Reduction of cogging torque in permanent magnet machine
•Download as PPT, PDF•
3 likes•5,335 views
The document discusses various methods to reduce cogging torque in permanent magnet machines. Cogging torque is an undesirable torque pulsation caused by the interaction between permanent magnets and stator slots. Several techniques are presented: shaping magnets, lengthening the air gap, adding auxiliary grooves on magnets, skewing the rotor or stator, using slotless stators, asymmetrical magnet arrangements, changing the number of stator slots, skewing stator teeth, and shifting magnets axially. These techniques reduce cogging torque by 16-58% but also reduce the overall torque output in some cases. Slotless stators, bread loaf magnets, and using an odd number of stator slots are shown to
Report
Share
Report
Share
![What is Cogging Torque and Why reduce it ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Recommended
Speed control of dc motor
This document discusses various speed control methods for DC motors. It summarizes that the speed of a DC motor is directly proportional to the back EMF and inversely proportional to flux. For shunt motors, speed can be controlled through flux control by adding resistance to the field winding, armature control by adding resistance in series to the armature, and voltage control by varying the supply voltage. For series motors, speed is controlled through flux control methods like field and armature diversion, tapped fields, and paralleled fields as well as adding resistance in series with the armature. Series-parallel control is also described for variable speed applications.
Speed control of three phase im by vf open and close loop method
This document presents a simulation of speed control for a three-phase induction motor using open-loop and closed-loop V/F control methods. In the open-loop method, a PWM inverter drives the motor and the torque is observed to remain constant with varying rotor speed. In the closed-loop method, a PI controller provides feedback to vary the supply frequency to maintain a constant V/F ratio. Simulation results in MATLAB Simulink show that closed-loop control provides superior speed regulation compared to the open-loop method.
Transformer single phase and three phase
The document provides information about transformers, including:
- Transformers can change the magnitude of alternating voltage or current from one value to another using electromagnetic induction. They have no moving parts and are rugged and durable.
- A transformer essentially consists of two windings (primary and secondary) wound on a common laminated magnetic core. An alternating voltage applied to the primary induces an electromagnetic force in the secondary.
- The number of turns in each winding determines the ratio of voltages or currents between the primary and secondary. Calculations are provided for induced voltages, current transformations, and flux density based on transformer specifications.
Synchronous motor
This document discusses the synchronous motor, including its introduction, construction, and operating principle. A synchronous motor runs at a constant synchronous speed determined by the supply frequency. It consists of a stator winding and a rotor with salient poles. The rotor is excited by direct current to synchronize with the rotating stator field. A synchronous motor is not self-starting and requires an auxiliary method like an induction motor principle or separate starting motor.
Synchronous motor
The document discusses synchronous motors. It begins by introducing synchronous motors and explaining that their rotor rotates at the synchronous speed of the rotating magnetic field. It then describes how changing the load affects the motor's operation and discusses the motor's lack of starting torque. It proposes improvements to the starting torque using a squirrel cage rotor. Finally, it provides details on the typical construction of a synchronous machine, including laminated stator cores and projected pole rotors.
three phase inverter
This document describes a three phase inverter that converts DC voltage to AC voltage. There are two main modes of conduction for a three phase inverter - 180 degree conduction and 120 degree conduction. 180 degree conduction involves three switches being on at a time, while 120 degree conduction only has two switches on at a time. The document provides circuit diagrams and equations to calculate the output voltages under each conduction mode. Waveforms are also shown to illustrate the phase and line voltages.
Ch-37-Alternators.pdf
The document discusses alternator construction and operation. It describes how alternators use a stationary armature winding and rotating magnetic field to generate alternating current. The key points are:
- Alternators have a stationary armature winding mounted on the stator and field windings on the rotating rotor. As the rotor spins, it induces an alternating current in the stationary armature coils.
- This arrangement allows the high-voltage AC output to be extracted directly from the stator terminals without brushes or slip rings. It also places the low-voltage DC field circuit on the rotor.
- The frequency of the generated AC is determined by the number of magnetic pole pairs on the rotor and the rotational speed according to the
PMSM
The presentation contains the details about types of PMSM,Speed control of PMSM and comparison of PMSM drives
Recommended
Speed control of dc motor
This document discusses various speed control methods for DC motors. It summarizes that the speed of a DC motor is directly proportional to the back EMF and inversely proportional to flux. For shunt motors, speed can be controlled through flux control by adding resistance to the field winding, armature control by adding resistance in series to the armature, and voltage control by varying the supply voltage. For series motors, speed is controlled through flux control methods like field and armature diversion, tapped fields, and paralleled fields as well as adding resistance in series with the armature. Series-parallel control is also described for variable speed applications.
Speed control of three phase im by vf open and close loop method
This document presents a simulation of speed control for a three-phase induction motor using open-loop and closed-loop V/F control methods. In the open-loop method, a PWM inverter drives the motor and the torque is observed to remain constant with varying rotor speed. In the closed-loop method, a PI controller provides feedback to vary the supply frequency to maintain a constant V/F ratio. Simulation results in MATLAB Simulink show that closed-loop control provides superior speed regulation compared to the open-loop method.
