This is a presentation about linear induction motor. here I had explained LIM clearly like effects, construction, working, application and many more. most of people don't know much about this type of motor. I hope this will be usefull to you
An electric motor is an electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate force in the form of rotation of a shaft.
A reluctance motor is a type of electric motor that induces non-permanent magnetic poles on the ferromagnetic rotor. The rotor does not have any windings. It generates torque through magnetic reluctance.
Reluctance motor sub types include synchronous, variable, switched and variable stepping.
Reluctance motors can deliver high power density at low cost, making them attractive for many applications. Disadvantages include high torque ripple (the difference between maximum and minimum torque during one revolution) when operated at low speed, and noise due to torque ripple.
This project is designed to control the speed of a single-phase induction motor by using operating knob, which is commonly used in home automation applications. The main advantage of these motors is their ability to operate from a single-phase power supply
This is a presentation about linear induction motor. here I had explained LIM clearly like effects, construction, working, application and many more. most of people don't know much about this type of motor. I hope this will be usefull to you
An electric motor is an electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate force in the form of rotation of a shaft.
A reluctance motor is a type of electric motor that induces non-permanent magnetic poles on the ferromagnetic rotor. The rotor does not have any windings. It generates torque through magnetic reluctance.
Reluctance motor sub types include synchronous, variable, switched and variable stepping.
Reluctance motors can deliver high power density at low cost, making them attractive for many applications. Disadvantages include high torque ripple (the difference between maximum and minimum torque during one revolution) when operated at low speed, and noise due to torque ripple.
This project is designed to control the speed of a single-phase induction motor by using operating knob, which is commonly used in home automation applications. The main advantage of these motors is their ability to operate from a single-phase power supply
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
Contact with Dawood Bhai Just call on +92322-6382012 and we'll help you. We'll solve all your problems within 12 to 24 hours and with 101% guarantee and with astrology systematic. If you want to take any personal or professional advice then also you can call us on +92322-6382012 , ONLINE LOVE PROBLEM & Other all types of Daily Life Problem's.Then CALL or WHATSAPP us on +92322-6382012 and Get all these problems solutions here by Amil Baba DAWOOD BANGALI
#vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore#blackmagicformarriage #aamilbaba #kalajadu #kalailam #taweez #wazifaexpert #jadumantar #vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore #blackmagicforlove #blackmagicformarriage #aamilbaba #kalajadu #kalailam #taweez #wazifaexpert #jadumantar #vashikaranspecialist #astrologer #palmistry #amliyaat #taweez #manpasandshadi #horoscope #spiritual #lovelife #lovespell #marriagespell#aamilbabainpakistan #amilbabainkarachi #powerfullblackmagicspell #kalajadumantarspecialist #realamilbaba #AmilbabainPakistan #astrologerincanada #astrologerindubai #lovespellsmaster #kalajaduspecialist #lovespellsthatwork #aamilbabainlahore #Amilbabainuk #amilbabainspain #amilbabaindubai #Amilbabainnorway #amilbabainkrachi #amilbabainlahore #amilbabaingujranwalan #amilbabainislamabad
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Quality defects in TMT Bars, Possible causes and Potential Solutions.PrashantGoswami42
Maintaining high-quality standards in the production of TMT bars is crucial for ensuring structural integrity in construction. Addressing common defects through careful monitoring, standardized processes, and advanced technology can significantly improve the quality of TMT bars. Continuous training and adherence to quality control measures will also play a pivotal role in minimizing these defects.
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
block diagram and signal flow graph representation
universal motor
1. A.C Machines (2140906)
Active Learning Assignment presentation
On
“UNIVERSAL MOTOR ”
prepared by : Guided by:
Shah Urvish Prof. Hitesh T Manani
Electrical Engineering Department
Batch – B3
1
(160123109016)
2. Synopsis
Basics of universal motor
Characteristics
Control aspects
Equivalent circuit
A closer look
Check the direction of rotation
Analysis
References
3. BACSIC OF UNIVERSAL MOTOR
The universal motor is special type of motor which is designed to operate on either dc or ac supply at
approximately the same speed and output. It is basically a series wound motor and hence it has high starting
torque and variable speed characteristics.
A dc series motor suffers form the following drawbacks when operated on ac supply
i. Its efficiency will poor due to hysteresis and eddy current losses.
ii. Power factor of the motor is low due to inductive reactance of the field and armature winding
iii. The sparking at the brushes will be excessive.
Therefore, some modification are necessary for the satisfactory operation of the universal motor on ac
supply
4. i. To reduce the hysteresis and eddy current losses, the field structure is laminated.
ii. Power factor is improved by reducing the reactance of armature and field winding. the reactance of the
filed winding is reduced by using small umber of turns of thick wire
iii. To reduce the effect of armature reactance and thereby improve the commutation and to reduce the
armature reactance a compensating winding is used.
The construction of universal motor is similar to dc series motor. However the whole magnetic field
structure is laminated to reduce the eddy current and hysteresis losses the armature is of wound type
with commutator and brushes and similar to small dc motor.
5. The series field winding is connected in series with the armature. In order to improve commutation and
hence reduce sparking high resistance brushes are used.
6. CONSTRUCTION
Manufactured in two types
1:- concentrated – pole , non – compensated
2:- distributed – field compensated
concentrated – pole , non – compensated
In case of large rating universal motors, a compensating winding is used for reducing the reactance and to improve
commutation this winding may be connected in series with armature or may be short-circuit in itself. The
compensated winding is placed in the slot at 900
(elect.) with the main field axis.
for high power ratings compensated type universal motors are used whereas for low power rating uncompensated
motor are used.
8. With input dc power the stator coil as permanent magnet like a dc motor & continues to rotate in the same
direction
The current though the rotor also reverses the current thought the electromagnets
Every pole the motor changes from north to south or from south to north
With input ac power it reverses the pole and thus the direction of rotation is obtained
Experiences no torque during current reversal but the average torque is sufficient to run the motor as if it were
connected to a dc power supply
The starting torque of universal motor is determined by the current that flows through the armature
12. CANCLUSION
2
D p a
p a
D a
T B I
B I
T I
µ
µ
µ
The direction of rotation (and Torque) is
independent of the polarity of the AC
source!
TD = Developed Torque
Bp = flux density due to current in field
Ia = armature current
14. Torque is inversely proportional to speed & directly proportional to the current
More current flows at high speed torque increases as magnetic flux density also increase
Low speed tends to cause magnetic saturation deteriorates the characteristic of the motor
In domestic application electrical motor the ability to control its speed
There are two control method are used
1 phase angle control
2 chopper control
16. Phase angel control Is simple and cost-effective solution
The speed of universal motor is controlled by using a triac
The gate of the triac can be controlled directly by the out put ports of a microcontroller
The whole circuitry Is usually connected
CHOPPER CONTROL
Pwm control
The ac voltage from the mains is rectified and then switched at a high frequency by a power MOSFET or an IGBT
Lower current ripple which reduces the harmonics
Reduces the copper and iron losses…….
17. REFERENCES
CHARLES I HUBER “ELECTRICAL MACHINES”
B.L.THERAJA, A.K THERAJA “A TEXBOOK OF ELECTRICAL MACHINES”
A TEXBOOK OF AC MACHINE “J.G.JAMNANI”