3 phase squirrel cage induction motor pdf file download

The three phase induction motor is the most widely used electrical motor. An electrical motor is an electromechanical device which converts electrical energy into mechanical energy. Disassembly and assembly of motors three phase induction motor. An induction motor or asynchronous motor is an ac electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. Unless otherwise the name plate specifies, all the squirrelcage, 3 phase, induction motors lower than v and smaller than 315 frame size can safely run continuously at the speed in the table below. Induction motor types based on the construction of the rotor, induction motors are broadly classified in two categories. It consists of a cylinder of steel with aluminum or copper conductors embedded in its. A 1 phase induction motor is similar to a 3 phase squirrel cage induction motor in physical appearance. Three phase induction motor specifications is 325 60034 1. Modelling and analysis of squirrel cage induction motor with. An843, speed control of 3phase induction motor using. Kirloskar brothers limited an overview of manufacturing. You should also make a dc measurement of stator winding linetoline resistance.

Transient behavior of athreephase squirrel cage induction motor im starting directly from the power system may be causing a large drop on power. Three phase induction motor specifications is 325 60034. Normally, we use the motors in industrial drives because they are rugged, reliable and economical. At hordu 19 years induction motor manufacturer, we have a range of three phase induction motors that vary in design, technology and production capacity. Teco totally enclosed fan cooled squirrel cage induction motors are designed, manufactured and tested to meet or exceed the latest nema, ieee, csa and other international standards. Squirrel cage induction motor and wound rotor induction motor. Menzel squirrel cage induction motors are manufactured for various industries and industrial applications of all kinds. One single phase wattmeter plus miscellaneous apparatus as needed. Menzel 3 phase squirrel cage induction motors are robust, efficient and durable. A mobile work bench with a component storage area and a work surface for motor assembly are included in the system. The new iec 60034301 defines worldwide the following efficiency classes of singlespeed threephase, cage induction motors in the 0,12 kw power range. Like wound rotor induction motors, stator of the motor is provided with three phase power supply. L direct on line starte it is simple and cheap starter for a 3phase induction motor.

Threephase induction motor squirrel cage rotor customer. Since 1927, users around the world have been able to rely on highquality 3 phase squirrel cage induction motors made by menzel. As you can see, the 3 phase squirrel cage induction motor could achieve the electromechanical energy conversion simple and straight forward. This method is normally limited to smaller cage induction motors, because starting current can be as high as. Induction motor totallyenclosed fancooled nema standard epact three phase induction motors sdesign versatility teco totally enclosed fan cooled squirrelcage induction motors are designed, manufactured and tested to meet or exceed the latest nema, ieee, csa and. Pdf transient analysis of threephase induction machine. The implementation is done using a rectifier and an inverter, where the pwm triggering pulses were generated by using pic micro controller for switching the igbts of the inverter. Slip ring induction motor is made up from wound rotor and squirrel cage induction motor is made up from the squirrel cage rotor. Record all nameplate information for the induction motor. Unlike a 3 phase induction motor, a single phase induction motor is not self starting but requires some starting means. Nov 27, 2019 an electrical motor is an electromechanical device which converts electrical energy into mechanical energy. An induction motors rotor can be either wound type. Designing of three phase squirrel cage induction motor for.

The singlephase induction motor is much the same in construction as the threephase motor. 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 basic idea of an electric motor is to generate two magnetic fields. For squirrel cage rotor it consists of copper bars, slightly longer than. These types of motors are known as selfstarting induction motors. Speed control of three phase squirrel cage induction motor using vf method is implemented. An induction motor, 3 phase induction motor or asynchronous motor is an ac electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. The rotor will constantly be turning to align its magnetic field with that of the stator field.

Oct 09, 2016 a 3 phase induction motor has two types based on the rotor construction, named as. Squirrel cage induction motor an overview sciencedirect topics. A 1phase induction motor is similar to a 3phase squirrel cage induction motor in physical appearance. Squirrel cage induction motor the engineering projects. Cheap copare to slipring im maintainance is easy cost is less compare to slipring im can use at explosive area starting torque is low compare to slip ring im application.

Skg 100l 4a s threephase squirrelcage induction motor, k flangetype, g g series, 100 shaft height of 100 mm, l frame size marking. What is squirrel cage induction speed of the motor and viceversa. Oct 19, 20 three phase squirrel cage induction motor with inverter section model 0100hz. Squirrel cage rotor three phase induction motor electrical. Legally binding document step out from the old to the newjawaharlal nehru invent a new india using knowledge. Each component is identified, and a complete assembly drawing is supplies with each motor. All pages of notes are typed neatly and explained with suitable diagrams and equations basics of construction, 1.

Nov 27, 2019 the three phase induction motor is the most widely used electrical motor. As the bars are permanently shorted to each other through end ring, the entire rotor resistance is very very small. Abb library is a web tool for searching for documents related to abb products and services. Parida department of electrical engineering national institute of technology, silchar. One singlephase wattmeter plus miscellaneous apparatus as needed.

Menzel squirrel cage motors are available in all standard motor cooling and protection types for lowvoltage from 75 kw as well as medium and high voltage up to 25000 kw 25 mw. In an induction motor the ladder is closed upon itself to form a squirrel cage fig. But the rotor construction differs with respect to the type of motor. 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. 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. Disassembly and assembly of motors three phase induction.