Transformer single phase and three phase
The document provides information about transformers, including:
- Transformers can change the magnitude of alternating voltage or current from one value to another using electromagnetic induction. They have no moving parts and are rugged and durable.
- A transformer essentially consists of two windings (primary and secondary) wound on a common laminated magnetic core. An alternating voltage applied to the primary induces an electromagnetic force in the secondary.
- The number of turns in each winding determines the ratio of voltages or currents between the primary and secondary. Calculations are provided for induced voltages, current transformations, and flux density based on transformer specifications.
Synchronous motor
This document discusses the synchronous motor, including its introduction, construction, and operating principle. A synchronous motor runs at a constant synchronous speed determined by the supply frequency. It consists of a stator winding and a rotor with salient poles. The rotor is excited by direct current to synchronize with the rotating stator field. A synchronous motor is not self-starting and requires an auxiliary method like an induction motor principle or separate starting motor.
Synchronous motor
The document discusses synchronous motors. It begins by introducing synchronous motors and explaining that their rotor rotates at the synchronous speed of the rotating magnetic field. It then describes how changing the load affects the motor's operation and discusses the motor's lack of starting torque. It proposes improvements to the starting torque using a squirrel cage rotor. Finally, it provides details on the typical construction of a synchronous machine, including laminated stator cores and projected pole rotors.
three phase inverter
This document describes a three phase inverter that converts DC voltage to AC voltage. There are two main modes of conduction for a three phase inverter - 180 degree conduction and 120 degree conduction. 180 degree conduction involves three switches being on at a time, while 120 degree conduction only has two switches on at a time. The document provides circuit diagrams and equations to calculate the output voltages under each conduction mode. Waveforms are also shown to illustrate the phase and line voltages.
Ch-37-Alternators.pdf
The document discusses alternator construction and operation. It describes how alternators use a stationary armature winding and rotating magnetic field to generate alternating current. The key points are:
- Alternators have a stationary armature winding mounted on the stator and field windings on the rotating rotor. As the rotor spins, it induces an alternating current in the stationary armature coils.
- This arrangement allows the high-voltage AC output to be extracted directly from the stator terminals without brushes or slip rings. It also places the low-voltage DC field circuit on the rotor.
- The frequency of the generated AC is determined by the number of magnetic pole pairs on the rotor and the rotational speed according to the
PMSM
The presentation contains the details about types of PMSM,Speed control of PMSM and comparison of PMSM drives
Unit5ppts
This document discusses power plant economics, selection criteria, and environmental issues. It covers topics such as load curves, base load vs peak load, heat rates, cost per kW calculations, depreciation methods, present worth, reliability, and factors that influence the cost of power generation such as load factor, efficiency, and preventative maintenance. Diagrams are included to illustrate load curves and the daily loading pattern of a power station.
Solar Based Grass Cutter Machine Paper
This document describes a solar-powered grass cutting machine. It uses a 10W solar panel to charge a 12V battery, which then powers four DC motors - two for movement and two attached to cutting blades. An Atmega8 microcontroller controls the motors and uses an ultrasonic sensor to detect obstacles and change the machine's direction. The system is designed to be automated, pollution-free, and powered by renewable solar energy instead of gasoline or electricity from the grid. It aims to provide an efficient grass cutting solution without issues of power availability, fuel consumption, or emissions.
Basic electrical engineering
alternators its types and its functions….What you've just experienced is an example of an alternator breathing its last breath.
Your first thought might have been the battery is dying. In a sense, you would be right because the battery and the alternator are related, but the battery tends to get all the press.
This presentation aims to explain the mechanics of alternators, how you can diagnose problems and what you can do if you have a bad alternator.
You will come to now to some background information about alternators and the war of the currents.
Regenerative Braking of BLDC Motors
This document discusses regenerative braking of BLDC motors. It describes how kinetic energy from a motor during braking can be stored in a battery through regenerative braking. It then provides simulations and test results of using a 3-phase MOSFET bridge rectifier with a boost converter to regeneratively brake a BLDC hub motor on an e-bike. The maximum efficiency was 55% at 50% duty cycle, but maximum braking force occurred at 70% duty cycle. A PID controller is proposed to maintain a constant braking force at varying motor speeds.
Dc motor
The document discusses DC motors. It defines a DC motor as a machine that converts DC power into mechanical energy. It explains that DC motors operate by generating a magnetic field from coils of wire inside the motor that interacts with a static magnetic field from permanent magnets, causing the shaft to rotate. The document outlines the main types of DC motors - shunt, series, and compound - and provides examples of their applications. It notes advantages like high starting torque and speed control, and disadvantages such as higher costs.
Vector control of pmsm
The document discusses vector control of permanent magnet synchronous motors (PMSM). It begins by describing the dynamic model of a PMSM, including assumptions made about the rotor flux. It then derives the stator equations in the rotor reference frame to model the PMSM similarly to an induction motor. Vector control of the PMSM is then derived from its dynamic model to decouple the torque and flux channels by controlling the stator currents in the d-q reference frame. This allows controlling the PMSM similarly to a separately excited DC motor.
