Induction motor seminar ppt, pdf report study mafia. Manual for induction motors and generators both for safe and hazardous area, in french language. Free download induction motor seminar ppt, pdf report. Sep 27, 2016 induction motor is an ac electric motor, having a stator and a rotor just like other motors, but the working principle is a little different which would be discussed further. Motor guide february 2014 low voltage motors motor guide. The stator works as the primary while the rotor works as the secondary. Teco totally enclosed fan cooled squirrelcage induction motors are designed, manufactured and tested to meet or exceed the latest nema, ieee, csa and other international standards. Record all nameplate information for the induction motor. 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.
Simple and rugged design, lowcost, low maintenance and direct connection to an ac power source are the main advantages of ac induction motors. The theory used in the work was collected by studying literature on how electrical motors work, and by simplifying the explanations to suit the intended reader. It has been more than a century since the principle of the operation of induction motors was discovered. Different types of starters like autotransformer starter, stardelta starter. However, it suffers from the disadvantage of a low starting torque. The theory used in the work was collected by studying literature on how electrical. Starting of 3 phase induction motors, high starting torque motors. Output power ranges from 1 to 40 hp with frequency of 252000 hz. The motor is mounted in a test rig that allows one to control the torque applied to the motor shaft and to measure both rpm and torque. For reason of economy, most houses, offices and also rural areas are supplied with single phase a.
The minimization of electrical energy consumption through a better design becomes a major concern. This book is organized into four sections, covering the applications and structural properties of induction motors, fault detection and diagnostics, control strategies, and the more recently developed topology based on the multiphase induction motors. This reduces the mechanical stress on the motor and shaft, as well as the electrodynamic stresses on the attached power cables and electrical distribution network, extending the. As the name suggests, this type of motor has only one stator winding main winding and operates with a singlephase power supply. Aluminum bars are molded on the slots and shortcircuited at both ends with a ring. What is common to all the members of this family is that the basic physical process involved in. Induction motor is an ac electric motor, having a stator and a rotor just like other motors, but the working principle is a little different which would be discussed further.
Induction motors greater strength, longer life for various application s pg offers broad ranges of ac induction motor products with greater strength, longer life for various application. Includes rib cooled motors, types hxr and nxr, and modular induction motors, frame sizes 400630. In a split phase motor, the running winding should have a high resistance and low inductance. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. Types, construction and principle of operation, 3 phase induction motor, general phasor diagram, equivalent circuit, power and torque relations, condition for maximum torque. The rotating stator magnetic field induces currents in the short circuited rotor. Ppt induction motor powerpoint presentation free to download id. In an induction motor, the electric current in the rotor needed to.
We offer motors that are inverter driven, fan cooled, explosion proof, and can include gear heads and braking systems. Various methods of speed control 3phase induction motor. Generally, it is known as the asynchronous motor because its running speed is less than its synchronous speed. There are two basic reasons for the use of singlephase motors rather than 3phase motors. Although induction motors drives have already overtaken dc drives during the next decade it is still too early to determine if dc drives will eventually be relegated to the history book. List and describe the more commonly used equipment in an electric substation. Designing of three phase squirrel cage induction motor for. Us87496a us12690416a us87496a us 87496 a us87496 a us 87496a us 12690416 a us12690416 a us 12690416a us 87496 a us87496 a us 87496a authority us united states. There are two types of induction motors, one is named as single phase induction motor, while the second one is named as 3 phase induction motor. Download induction motor data induction motor data calculates the inductances and resistances. The adobe flash plugin is needed to view this content. An887, ac induction motor fundamentals microchip technology.
A threephase ac induction motor is the only type where the rotating magnetic field is created naturally in the stator because of the nature of the supply. One singlephase wattmeter plus miscellaneous apparatus as needed. Electric motors objectives after studying this unit, the student will be able to state the purpose of an electric motor. Nov 03, 2019 an induction motor also known as an asynchronous motor is a commonly used ac electric motor. Induction motors ppt transformer electrical engineering. Mostafa elshahed objectives learn a brief history of the electrical power systems construction. Our ac induction motors meet all requirements of specific application in several different sizes and torque ranges. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. Ac induction motors are the most common motors used in industrial motion control systems, as well as in main powered home appliances.
Most of single phase induction motors use squirrel cage rotor as it has a remarkably simple and robust. You should also make a dc measurement of stator winding linetoline resistance. An induction motor can be defined as the ac electric motor device in which a power source fed by the alternating current with the help of a primary. Scribd is the worlds largest social reading and publishing site. The rotor of an induction motor can be a squirrel cage rotor or wound. The first industrial motors of this type were constructed at the end of the nineteenth century and soon gained the favor of users who appreciated their raggedness, simplicity and relatively low manufacturing cost compared to dc commutator motors. The motor uses a squirrel cage rotor, which has a laminated iron core with slots.
Most of single phase induction motors use squirrel cage rotor as it has a remarkably simple and robust construction enabling it to operate in the most adverse circumstances. Various types of ac induction motors are available in the market. Dimensions of threephase footmounted induction motors. In traditional designs of 60 hz linefed induction machines, skin effect is represented by correction coefficients k r and k x for bar resistance and slot leakage inductance.
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. Synchronous and asynchronous ac inductionasynchronous motor an induction or asynchronous motor is an ac electric motor in which the electric current in the rotor needed to. The first industrial motors of this type were constructed at the end of the nineteenth century and soon. Introduction to induction motor the engineering projects. Induction motors installation operation generators. A 480v, 60 hz, 6pole, threephase, deltaconnected induction motor has the. The advantages of threephase ac induction motor are listed below. An electrical motor is a device that has brought about one of the biggest advancements in the fields of engineering and technology ever since the invention. Induction motors applications, control and fault diagnostics. A softstart controller is used in threephase ac induction motors to reduce the load on the selfstarting motor and the current surge of the motor during startup. The three phase induction motors are simple in construction, rugged, low cost and easy to maintain. An induction motor also known as an asynchronous motor is a commonly used ac electric motor.
While control of the induction machine is considerably more complicated than its dc motor counterpart, with continual advancement of microelectronics, these control complexities have essentially been overcome. Ppt induction motor powerpoint presentation free to. Synchronous and asynchronous ac inductionasynchronous motor an induction or asynchronous motor is an ac electric motor in which the electric current in the rotor needed to produce torque is induced by electromagnetic induction from the magnetic field of the stator winding. Induction motors ppt free download as powerpoint presentation. Single phase induction motors multiple choice questions.
You should also make a dc measurement of stator winding linetoline resistance using a dmm. Equipped with the latest technology in power electronics, sme controllers can drive ac motors in a wide range of applications up to 80kw peak power. Stator with laminated iron core slots with winding bars ring to short. The aim of this work is to give a further contribution in the design of a three phase induction motor for good efficiency. Differentiate between the various types of generating electric power stations. If additional information is required, contact siemens industry. In an induction motor, the electric current in the rotor needed to produce torque is obtained via electromagnetic induction from the rotating magnetic field of the stator winding. Differentiate between the various types of generating electric. A 3 phase induction motor can be used for different applications with various speed and load requirements. Common applications are actuators, pumps, power drive units, gun feeders, seat actuators and environmental cooling. Ac motor controllers for induction motors sme group. The induction machine behaves like a transformer, transferring electrical energy from the stator to. The electric energy generated purchased by consumers for different needs. Induction motor theory jerry bednarczyk, pe course content introduction the ac induction motor is well suited to applications requiring constant speed operation.