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. The stator construction is the same in both motors. Ul certified 1250kw squirrel cage three phase induction asynchronous motors the motor with rated speed 1500rpm y56014 type rated power kw rated current a speed rmin efficiency % power factor cos. They are simple, rugged, and selfstarting, and maintain a reasonably constant speed from light load to full load, set by the frequency of the power supply and the number of poles of the. The threephase induction motor is the extensively used for various kinds of industrial drives. The rotor consists of uninsulated copper or aluminium bars called rotor conductors. An induction motor is an electrical motor whic does not require external excitation of the rotor. Energy efficient induction motors three phase squirrel cage. It is desired to install a 3phase cage induction motor restricting the maximum line current drawn from a 400 v 3phase supply to 120 a. Kanpur, india design of a three phase squirrel cage induction motor for electric propulsion system ravi prakash,mohammad junaidakhtar, r. The new iec 60034301 defines worldwide the following efficiency classes of singlespeed three phase, cage induc tion motors in the 0,12 kw power range. In an induction motor the ladder is closed upon itself to form a squirrelcage fig. For conventional motors the number of harmonics in the equations can be. A squirrel cage rotor is used in this type of induction motor.

Advantages of 3 phase induction motor generally easy to build and cheaper than corresponding dc or synchronous motors induction motor is robust. 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. Menzel squirrel cage motors are available in all standard motor cooling and protection types for lowvoltage from 75 kw as. An843, speed control of 3phase induction motor using pic18 mcus.

As discussed in chapter 16, the squirrel cage comprises the bars and. Speed control of three phase squirrel cage induction motor. Most of the application of industrial as well as domestic are this type of induction motor. Transient behavior of athree phase squirrel cage induction motor im starting directly from the power system may be causing a large drop on power system resulting in failing other connected loads. A motor rating of 10 horse power, 415 volts with 1440 rpm and 4pole is selected for design problem and an equivalent circuit model is developed to find out the various performance parameters like efficiency, starting torque, torque.

The 3phase set of currents, each of equal magnitude and with a phase. Working principle of 3 phase squirrel cage induction motor. 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. Ac induction motors are also the most common motors used in main powered home appliances.

Squirrel cage rotor three phase induction motor the rotor core is cylindrical and slotted on its periphery. The rotor is same as that employed in 3phase squirrel cage induction motor. Design of a three phase squirrel cage induction motor for. In operation, the nonrotating stator winding is connected to an alternating current power source. Unlike a 3phase induction motor, a singlephase induction motor is not self starting but requires some starting means. For squirrel cage rotor it consists of copper bars. The construction of stator of the induction motor is almost the same as other motors. Pdf three phase squirrel cage induction motor, conctruction.

Three phase squirrel cage induction motors for centrifugal pumps for agricultural applications number of amendments. When a 3 phase supply is given to the stator winding it sets up a rotating magnetic field in space. The rotor is same as that employed in 3 phase squirrel cage induction motor. Good performance, such as high safety, energy saving, compact design, low noise, little vibration, big breakaway torque, reliable operation, stable running and convenient. The winding arrangement of a symmetrical induction machine is shown in figure 2. The analysis of the 3phase squirrelcage induction motor with space harmonics. Firstly, i am going to tell you about the structure of squirrel cage induction motor. Lecture 6 three phase induction motors cairo university. Some singlephase induction motors are also called squirrel cage motors because of the rotors similarity to a circular animal exercise wheel. A threephase, squirrelcage induction motor is fed by a voltagesource inverter. Speed control in squirrelcage induction motor can be accomplished by. Third international conference on advances in control and optimization of dynamical systems march 15, 2014. They are built to cope with the toughest conditions, and reliably ensure the durable availability of your industrial facilities.

It consists of a cylinder of steel laminations, with aluminum or copper conductors embedded in its surface. Almost 80% of the mechanical power used by industries is provided by three phase induction motors because of its simple and rugged construction, low cost, good operating characteristics, the absence of commutator and good speed regulation. Squirrel cage motor almost 90% of induction motors are squirrel cage motors. Safe running speed for the squirrelcage induction motors.

The sinusoidal stator phase currents fed in the stator coils create a magnetic field. Three phase squirrel cage induction motor with inverter section model 0100hz. Pdf novel multiflux level, threephase, squirrelcage induction. A squirrelcage rotor is the rotating part of the common squirrelcage induction motor. Pdf in the european union, the average load factor of electric motors in both industrial and tertiary sectors is estimated to be less than 60%. There is uniform air gap between stator and rotor but no electrical connection between them. An induction motor can therefore be made without electrical connections to the rotor. Their initial cost is substantially less than that of commutator motors, and their efficiency is. The threephase induction motors have some advantages in the machine efficiency, power factor, and torque ripples compared to their singlephase counterparts. The squirrel cage rotor consists of a laminated iron core which is slotted lengthwise around its periphery. Laboratory procedures in the correlated courseware guide students through each assembly and disassembly of the three phase squirrel cage motor.

A 3 phase induction motor has two types based on the rotor construction, named as. Single phase induction motor double revolving field theory the threephase induction motor starting torque inversely depends on the slip this implies that a small positive slip 0. These motors are suitable for all general applications where an open machine is not applicable due to severe environments such as excessive dirt, dust andor moisture. Squirrel cage induction motors menzel elektromotoren. L direct on line starte it is simple and cheap starter for a 3 phase induction motor. Former is cheaper and broadly used as it requires less maintenance than later one. 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.