3 phase induction motor design pdf

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. The software technologies used are visual basic 6 for form design and coding. The singlephase induction motor is more subtle and less efficient. Abstract the paper presents a program for optimized design or redesign of threephase induction motors conceived in. By default, the block sets the simulation type parameter to continuous to use a continuous sample time during simulation. Output equation of induction motor main dimensions length of air gap rules. Select number of stator slots and suitable three phase winding layout experience. 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.

Although single phase induction motor is more simple in construction and is cheaper than a 3phase induction motor of the same frame size, it is less efficient and it operates at lower power factor. For this example, refer to the motor equivalent circuit and calculations described above. Design analysis of three phase induction motor using computer program article pdf available december 2012 with 2,556 reads how we measure reads. This paper presents the design of threephase induction motor im for high speed with torque speed curve suitable for vehicle propulsion applications.

Because these motors typically only have an onoff state of operation, a vfd is needed if multiple operation speeds are desired. Standard wire used for winding 3 17 swg limitations. Analysis and design of ac induction motors with squirrel cage rotors. 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. Pdf design of a three phase induction motor based on efficiency. System design concept the system is designed to drive a 3phase ac induction motor. Abstractthis paper presents an optimal design method to optimize threephase induction motor in manufacturing process. Some singlephase induction motors are also called squirrel cage motors because of. 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. The rotor will constantly be turning to align its magnetic field with that of the stator field. The difference in speed between rotor, the synchronous speed and the rotating magnetic field is. 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.

Design strategy for a 3phase variable frequency drive vfd. If you are searching for rewinding of one phase motor you can find it here. The threephase induction motor is the easiest motor of this type to understand so these notes start with that type. Typical power factor and efficiency of three phase 60 hz nema b induction machines ref. The 3 phase set of currents, each of equal magnitude and with a phase. Three phase induction motor model design and performance analysis in ansys rmxprt. In three phase induction motor, the power is transferred from stator to. Design and optimization of three phase induction motor using. An induction motors rotor can be either wound type or squirrelcage type.

The basic idea of an electric motor is to generate two magnetic fields. Record all nameplate information for the induction motor. This final thesis will mostly be dedicated to induction motors but also to synchronous permanent magnet and reluctance motors. The rotor is separated from the stator by a small airgap which ranges from 0. Air gap length is a major part of induction motor design. Theory and analysis of three phase induction motor using. Frame size 180m and above, 380660v50hz is standard. The machine designer first assumes the efficiency and power factor at. A 3 phase induction motor can be used for different applications with various speed and load requirements. Design methodology the design process of induction motor is an iterative process. When threephase 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. One single phase wattmeter plus miscellaneous apparatus as needed. His document describes the design road taken when looking at a 3phase variable frequency drive vfd. Flexible 5 ratings correspondence 220380415v50hz,220440v60hz is standard.

Basically the design of electric motor involves the study of the voltages. A 3phase induction motor uses current delivered in three phases in a sequence into the coils of a stator to create a rotating magnetic field. The singlephase induction motor is much the same in construction as the threephase motor. Design design of three phase induction motor is very tedious task. How an induction motor works by equations and physics. 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. Design and development of three phase induction motor using. 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. Refer back to this diagram as the operational requirements of the singlephase motor are discussed. Design of a three phase squirrel cage induction motor for electric. These motor drives are designed to be used in conjunction with a 3phase induction motor. One singlephase wattmeter plus miscellaneous apparatus as needed. For design purpose, a 3kw, 415 v threephase induction motor is restructured to 2. The 3phase set of currents, each of equal magnitude and with a phase.

The three phase induction motor is the most widely used electrical motor. Although the emphasis in this work has been placed on the threephase induction motor with a squirrel cage rotor, the same modelling approaches hold for the. A 3phase, 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. This induces an electric field in a coil or squirrel cage to drive a rotor. It gives the relationship between electrical rating and physical dimensions quantities output of a 3 phase im is. 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. Pdf design and analysis of three phase induction motor. Three phase induction motors are employed in almost all the industries because of its simple construction and easy operation. The induction motor block implements a threephase induction motor. April 11, 20 8 of 10 vmot ll imot rpm torque vd id 208 v 1. A portion of rotating magnetic field in a threephase. Design of a three phase squirrel cage induction motor for. Threephase induction motor showing stator, rotor, and schematic representation of yconnected stator winding. 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 working of the threephase induction motor is based on the principle of electromagnetic induction. An electrical motor is an electromechanical device which converts electrical energy into mechanical energy. 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. Various applications toshiba motor is used for various applications. An induction motor can therefore be made without electrical connections to the rotor. It is aimed to provide three windings in the same stator core. Chapter 3 induction motor and different speed control methods page no 3. Designing of three phase squirrel cage induction motor for. Pdf design analysis of three phase induction motor using. You should also make a dc measurement of stator winding linetoline resistance. Threephase induction motor design software ieee xplore. A single phase induction motor is inherently not selfstaring can be shown easily.