Final Synopsis- Project on Construction of electric vehicle
This document presents a project to develop an electric rickshaw to replace traditional petrol-powered rickshaws in India. The proposed electric rickshaw would be powered by a battery pack charged using renewable energy sources. It describes the design of the electric rickshaw, including components like the differential system, drum brakes, brushless DC motor, motor controller, lead-acid battery pack, and speedometer/charge indicator. The objective is to develop an affordable electric rickshaw that provides better passenger experience while reducing pollution in major cities. The project is currently in the first design and planning phase before building a prototype.
A PROJECT REPORT SIM & SPEED CONTROL OF INDUCTIO DRIVE
The document discusses speed control methods for three-phase induction motors. It analyzes the transients during starting of an induction motor with different machine parameters. It then examines various speed control methods including variable rotor resistance, variable stator voltage, and constant V/f control. Simulation results are presented to show the torque-speed characteristics for each method. Vector control is also introduced, which allows independent control of torque and flux.
MODELLING OF PMSM
This document summarizes the modeling of a permanent magnet synchronous motor (PMSM) in Simulink. It describes how a PMSM is modeled in the rotor synchronous reference frame using Park equations. It discusses how the electromagnetic torque produced by the motor depends on the quadrature stator current. It also describes how the speed is controlled by controlling the electromagnetic torque through regulating the quadrature current. Finally, it presents the simulation results for the currents, torque, and speed of the modeled PMSM motor.
Dc motor
This document discusses the working principle of a DC motor. It begins by introducing DC motors and stating that they convert DC electrical energy to mechanical energy. It then explains the basic components of a DC motor and how current flowing through the armature in a magnetic field produces torque, causing the motor to rotate. It details Fleming's left hand rule for determining the direction of rotation. The document also discusses how back EMF is produced and how it allows the motor to maintain constant speed under varying loads.
COGGING & CRAWLING IN INDUCTION MOTOR
ELECTRICAL ENGINEERING BY ASHUTOSH
VISIT MY FACEBOOK PAGE ON THIS LINK : -
https://www.facebook.com/ASHUTOSH.MIS...
Single Phase Induction Motor Speed Control
This document describes a project to control the speed of a single-phase induction motor. It uses components like op-amps, opto-isolators, SCRs, and a potentiometer. An op-amp operates in comparator mode to generate pulses that trigger SCRs connected in series with the motor. This allows adjusting the firing angle to control motor speed or lamp brightness. Single-phase induction motors are widely used because they are inexpensive and can operate from a single-phase power supply.
Solved problems on rectifiers
This document contains 13 solved problems related to rectifier circuits using diodes. The problems calculate various electrical characteristics of half-wave, full-wave, and bridge rectifier circuits, including DC and AC voltages and currents, power delivered to loads, ripple factor, transformer specifications, and diode voltage ratings. Example calculations are shown for circuits using a single diode, full-wave rectifiers, and full-wave rectifiers with LC filter components.
Design and Fabrication of Prototype Automatic Solar Grass Cutter for Trimming
This document describes the design and fabrication of a prototype solar-powered automatic grass cutter robot. A group of students at Muhammad Nawaz Shareef University of Engineering and Technology designed the robot to reduce pollution and noise from fuel-powered lawn mowers. The robot uses solar panels to charge its batteries and power brushless DC motors and a microcontroller to cut grass automatically. The document outlines the components, programming, assembly, performance comparisons, applications and future recommendations for the solar grass cutter robot.
Testing of dc machines_I
This document discusses different methods for testing DC machines. It describes the objectives of testing as determining if a machine's performance matches its design specifications and investigating any variations. Three main testing methods are outlined: direct, indirect, and regenerative. The direct method involves directly loading the machine and measuring efficiency. The indirect method determines performance characteristics from no-load test data using methods like Swinburne's test. Swinburne's test involves running the machine at no-load and recording parameters to calculate constant and stray losses. Examples of calculations for torque, output, and efficiency using data from brake tests are also provided.
Special motors
This document provides an overview of different types of electric motors, including DC motors, stepper motors, and their operating principles. It discusses conventional brushed DC motors and how they work using commutator and brushes. Brushless DC motors are also covered, noting they use electronic commutation instead of mechanical brushes. Stepper motors are introduced as motors that rotate in discrete steps when electrical pulses are applied. Their operation and characteristics such as resolution are explained. Applications of different motor types are briefly mentioned.
Open circuit and Short circuit test on transformer
To understand the basic working principle of a transformer.
To obtain the equivalent circuit parameters from Open circuit and Short circuit tests, and to estimate efficiency & regulation at various loads.
DC Motor Model
The document discusses a student project to design and build a DC motor. It includes sections on the motor model, materials and costs, specifications of the brush motor designed, and background information on DC motors and their operation. It also compares the advantages and disadvantages of DC motors and AC motors.
