The 3 phase set of currents, each of equal magnitude and with a phase. Introduction types of electrical machines types of 3 ph induction motor basic principle working principle compnents of induction motor application comparision between 1ph i. The difference in speed between rotor, the synchronous speed and the rotating magnetic field is called the slip. Induction motor basics, single phase and three phase. The design of y2 series induction motor absorbed the advanced technology of electric motors around the world. Designing of three phase squirrel cage induction motor for. The machine designer first assumes the efficiency and power factor at the rated condition. Deepa assistant professor, department of mechatronics engineering, bharath university, chennai,india. The 3phase set of currents, each of equal magnitude and with a phase. You should also make a dc measurement of stator winding linetoline resistance. Three phase induction motor showing stator, rotor, and schematic representation of yconnected stator winding. July, 2018 7 of 11 suggested procedure data from induction motor lab 1.
Various applications toshiba motor is used for various applications. Motor weight, thrust load, twisting moments, seismic forces and other external applied loads must be considered in foundation design. As the current passes through the coils on opposite sides of the stator, a twopole electromagnet is established, creating a twopole motor. Design of threephase induction motor electrical machine. Lipo, introduction to ac machine design, 2 ed university of wisconsinmadison, 2004. A single phase induction motor is inherently not selfstaring can be shown easily. Because these motors typically only have an onoff state of operation, a vfd is needed if multiple operation speeds are desired. The application meets the following performance specifications. Nov 27, 2019 an electrical motor is an electromechanical device which converts electrical energy into mechanical energy. Construction of squirrel cage induction motor explained. Some singlephase induction motors are also called squirrel cage motors because of the rotors similarity. Design of a three phase squirrel cage induction motor for electric. It gives the relationship between electrical rating and physical dimensions quantities output of a 3 phase im is. Design analysis of three phase induction motor using computer program article pdf available december 2012 with 2,556 reads how we measure reads.
The staring torque of induction motor is very high which makes motor useful for operations where load is applied before the starting of the motor. Advantages of 3 phase induction motor generally easy to build and cheaper than corresponding dc or synchronous motors induction motor is robust. These types of motors are known as selfstarting induction motors. For this example, refer to the motor equivalent circuit and calculations described above. The working of the three phase induction motor is based on the principle of electromagnetic induction. Abstractthis paper presents an optimal design method to optimize threephase induction motor in manufacturing process.
The main aim of the project dealt with the concept of speed control of a three phase induction motor with energy saving. Three phase induction motor model design in ansys rmxprt. Design of vfd drive for a 3 phase induction motor m. Air gap length is a major part of induction motor design. An induction motor can therefore be made without electrical connections to the rotor.
In three phase induction motor, the power is transferred from stator to. Note that the measured voltages are linetoneutral values, measured currents are phase currents use 40a scale, and measured power is for one phase only. An induction motor or asynchronous motor is an ac electric motor in which the electric current. A three phase induction motor essentially consists of two parts, namely the stator and. Pdf design and analysis of three phase induction motor. The motor uses a squirrel cage rotor, which has a laminated iron core with slots. April 11, 20 8 of 10 vmot ll imot rpm torque vd id 208 v 1.
An induction motors rotor can be either wound type or squirrelcage type. Starting, braking and positioning with threephase cage. The first ac commutatorfree threephase induction motors were. Jan 02, 2017 singlephase induction motor this singlephase motors are truly two phase machines. Three phase induction motor design in windows programming. In a 3 phase ac induction motor, there are three stator windings, each usually in two halves, with the rotor winding shortcircuited by end rings. Threephase induction motor design software ieee xplore. The single phase induction motor is more subtle and less efficient. Design and optimization of three phase induction motor using. The stator of an induction motor consists of 3 phase windings, which when connected to a 3 phase supply creates a rotating magnetic field. 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. This final thesis will mostly be dedicated to induction motors but also to synchronous permanent magnet and reluctance motors.
Flexible 5 ratings correspondence 220380415v50hz,220440v60hz is standard. An electrical motor is an electromechanical device which converts electrical energy into mechanical energy. These motor drives are designed to be used in conjunction with a 3 phase induction motor. Record all nameplate information for the induction motor. Construction of three phase induction motor electrical4u. Pdf design analysis of three phase induction motor using. Pdf design of a three phase induction motor based on. Department of electrical engineering dit, university, dehradun, uttarakhand references. Refer back to this diagram as the operational requirements of the singlephase motor are discussed. The objective of this paper is to enhance the 3 phase induction motor protection systems using 16f87 peripheral interface microcontrollers. When three phase stator winding of an induction motor is energized from a 3 phase supply, a rotating magnetic field is set up which rotates around the stator at synchronous speed ns. Applications of three phase induction motors of size varying from half a kilowatt to thousands of kilowatts are numerous. The single phase induction motor is much the same in construction as the three phase motor. Design of 3 phase induction motor free download as pdf file.
It is aimed to provide three windings in the same stator core. The three phase induction motor is the extensively used for various kinds of industrial drives. The rotor will constantly be turning to align its magnetic field with that of the stator field. The three phase induction motor is the most widely used electrical motor. Threephase induction motor showing stator, rotor, and schematic representation of yconnected stator winding. Determination of the losses in induction machines due to harmonics pdf. Design and analysis of three phase induction motor using computer program. Three phase induction 208v motor with matlab revised. Nov 27, 2019 the three phase induction motor is the most widely used electrical motor.
