors w60 line squirrel cage rotor. Starting of squirrel cage induction motors485 an induction motor can be regarded as a transformer with a small air gap in the magnetic circuit. The two typed of rotor constructions which are used for induction motors are squirrel cage rotor and slip ring wound rotor. Pdf three phase squirrel cage induction motor, conctruction.
Depending upon the type of rotor construction used the three phase induction motor are. A squirrel cage rotor is the rotating part of the common squirrel cage induction motor. It directly connects the contacts of the motor to the full supply voltage. Motors what we will be working on today is the disassembly and assembly of an a. Prior to power electronics and advanced ac motor control being available dc motors were favourable solely from a technical and control point of view. This induces an electric field in a coil or squirrel cage to drive a rotor. To measure the inrush current when the motor starts. The three phase induction motors are simple in construction, rugged, low cost and easy to maintain. We also discuss the construction of a three phase motor including its stator and. Why are threephase squirrelcage induction motors commonly. It is desired to install a 3 phase cage induction motor restricting the maximum line current drawn from a 400 v 3 phase supply to 120 a. Unless otherwise the name plate specifies, all the squirrel cage, 3 phase, induction motors lower than v and smaller than 315 frame size can safely run continuously at the speed in the table below. Single phase induction motors are used extensively for smaller loads, such as household appliances like fans. Third international conference on advances in control and optimization of dynamical systems march 15, 2014.
At us american market 2pole and 4pole squirrelcage induction motors with. An induction motor s rotor can be either wound type or squirrel cage type. The slip ring motor has very little application in industries. Induction motors are generally two types as we see in the previous article. Oct 09, 2016 a 3 phase induction motor has two types based on the rotor construction, named as.
Three phase squirrel cage induction motors are widely used as industrial drives because they are selfstarting, reliable and economical. Set up and connections three phase induction motor noload and fullload operation three phase induction motor operation characteristics three phase induction motor direction of rotation p rocedure high voltages. Low and high voltage three phase induction motors m line squirrel cage rotor horizontal date. An induction motor is an electrical motor whic does not require external excitation of the rotor. You should also make a dc measurement of stator winding linetoline resistance. Squirrel cage wound rotor with slip rings the rotating magnetic field the basic idea of an electric motor is to generate two magnetic fields. Three phase induction motor specifications is 325 60034 1. The general construction of the slots in the rotor is such that the rotor bars.
The three phase squirrel cage induction motors are classified into 6 different standard types based on their electrical characteristics. Three phase squirrel cage induction motors in flameproof enclosure type asa frame size 63 315 ct1 2006 page 4 32 revision 3 the motors are suitable for three phase mains power supply with 400 v rated line voltage and for 50 hz rated frequency the overtemperature of the windings for the rated duty, at the rated parameters is in. Threephase induction motor squirrel cage rotor customer. A squirrel cage induction motor therefore draws a very high starting. The three phase induction motor is the extensively used for various kinds of industrial drives. Ml three phase squirrel cage induction motor supply of three phase squirrel cage induction motor for uranium corporation of indi, due date. Three phase induction motors an electric motor is a device which converts electrical energy into.
Transdesign of a three phase squirrel cage induction motor. In this paper new equations are derived for the 3phase squirrelcage induction motor with space harmonics which can be used to compute dynamic characteris. Conference paper pdf available august 2009 with 8,072 reads. In a wound rotor motor, the poles are actual windings, in a squirrel cage rotor there arent windings as such, but conductive bars, usually copper with a shorting ring on each e. Y2 series three phase induction motor i asynchronous motor y2 series three phase asynchronous motor is a kind of totally enclosed fancooled tefc squirrel cage induction motor. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them. For squirrel cage rotor it consists of copper bars.
Lowvoltage three phase squirrel cage induction motors for general purpose order this document comes with our free notification service, good for the life of the document. More files in the power electronics control community. The sinusoidal stator phase currents fed in the stator coils create a magnetic field. Some singlephase induction motors are also called squirrel cage motors because of the rotors similarity to a circular animal exercise wheel.