Induction motor
The document discusses induction motors. It explains that an induction motor works by electromagnetic induction, where the alternating current in the stator produces a rotating magnetic field that induces current in the rotor and causes it to turn. It describes the basic components of induction motors including the stator, rotor, and housing. It also discusses how varying the frequency of the alternating current supply can be used to control the motor's speed.
Field test
This document describes a field test conducted on a DC series motor to determine its efficiency. The test involves coupling two similar 3 kW, 220 V DC series motors together, with one operating as a motor driving the other as a generator. Voltage, current and speed measurements are taken under load. Calculations are shown to find losses, efficiency of the motor (73.43%) and generator (71.77%). A MATLAB program is provided that replicates the manual calculations. The results verify the efficiency values determined from the field test.
DE-CPS 2017 The INTO-CPS Cyber-Physical System Profile Alessandra Bagnato
The document summarizes the INTO-CPS (INtegrated TOolchain for Cyber-Physical Systems) profile, which specializes the SysML block concept into components for modeling cyber-physical systems. It describes an example using the three-tank water tank system to demonstrate the profile. The profile identifies two diagram types - architectural structure diagrams and connection diagrams. It also lists industrial partners collaborating on the project and plans for a summer school on CPS modeling.
More Related Content
What's hot
Unit5ppts
This document discusses power plant economics, selection criteria, and environmental issues. It covers topics such as load curves, base load vs peak load, heat rates, cost per kW calculations, depreciation methods, present worth, reliability, and factors that influence the cost of power generation such as load factor, efficiency, and preventative maintenance. Diagrams are included to illustrate load curves and the daily loading pattern of a power station.
Solar Based Grass Cutter Machine Paper
This document describes a solar-powered grass cutting machine. It uses a 10W solar panel to charge a 12V battery, which then powers four DC motors - two for movement and two attached to cutting blades. An Atmega8 microcontroller controls the motors and uses an ultrasonic sensor to detect obstacles and change the machine's direction. The system is designed to be automated, pollution-free, and powered by renewable solar energy instead of gasoline or electricity from the grid. It aims to provide an efficient grass cutting solution without issues of power availability, fuel consumption, or emissions.
Basic electrical engineering
alternators its types and its functions….What you've just experienced is an example of an alternator breathing its last breath.
Your first thought might have been the battery is dying. In a sense, you would be right because the battery and the alternator are related, but the battery tends to get all the press.
This presentation aims to explain the mechanics of alternators, how you can diagnose problems and what you can do if you have a bad alternator.
You will come to now to some background information about alternators and the war of the currents.
Regenerative Braking of BLDC Motors
This document discusses regenerative braking of BLDC motors. It describes how kinetic energy from a motor during braking can be stored in a battery through regenerative braking. It then provides simulations and test results of using a 3-phase MOSFET bridge rectifier with a boost converter to regeneratively brake a BLDC hub motor on an e-bike. The maximum efficiency was 55% at 50% duty cycle, but maximum braking force occurred at 70% duty cycle. A PID controller is proposed to maintain a constant braking force at varying motor speeds.
Dc motor
The document discusses DC motors. It defines a DC motor as a machine that converts DC power into mechanical energy. It explains that DC motors operate by generating a magnetic field from coils of wire inside the motor that interacts with a static magnetic field from permanent magnets, causing the shaft to rotate. The document outlines the main types of DC motors - shunt, series, and compound - and provides examples of their applications. It notes advantages like high starting torque and speed control, and disadvantages such as higher costs.
Vector control of pmsm
The document discusses vector control of permanent magnet synchronous motors (PMSM). It begins by describing the dynamic model of a PMSM, including assumptions made about the rotor flux. It then derives the stator equations in the rotor reference frame to model the PMSM similarly to an induction motor. Vector control of the PMSM is then derived from its dynamic model to decouple the torque and flux channels by controlling the stator currents in the d-q reference frame. This allows controlling the PMSM similarly to a separately excited DC motor.
Final Synopsis- Project on Construction of electric vehicle
This document presents a project to develop an electric rickshaw to replace traditional petrol-powered rickshaws in India. The proposed electric rickshaw would be powered by a battery pack charged using renewable energy sources. It describes the design of the electric rickshaw, including components like the differential system, drum brakes, brushless DC motor, motor controller, lead-acid battery pack, and speedometer/charge indicator. The objective is to develop an affordable electric rickshaw that provides better passenger experience while reducing pollution in major cities. The project is currently in the first design and planning phase before building a prototype.
A PROJECT REPORT SIM & SPEED CONTROL OF INDUCTIO DRIVE
The document discusses speed control methods for three-phase induction motors. It analyzes the transients during starting of an induction motor with different machine parameters. It then examines various speed control methods including variable rotor resistance, variable stator voltage, and constant V/f control. Simulation results are presented to show the torque-speed characteristics for each method. Vector control is also introduced, which allows independent control of torque and flux.