There are two basic reasons for the use of single phase motors rather than 3 phase motors. 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. The basic idea of an electric motor is to generate two magnetic fields. A linear induction motor lim is a specific type of alternating current ac motor designed to produce motion in a straight line. The art of design lies in suitable and economic distribution of space to iron, copper, insulation, stator diameter, rotor dimensions, windings and airgap in the machine. A 3 phase induction motor can be used for different applications with various speed and load requirements. Almost 80% of the mechanical power used by industries is provided. The singlephase induction motor is much the same in construction as the threephase motor. The design template interface for induction motor drive, for example, is. System design concept the system is designed to drive a 3phase ac induction motor. The main purpose of designing an induction motor is to obtain the complete physical dimensions of all the parts of the machine as mentioned below to satisfy the customer specifications.
Three phase induction motor is an important class of electric motor, which finds its application in various industrial and agricultural sectors. More than 80% of industrial motors are induction motors. 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. 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.
The stator separate from rotor by small air gap have ranges from 0. Chapter 3 induction motor and different speed control methods page no 3. Now let us discuss in detail, the most common form of induction motor, the squirrel cage induction motor. Basic construction of 3phase ac induction motors you should. Design of a three phase squirrel cage induction motor for. Threephase induction 208v motor with matlab revised. Volume 3, issue 1, july 20 353 abstract the paper presents a software development strategy for the design of three phase squirrel cage induction motors in windows programming platform. Design and simulation of three phase induction motor at. This paper presents the design of threephase induction motor im for high speed with torque speed curve suitable for vehicle propulsion applications.
The working of the threephase induction motor is based on the principle of electromagnetic induction. The three phase cage induction motor owes its good reputation as a rugged, problemfree drive unit not least to its good starting characteristics. Aluminum bars are molded on the slots and shortcircuited at both ends with a ring. There are two types of induction motors, one with wound type rotor, also called slipring motor and another one with squirrelcage rotor.
Design and development of three phase induction motor using. Y2 series 3 phase induction motors are characterized with. A lim operates under the same principles as its ac rotary motor counterpart, typically powered by a three phase voltage scheme with a. Pdf this paper presents the primary result of a research project whose aim is to improve efficiency of a three phase induction motor using amorphous.
The magnetic field in the air gap from the voltage applied to the stator. Starting of 3 phase induction motors, high starting torque motors, speed control, rheostatic method, pole changing method cascade control of speed, double cage induction motor, cogging and crawling of induction motor, induction generator. Pdf design of a three phase induction motor based on efficiency. Abstract the paper presents a program for optimized design or redesign of threephase induction motors conceived in. A 3 phase, y connected, 460 volt line to line, 25 horsepower, 60 hz, 8 pole induction motor has the following constants, in ohms per phase referred to the stator. Design strategy for a 3phase variable frequency drive vfd. These motor drives are designed to be used in conjunction with a 3phase induction motor.
Three phase induction motor model design and performance analysis in ansys rmxprt. How an induction motor works by equations and physics. System design concept the system is designed to drive a 3 phase ac induction motor. Design and simulation of three phase induction motor at different load conditions in matlabsimulink. Design methodology the design process of induction motor is an iterative process. Design design of three phase induction motor is very tedious task.
Select number of stator slots and suitable three phase winding layout experience. 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. Sep 30, 2016 in this series of videos we are going to see how the construction of the induction motor in ansys rmxprt and 2d 3d design part 1 of 3. The software technologies used are visual basic 6 for form design and coding. Design of a three phase induction motor based on efficiency improvement using amorphous iron material conference paper pdf available december 2008 with 4,211 reads how we measure reads. One single phase wattmeter plus miscellaneous apparatus as needed. A portion of rotating magnetic field in a three phase. Traditional design of cage rotor induction motors publish. The three phase induction motor is the easiest motor of this type to understand so these notes start with that type.
In this series of videos we are going to see how the construction of the induction motor in ansys rmxprt and 2d 3d design part 2 of 3. Some single phase induction motors are also called squirrel cage motors because of the rotors similarity to a circular animal exercise wheel. Oct 04, 2016 in this series of videos we are going to see how the construction of the induction motor in ansys rmxprt and 2d 3d design part 2 of 3. Three phase induction motors are extensively used for industrial applications consequently making its smooth operation and long life very imperative. Three phase induction motors are employed in almost all the industries because of its simple construction and easy operation. Frame size 180m and above, 380660v50hz is standard.
The machine designer first assumes the efficiency and power factor at. The flow chart for design of three phase induction motor 1 which is shown in. This induces an electric field in a coil or squirrel cage to drive a rotor. Although single phase induction motor is more simple in construction and is cheaper than a 3 phase induction motor of the same frame size, it is less efficient and it operates at lower power factor. For design purpose, a 3kw, 415 v three phase induction motor is restructured to 2. His document describes the design road taken when looking at a 3phase variable frequency drive vfd. 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. Starting method for induction motors a 3 phase induction motor is theoretically self starting. Ac induction motors are also the most common motors used in main powered home appliances. As discussed in chapter 16, the squirrel cage comprises the bars and. A motor drive system consists of a dc bus, 3 phase voltage source inverter, motor, motor controller, and mechanical load. 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.
However, single phase induction motors does not have self starting torque and are made to. Basically the design of electric motor involves the study of the voltages. Theory and analysis of three phase induction motor using. Typical power factor and efficiency of three phase 60 hz nema b induction machines ref. Standard wire used for winding 3 17 swg limitations. The most common type of ac motor being used throughout the work today is the induction motor. The reason for the name squirrel cage is because of the type of rotor used in these motors. By far the most commonly used ac motor is the induction motor.