You will be using the labvolt trainer model no 8020. Weg threephaseinductionmotors tline squirrel cage rotor12364818manualenglish. Windings are such placed that they are electrically and mechanically 120 o apart from in space. Designing of three phase squirrel cage induction motor for. Squirrel cage induction motor the engineering projects. Observation of no load test i o amp v o volts pin watts stator cu loss. Construction of three phase induction motor electrical4u. A 3 phase squirrel cage induction motor is a type of three phase induction motor which functions based on the principle of electromagnetism. Since 1927, users around the world have been able to rely on highquality 3 phase squirrel cage induction motors made by menzel. This is a product developed with levels of quality and efficiency that ensure an excellent performance.
Introduction types of electrical machines types of 3 ph induction motor basic principle working principle compnents of induction motor application comparision between 1ph i. These windings are either star connected or in delta connected. Load tests on a three phase induction motor and measurement of the inrush current objectives. To know the relationships between the different parameters related to the operation of three phase squirrel cage induction motors, such as the motor speed, torque, mechanical power, active power, reactive power, power factor, and efficiency. This paper describes a generalized simulation model of the threephase induction motor using the simulink software package of matlab. A 3 phase induction motor has two types based on the rotor construction, named as. In operation, the nonrotating stator winding is connected to an alternating current power source. The stator has windings that produce a magnetic field, and windings on the rotor cut this field and induce a current in the rotor windings. Conference paper pdf available august 2009 with 8,082 reads.
Mathematical modeling and speed torque analysis of three phase squirrel cage induction motor using matlab simulink for electrical machines laboratory now all the measured values in no load test of 3o squirrel cage induction motor is tabulated in table 3. Design of a three phase squirrel cage induction motor for electric propulsion. The induction motor due to its characteristics forms the most common choice of industrial applications worldwide. Types of three phase induction motor squirrel cage induction motor. Pdf optimization of the electromagnetic characteristics. It is very commonly used in industries because it is very cheap, robust, efficient, and reliable. Squirrel cage motor almost 90% of induction motors are squirrel cage motors. Various applications toshiba motor is used for various applications. Induction motor types based on the construction of the rotor, induction motors are broadly classified in two categories. In this work a conventional three phase squirrel cage type induction motor with specifications 10 hp, 415v, stardelta connected and 4 poles is chosen for comparison with our motor, which is designed for good efficiency. In this type of three phase induction motor the rotor is wound for the same number of. Three phase squirrel cage induction motors are widely used in industrial drives because they are rugged, reliable and economical.
An induction motor can be squirrel cage motor or a wound rotor motor. They are built to cope with the toughest conditions, and reliably ensure the durable availability of your industrial facilities. A wound rotor or slip ring motor has a 3phase winding, similar to the stator. The starting current is very large, normally 6 to 8 times the rated current. Squirrel cage induction motor is used in lathes, drilling machine, fan, blower printing machines etc. The threephase induction motor is the extensively used for various kinds of industrial drives.
Kanpur, india design of a three phase squirrel cage induction motor for electric propulsion system ravi prakash,mohammad junaidakhtar, r. This method is normally limited to smaller cage induction motors, because starting current can be as high as eight times the full load current of the motor. The stator construction is the same in both motors. Menzel 3 phase squirrel cage induction motors are robust, efficient and durable. A wide variety of three phase squirrel cage induction motor options are available to you. Three phase induction motor squirrel cage rotor customer.
In this example the entire motor winding is represented. Nov 27, 2019 thus from the working principle of three phase induction motor, it may be observed that the rotor speed should not reach the synchronous speed produced by the stator. Design of a threephase squirrelcage induction motor based on efficiency maximization using fem software mucet2008paper no here. Firstly, i am going to tell you about the structure of squirrel cage induction motor. The new iec 60034301 defines worldwide the following efficiency classes of singlespeed three phase, cage induction motors in the 0,12 kw power range. An843, speed control of 3phase induction motor using pic18 mcus. Pdf modelling of the threephase induction motor using. Frame size 180m and above, 380660v50hz is standard. Starting method for induction motors a 3 phase induction motor is theoretically self starting.