MODELLING OF PMSM
This document summarizes the modeling of a permanent magnet synchronous motor (PMSM) in Simulink. It describes how a PMSM is modeled in the rotor synchronous reference frame using Park equations. It discusses how the electromagnetic torque produced by the motor depends on the quadrature stator current. It also describes how the speed is controlled by controlling the electromagnetic torque through regulating the quadrature current. Finally, it presents the simulation results for the currents, torque, and speed of the modeled PMSM motor.
Dc motor
This document discusses the working principle of a DC motor. It begins by introducing DC motors and stating that they convert DC electrical energy to mechanical energy. It then explains the basic components of a DC motor and how current flowing through the armature in a magnetic field produces torque, causing the motor to rotate. It details Fleming's left hand rule for determining the direction of rotation. The document also discusses how back EMF is produced and how it allows the motor to maintain constant speed under varying loads.
COGGING & CRAWLING IN INDUCTION MOTOR
ELECTRICAL ENGINEERING BY ASHUTOSH
VISIT MY FACEBOOK PAGE ON THIS LINK : -
https://www.facebook.com/ASHUTOSH.MIS...
Single Phase Induction Motor Speed Control
This document describes a project to control the speed of a single-phase induction motor. It uses components like op-amps, opto-isolators, SCRs, and a potentiometer. An op-amp operates in comparator mode to generate pulses that trigger SCRs connected in series with the motor. This allows adjusting the firing angle to control motor speed or lamp brightness. Single-phase induction motors are widely used because they are inexpensive and can operate from a single-phase power supply.
Solved problems on rectifiers
This document contains 13 solved problems related to rectifier circuits using diodes. The problems calculate various electrical characteristics of half-wave, full-wave, and bridge rectifier circuits, including DC and AC voltages and currents, power delivered to loads, ripple factor, transformer specifications, and diode voltage ratings. Example calculations are shown for circuits using a single diode, full-wave rectifiers, and full-wave rectifiers with LC filter components.
Design and Fabrication of Prototype Automatic Solar Grass Cutter for Trimming
This document describes the design and fabrication of a prototype solar-powered automatic grass cutter robot. A group of students at Muhammad Nawaz Shareef University of Engineering and Technology designed the robot to reduce pollution and noise from fuel-powered lawn mowers. The robot uses solar panels to charge its batteries and power brushless DC motors and a microcontroller to cut grass automatically. The document outlines the components, programming, assembly, performance comparisons, applications and future recommendations for the solar grass cutter robot.
Testing of dc machines_I
This document discusses different methods for testing DC machines. It describes the objectives of testing as determining if a machine's performance matches its design specifications and investigating any variations. Three main testing methods are outlined: direct, indirect, and regenerative. The direct method involves directly loading the machine and measuring efficiency. The indirect method determines performance characteristics from no-load test data using methods like Swinburne's test. Swinburne's test involves running the machine at no-load and recording parameters to calculate constant and stray losses. Examples of calculations for torque, output, and efficiency using data from brake tests are also provided.
Special motors
This document provides an overview of different types of electric motors, including DC motors, stepper motors, and their operating principles. It discusses conventional brushed DC motors and how they work using commutator and brushes. Brushless DC motors are also covered, noting they use electronic commutation instead of mechanical brushes. Stepper motors are introduced as motors that rotate in discrete steps when electrical pulses are applied. Their operation and characteristics such as resolution are explained. Applications of different motor types are briefly mentioned.
Open circuit and Short circuit test on transformer
To understand the basic working principle of a transformer.
To obtain the equivalent circuit parameters from Open circuit and Short circuit tests, and to estimate efficiency & regulation at various loads.
DC Motor Model
The document discusses a student project to design and build a DC motor. It includes sections on the motor model, materials and costs, specifications of the brush motor designed, and background information on DC motors and their operation. It also compares the advantages and disadvantages of DC motors and AC motors.
Induction motor
The document discusses induction motors. It explains that an induction motor works by electromagnetic induction, where the alternating current in the stator produces a rotating magnetic field that induces current in the rotor and causes it to turn. It describes the basic components of induction motors including the stator, rotor, and housing. It also discusses how varying the frequency of the alternating current supply can be used to control the motor's speed.
Field test
This document describes a field test conducted on a DC series motor to determine its efficiency. The test involves coupling two similar 3 kW, 220 V DC series motors together, with one operating as a motor driving the other as a generator. Voltage, current and speed measurements are taken under load. Calculations are shown to find losses, efficiency of the motor (73.43%) and generator (71.77%). A MATLAB program is provided that replicates the manual calculations. The results verify the efficiency values determined from the field test.
What's hot (20)
Final Synopsis- Project on Construction of electric vehicle
Final Synopsis- Project on Construction of electric vehicle
A PROJECT REPORT SIM & SPEED CONTROL OF INDUCTIO DRIVE
A PROJECT REPORT SIM & SPEED CONTROL OF INDUCTIO DRIVE
Design and Fabrication of Prototype Automatic Solar Grass Cutter for Trimming
Design and Fabrication of Prototype Automatic Solar Grass Cutter for Trimming
Open circuit and Short circuit test on transformer
Open circuit and Short circuit test on transformer
Viewers also liked
DE-CPS 2017 The INTO-CPS Cyber-Physical System Profile Alessandra Bagnato
The document summarizes the INTO-CPS (INtegrated TOolchain for Cyber-Physical Systems) profile, which specializes the SysML block concept into components for modeling cyber-physical systems. It describes an example using the three-tank water tank system to demonstrate the profile. The profile identifies two diagram types - architectural structure diagrams and connection diagrams. It also lists industrial partners collaborating on the project and plans for a summer school on CPS modeling.
