3 phase squirrel cage induction motor pdf free

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. Kanpur, india design of a three phase squirrel cage induction motor for electric propulsion system ravi prakash,mohammad junaidakhtar, r. The threephase ac induction motor is a rotating electric machine that is designed to operate on a threephase supply. Horizontal squirrel cage mediumvoltage induction motor. However, should the motor require service, this manual includes a section that assists the. Design of a three phase squirrel cage induction motor for. Optimizing the efficiency of three phase squirrel cage induction motors scims plays a. Design of a three phase squirrel cage induction motor for electric. The three phase induction motor is the most widely used electrical motor. Firstly, i am going to tell you about the structure of squirrel cage induction motor. In three phase induction motor, the power is transferred from stator to rotor.

Almost 95% of the induction motors used is of squirrel cage type. By observing a few essential rules, you will ensure problemfree operation for many years. Menzel 3 phase squirrel cage induction motors are robust, efficient and durable. The iec 60034301 is part of an effort to unify motor testing standards, efficiency requirements and product. A squirrelcage rotor is used in this type of induction motor.

Threephase induction motor squirrel cage rotor customer. It consists of a cylinder of steel with aluminum or copper conductors embedded in its surface. When a 3 phase supply is given to the stator winding it sets up a rotating magnetic field in space. One singlephase wattmeter plus miscellaneous apparatus as needed.

This paper is an attempt at the simplified presentation of the basic aspects of vector control, as applied to. The principle of operation of this motor is based on. A wide variety of three phase squirrel cage induction motor options are available to you, such as threephase, singlephase. The squirrel cage induction motor was designed for an extended service life under very demanding conditions. Troubleshooting the problems 1, 2 as mentioned above, open the motor to find out the breakage and weld it.

The most popular type is the 3phase, squirrelcage ac induction motor. Squirrel cage induction motor and wound rotor induction motor. A threephase, squirrelcage induction motor is fed by a voltagesource inverter. Like any electric motor, a 3phase induction motor has a stator and a rotor.

The stator carries a 3phase winding called stator winding while the rotor carries a shortcircuited winding called rotor winding only the stator winding is fed from the 3phase supply. 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. Designing of three phase squirrel cage induction motor for. Threephase ac induction motors are widely used in industrial and commercial applications. What is squirrel cage induction speed of the motor and viceversa. Motors employing this type of rotor are variously known as phase wound motors or wound motors or as slipring motors. These bars are shorted at each end with shorting rings. Menzel squirrel cage motors are available in all standard motor cooling and protection types for lowvoltage from 75 kw as well as medium. In a squirrel cage induction motor, the rotor has conductive bars embedded in slots in the laminations, running the length of the rotor. Since 1927, users around the world have been able to rely on highquality 3 phase squirrel cage induction motors made by menzel. We thank you for making this choice, and would ask you to read the contents of this manual. There is no electrical connection between these bars. 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.

The new iec 60034301 defines worldwide the following efficiency classes of singlespeed threephase, cage induction motors in the 0,12 kw power range. Energy efficient induction motors three phase squirrel cage. The stator winding is assumed to be yconnected with the access to the phase terminals. Stator is made up of number of stampings in which different slots are. Request pdf design of a three phase squirrel cage induction motor for electric propulsion system this paper presents the design of. Parida department of electrical engineering national institute of technology, silchar,assam, india email.

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% find. Squirrel cage induction motor the engineering projects. Menzel squirrel cage induction motors are manufactured for various industries and industrial applications of all kinds. Background the simplest and most widelyused rotor for induction motors is the socalled squirrel cage rotor, from which the squirrel cage induction motor gets its name. How are squirrel cage induction motors constructed. In three phase induction motor, the power is transferred from stator to. Therefore an approach, biassed by excessive dependence on the motor equivalent circuit, is not very helpful in presenting the concepts of vector control. These motors fill most generalpurpose, constantspeed drive requirements. The design of y2 series induction motor absorbed the advanced technology of electric motors around the world. A 3 phase induction motor has two types based on the rotor construction, named as. Slip ring induction motor is made up from wound rotor and squirrel cage induction motor is made up from the squirrel cage rotor. Pdf three phase squirrel cage induction motor, conctruction. Hp squirrel cage induction motor which you have to parameterize. Ac induction motors are also the most common motors used in main powered home appliances.