This paper presents the design of threephase induction motor im for high speed with torque speed curve. There is uniform air gap between stator and rotor but no electrical connection between them. A complete lumped equivalent circuit of threephase squirrelcage. 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.
Three phase induction motor specifications is 325 60034. Yahya shakweh, in power electronics handbook fourth edition, 2018. In particular, the squirrel cage induction motors are widely used electric motor in home and industrial. The induction motor is started by itself that we know. To obtain the load performance characteristics of a three phase squirrel cage induction motor. Design of a three phase squirrel cage induction motor for electric. Flexible 5 ratings correspondence 220380415v50hz,220440v60hz is standard. The singlephase induction motor is much the same in construction as the threephase motor. The difference in speed between rotor, the synchronous speed and the rotating. A 1 phase induction motor is similar to a 3 phase squirrel cage induction motor in physical appearance. Low and high voltage three phase induction motors m line. An induction motor can be, squirrel cage induction motor. Safe running speed for the squirrel cage induction motors.
Siemens squirrel cage induction standard threephase motors pdf. In this work, with the use of fem analysis, a specific induction motor is optimized under three different criteria. The parameters of the motor are listed in table 10. At the final stage of the design of a threephase induction motor and. As discussed in chapter 16, the squirrel cage comprises the bars and. The model is based on twoaxis theory of revolving frame. Advantages of three phase squirrel cage induction motor. Working principle of 3 phase squirrel cage induction motor. Low voltage threephase squirrelcage induction motor. Pdf partwinding starting improvement of threephase squirrel. Disassembly and assembly of motors three phase induction motor.
Horizontal three phase induction electric motors squirrel cage rotor dear customer, thank you for acquiring a weg motor. Pdf design of a threephase squirrelcage induction motor. When a 3 phase supply is given to the stator winding it sets up a rotating magnetic field in space. Since then, we have continued to comply many high ef. Y2 series 3 phase induction motors are characterized with. When the 3 phase supply is provided to the stator, a magnetic field is produced which rotates the rotor and motor starts. It consists of a cylinder of steel laminations, with aluminum or copper conductors embedded in its surface. Explain starting methods of 3 phase induction motor.
This rotating magnetic field has a speed which is known as the synchronous speed this rotating magnetic field induces the voltage in rotor bars and hence shortcircuit currents start flowing in the rotor bars. Slip ring rotor or wound rotor or phase wound rotor. Two digital multimeters and fluke power quality meter with banana cables from the. Feb 09, 2018 mainly because they are cheap, robust, selfstarting. The single phase induction motor resembles, three phase, squirrel cage motor except that, single phase induction motor has no starting torque and some special arrangement have to be made to make it as self starting. Ac induction motors are also the most common motors used in main powered home appliances. Partwinding starting improvement of threephase squirrelcage induction motor. In this chapter, we shall focus our attention on the construction. What is squirrel cage induction speed of the motor and viceversa. Operation manual threephase squirrel cage induction. A squirrelcage rotor is the rotating part of the common squirrel cage induction motor.
Induction motor totallyenclosed fancooled nema standard epact three phase induction motors sdesign versatility teco totally enclosed fan cooled squirrel cage induction motors are designed, manufactured and tested to meet or exceed the latest nema, ieee, csa and. To know what motor efficiency and highefficiency motors are. Kirloskar brothers limited an overview of manufacturing. In squirrel cage induction motor, there is a 3 phase winding on the stator slots. Pdf modelling of the threephase induction motor using simulink. This paper describes a generalized simulation model of the three phase induction motor using the simulink software package of matlab.
An induction motor can therefore be made without electrical connections to the rotor. In this case, it is better to choose a induction motor with a great capacity or reduce the load. A 3 phase ac induction motor photoed by hordu motor. A 3 phase induction motor uses current delivered in three phases in a sequence into the coils of a stator to create a rotating magnetic field.