2017 Business Platform Day
로아컨설팅이 개최하는 연례 행사인 비즈니스 플랫폼 데이의 2017년 자료입니다.
- 4차 산업혁명과 디지털 트랜스포메이션
- 비즈니스 환경의 변화를 주도하게 될 디스럽티브 기술 현황
- 소비자의 일상에 나타나는 변화 (Communication/ Commerce/ Automotive/ Media&Contents)
Python과 Tensorflow를 활용한 AI Chatbot 개발 및 실무 적용
도입
AI Chatbot 소개
Chatbot Ecosystem
Closed vs Open Domain
Rule Based vs AI
Chat IF Flow and Story Slot
AI기반의 학습을 위한 Data 구성 방법
Data를 구하는 법 / Train을 위한 Word Representation
Data의 구성 / Data Augmentation(Intent, NER)
자연어처리 위한 AI 적용 방안
Intent (Char-CNN) / QnA (Seq2Seq)
Named Entity Recognition (Bi-LSTM CRF) / Ontology (Graph DB)
Chatbot Service를 위한 Architecture 구성
Chatbot Architecture
NLP Architecture
Web Service Architecture
Bot builder / Chatbot API
Test Codes for Chatbot
실무에서 발생하는 문제와 해결 Tips
Ensemble and voting / Trigger / Synonym(N-Gram)
Tone Generator / Parallel processing / Response Speed
마무리
[설명 코드]
Text Augmentation / Slot Bot / QA Bot / Graph DB / Response Generator
Viewers also liked (7)
DE-CPS 2017 The INTO-CPS Cyber-Physical System Profile Alessandra Bagnato
DE-CPS 2017 The INTO-CPS Cyber-Physical System Profile Alessandra Bagnato
[OpenStack Days Korea 2016] Track3 - 방송제작용 UHD 스트로지 구성 및 테스트
[OpenStack Days Korea 2016] Track3 - 방송제작용 UHD 스트로지 구성 및 테스트
Similar to Reduction of cogging torque in permanent magnet machine
Permanent magnet Synchronous machines
In recent years, Permanent Magnet Synchronous Machines (PMSMs) are increasing
applied in several areas such as generation, traction, automobiles, robotics and aerospace
technology. Basically PMSG topology has been beneficial for slow speed and variable speed
operation and steady state output power produced in operation. PMSG is a part of
synchronous machine family, so its construction features almost equivalent to synchronous
machine.
With respect of designing a PMSG, the permanent magnetic pole lies on the rotor and
armature winding are in the inner part of stator that is electrically connected to the load.
Armature winding consists of the set of three conductors which has phase difference 1200
apart to each other and providing a uniform force or torque on the generator’s rotor. To
operate PMGS, it is connected to wind turbine through a shaft without gear box and rotate at
slow speed. This uniform torque produced by the resultant magnetic flux which induces
current in the armature winding. The stator magnetic field combined spatially with rotor
magnetic flux and rotates as the same speed of the rotor. So the two magnetic fields
synchronously rotate in PGSM to maintain the relative motion of rotor and stator.
Thus the permanent magnets rotates at constant speed without any DC excitation system,
which means it has not required any slip rings and contact brushes to make it more reliability
or efficient.
Wind Turbine generator
The document describes the design of an axial flux permanent magnet generator. It includes specifications for electrical and mechanical components. Key points:
1) An axial flux design was selected for its simplicity and efficiency over a radial design. It uses a stationary stator and rotating rotor with magnets.
2) Electrical specifications include selecting neodymium magnets, 9 coils in a star configuration to produce 3-phase power, and calculations to achieve a 60V 3-phase output at 750 RPM.
3) Mechanically, aluminum, steel, and plastics are used. Alignment is critical and achieved via a casing connecting the upper and lower rotors with male-female features and bolts. Total mass is estimated at
ECCE2016_FSPM_LN_Chandan
This document outlines Chandan Sikder and Iqbal Husain's research on analyzing stator vibration and acoustic noise in flux switching permanent magnet (FSPM) machines to enable a low-noise design. They developed analytical models to estimate vibration mode frequencies in segmented stator structures and identified design parameters that influence these frequencies. Their approach combines noise minimization with previously developed cogging torque reduction techniques. Testing of a prototype FSPM showed reduced noise through structural finite element analysis-informed design changes compared to a base design.
IRJET- Solar Powered Water Pumping System
This document describes the design of a brushless DC motor for use in a solar powered water pumping system. Key points:
- A 0.3 hp BLDC motor was designed to operate from a single 300 Wp solar panel to pump water in remote areas without electricity.