In this case, power flows from the mechanical system, to the rotor circuit, then across the air gap to the stator circuit and external electrical system. Advantages of 3 phase induction motor generally easy to build and cheaper than corresponding dc or synchronous motors induction motor is robust. In this paper, a multiflux level, threephase, squirrelcage induction motor is. In this thesis, the design of a threephase squirrel cage induction motor have been done according to nema and iec standards with using ansys maxwell 16. Motors employing this type of rotor are known as squirrel cage inductionmotors. Normally, we use the motors in industrial drives because they are rugged, reliable and economical. 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. Motors employing this type of rotor are known as squirrelcage inductionmotors. Know about the most popular and almost unbreakable construction of squirrel cage induction motor.

The reason for the name squirrel cage is because of the type of rotor used in these motors. A simple explanation of how a 3 phase induction motor works. This 3 phase motor is also called as an asynchronous motor. Y2 series 3phase induction motors are characterized with. Now let us discuss in detail, the most common form of induction motor, the squirrel cage induction motor. Motors employing this type of rotor are variously known asphasewound motors or wound motors or as slipring motors.

Also appreciate the rugged construction of squirrel cage rotor and know the spectacular reasons for the skewed arrangements of the rotor conductors. An887, ac induction motor fundamentals microchip technology. The threephase induction motor is the extensively used for various kinds of industrial drives. A 3 phase squirrel cage induction motor is a type of three phase induction motor which functions based on the principle of electromagnetism. Construction of three phase induction motor electrical4u. This motor should be mounted on the motor bench, wherein the motor. The stator is supplied by a balanced 3phase ac power. Enter your email below to receive free informative articles on electrical. A stator winding is placed in the stator of induction motor and the three phase supply is given to it. Most of the application of industrial as well as domestic are this type of induction motor. Squirrel cage wound rotor with slip rings the rotating magnetic field the basic idea of an electric motor is to generate two magnetic fields.

Former is cheaper and broadly used as it requires less maintenance than later one. Squirrel cage induction motor an overview sciencedirect topics. 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 ruggedness and simplicity of the squirrelcage induction motor usually makes it the first choice for a driver. This speed depends on the motor pole number and supply frequency.

The construction of stator of the induction motor is almost the same as other motors. It also has two 3phase diode bridges for producing the dc output. Squirrel cage rotor almost 90 per cent of induction motors are squirrel cage type. How does a singlephase induction motor capacitor induction motor or ac motor work. It also has two 3 phase diode bridges for producing the dc output. 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. Squirrelcage rotor almost 90 per cent of induction motors are squirrelcage type. We also discuss the construction of a three phase motor including its stator and rotor. But the rotor construction differs with respect to the type of motor. Third international conference on advances in control and optimization of dynamical systems march 15, 2014. Pdf novel multiflux level, threephase, squirrelcage induction. What is the difference between a squirrel cage motor and a. Y2 series three phase induction motor i asynchronous motor y2 series three phase asynchronous motor is a kind of totally enclosed fancooled tefc squirrelcage induction motor. You should also make a dc measurement of stator winding linetoline resistance.

Know about the different winding slots, lamination of the stator and its construction. Record all nameplate information for the induction motor. 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. Learn what a three phase induction motor is, how it is constructed, and its working principle. Squirrel cage induction motors menzel elektromotoren. They are classified either as squirrel cage or wound rotor. Like wound rotor induction motors, stator of the motor is provided with three phase power supply. An induction motors rotor can be either wound type or squirrelcage type. It is a maintenance free, less noisy and efficient motor. They are built to cope with the toughest conditions, and reliably ensure the durable availability of your industrial facilities.