- The motor was optimized for high efficiency of over 80% at rated load through the use of neodymium magnets and distributed winding on the stator.
- Testing showed the BLDC motor achieved higher discharge rates and efficiency compared to an equivalent PMDC motor, making it more suitable for solar water pumping.
- The optimized design improved performance over a wide range of operating conditions from low to high solar irradiation
DESIGN AND FABRICATION OF ELECTROMAGNETIC BRAKING SYSTEM
This document describes the design and fabrication of an electromagnetic braking system. The system uses electromagnetic induction to generate a braking force on a rotating disc or wheel. When current is applied to an electromagnet coil, a magnetic field is created that induces eddy currents in the metal disc. This generates a braking torque due to the electromagnetic interaction between the magnetic field and eddy currents, slowing and stopping the wheel's rotation. The document outlines the design calculations for components like pulleys and belts used to drive the wheel. It also discusses the objectives, methodology, merits and limitations of the electromagnetic braking system, and potential applications.
Cogging Torque Minimization of PMBLDC Motor Using Magnet Shifting and Magnet ...
This document summarizes research on techniques to minimize cogging torque in permanent magnet brushless DC motors (PMBLDC). It examines magnet shifting and magnet shaping techniques applied to three motor models of different sizes (200W, 2.2kW, 20kW) using finite element analysis software. The key findings are:
1) Magnet shifting the rotor magnets by 30 degrees reduced cogging torque the most, by 45.46-66.67% depending on the motor.
2) Rounded and chamfered magnet shapes also significantly reduced cogging torque, by up to 53.28% in the 200W motor.
3) Both magnet shifting and shaping techniques helped reduce cogging torque and
Design Optimization and Analysis of a Steam Turbine Rotor Grooves
1. The document describes a finite element analysis performed to optimize the design of steam turbine rotor grooves.
2. The analysis evaluated different fillet radii ranging from 13 to 50 mm to determine the maximum principal stress and stress concentration factor.
3. The optimal design was found to have a fillet radius of 40 mm, which reduced the stress concentration factor to 1.152 and deformation to 0.066121 mm.
SEMINAR PPT
This seminar presentation summarizes research on reducing rotor eddy current losses in an axial flux permanent magnet machine. It introduces the machine topology, which uses segmented steel laminations and permanent magnets to reduce losses. Finite element analysis was used to optimize the lamination thickness and magnet segmentation, showing reductions in total electromagnetic losses. A 100kW prototype was manufactured and tested, validating the computed performance improvements over designs without segmentation.
Analysis and Electricity production by Ocean Current Turbine
CFD analysis report of NACA profiles blade for designing Ocean current turbine near Andaman & Nicobar island. And the amount of energy that can be generated by the selected profile
Reduction in Cogging Torque and Flux per Pole in BLDC Motor by Adapting U-Cla...
Reduction in Cogging Torque and Flux per Pole in BLDC Motor by Adapting U-Cla...International Journal of Power Electronics and Drive Systems
This document presents a study on reducing cogging torque and flux per pole in a brushless DC motor by adapting U-clamped magnetic poles. Finite element analysis is used to calculate cogging torque and flux per pole for different magnetic pole shapes, including conventional, iso-diametric, semi-circled, and proposed U-clamped shapes. Results show the U-clamped poles greatly reduce cogging torque compared to other designs by reducing certain Fourier coefficients related to cogging torque. Flux per pole is also reduced slightly by decreasing the rate of change of flux density, thereby further reducing cogging torque. Various slot numbers are analyzed, demonstrating the effectiveness of U-clamped poles for an 8-pole motor withCondition Based monitoring Training
The document discusses various aspects of condition monitoring through vibration analysis. It defines condition monitoring and different types of maintenance. It explains why condition monitoring is important and some key physical parameters that are measured. It then focuses on condition monitoring through vibration analysis, discussing concepts like amplitude, frequency, causes of vibration, and analyzing case studies of different machines. Key points covered include vibration measurement and analysis, identifying issues like unbalance, misalignment, looseness and bearing defects.
Design of stator & rotor for Wound Induction Motor
The document provides details on the design of stator and rotor slots for a 3-phase wound-rotor induction motor. It discusses the construction of the motor including the stator core and winding, wound rotor with slip rings, and end shields. For stator design, it describes slot types, selection of number of slots, conductor cross-section, slot area and size, length of mean turn and resistance calculation. For rotor design, it discusses air gap length, number of rotor slots selection to avoid crawling and cogging, end ring current, design of wound rotor including number of turns and rotor current calculation. It provides an example design problem for a 30kW squirrel cage induction motor and asks to design a suitable rotor
Electromagnetic Performance due to Tooth-tip Des
Permanent Magnet (PM) machines are favorable as an alternative to other
machine topologies due to simpler construction and high torque density.
However, it may result hight torque ripple due to an influence of cogging
torque and electronic commutation. In this paper, comparisons of phase
back-emf, static torque and cogging torque due to influence of tooth-tip
asymmetry in 12-slot/10-pole double-layer and 12-slot/10-pole single layer
winding machines are carried out using 2D Finite-Element Analysis. At rated
condition, the stator asymmetry has great influence on the torque
performance as there is significant reduction of torque ripple in 12-slot/10-
pole mahine equipped with single layer winding than one equipped with
double layer winding machine. It si confirmed that an optimum torque
performance is desirable via stator iron modification in PM machines.
Three Phase Induction Motor Design (Electrical Machine Design)
DESIGN THE MAIN DIMENSION AND ROTOR OF A 0.746KW, 400V, 3‐PHASE, 50HZ, 1432 RPM,
SQUIRREL CAGE INDUCTION MOTOR. THE MACHINE IS TO BE STARTED BY A STAR‐DELTA STARTER. THE EFFICIENCY IS 90% AND POWER FACTOR IS 0.8 AT FULL‐LOAD.
Design:
Main Dimention
Stator(Stator Winding,Stator Core)
Rotor(Squirrel Cage Rotor)
1)Air Gap
2)Rotor Slots
3)Rotor Bars
4)End Rings
5)Rotor Core
Analysis of Three and Five-phase Double Stator Slotted Rotor Permanent Magnet...
Analysis of Three and Five-phase Double Stator Slotted Rotor Permanent Magnet...International Journal of Power Electronics and Drive Systems
This paper discusses the performance of three and five-phase double stator slotted rotor permanent magnet generator (DSSR-PMG). The objective of this research is to propose five-phase DSSR-PMG structure that could minimize output voltage ripple compared to three phase. In this research Finite Element Analysis (FEA) is used to simulate the characteristic of the three and five-phase permanent magnet generator at various speeds. The characteristic of back-EMF, flux linkage, cogging torque and flux density for three and five-phase configurations is presented. As a result, five-phase DSSR-PMG shows a lower cogging torque and voltage ripple compared to three-phase. The cogging torque for five-phase is 80% lower than three-phase DSSR-PMG and the ripple voltage (peak to peak) of back-EMF in five-phase is 2.3% compared to the three-phase DSSR-PMG which is 55%.Comparison Study of Optimization of Surface Roughness Parameters in Turning E...
This document presents a study that compares surface roughness optimization in turning EN1A steel on a CNC lathe with and without coolant. Experiments were conducted using an L9 orthogonal array to investigate the effects of cutting speed, feed rate, and depth of cut on surface roughness. Analysis of variance found that feed rate had the greatest influence on surface roughness, both with and without coolant. The optimal parameters to minimize surface roughness were a cutting speed of 3000 rpm, feed rate of 0.1 mm/rev, and depth of cut of 0.2 mm. Material removal rate was highest at maximum speed, feed, and depth and lowest at minimum levels of the parameters. Theoretical material removal rates exceeded actual rates in all experiments
Pmdc motors
The document discusses permanent magnet DC (PMDC) motors. It describes the basic components and working principle of PMDC motors, including how torque is produced via the interaction between current in the armature coils and the magnetic field from permanent magnets. The document also discusses motor performance curves, efficiency calculations, motor sizing based on load requirements, and applications of PMDC motors.
Design and Validation of Efficient Flywheel Cup of Magneto to Improve the The...
This document describes the design and validation of an efficient flywheel cup for a magneto to improve its thermal behavior. The flywheel cup is designed with lateral cooling holes to assist in cooling the winding coils. Computational fluid dynamics (CFD) analysis is performed using ANSYS software to study the thermal performance and heat dissipation for different scenarios - with no holes/airflow, maximum airflow through axial holes, and maximum airflow through lateral holes. CFD results are compared to physical testing results. The maximum airflow through lateral holes condition indicates lower temperature generation compared to the no holes condition and maximum axial holes condition. Lower coil temperatures ensure the winding insulation is not affected by excess heat.
Manual de construccion de aero generador
This document provides instructions for building a permanent magnet generator (PMG). It includes:
1. An overview of the PMG components and how they work together to generate electricity from wind or water power.
2. A list of required materials and tools for constructing the PMG, including magnets, wiring, resin, and metal parts.
3. Directions for making specialized jigs and moulds needed to accurately wind coils and cast resin parts, including descriptions of a coil winding machine and molds for the stator and rotors.
A1102020113
The document presents an electromagnetic and thermal analysis of an internal permanent magnet synchronous machine (IPMSM) design. It describes the initial design process including calculating dimensions, winding arrangement, and material selection. Finite element analysis was used to optimize the design by varying parameters like number of turns, magnet size, and flux barrier placement. This improved the torque from 5.25Nm to 12.94Nm. A lumped thermal network model was developed and losses were simulated. Temperature distribution was calculated and found to be within safe limits. Case studies on efficiency and load characteristics validated the machine configuration.
Similar to Reduction of cogging torque in permanent magnet machine (20)
DESIGN AND FABRICATION OF ELECTROMAGNETIC BRAKING SYSTEM
DESIGN AND FABRICATION OF ELECTROMAGNETIC BRAKING SYSTEM
Cogging Torque Minimization of PMBLDC Motor Using Magnet Shifting and Magnet ...
Cogging Torque Minimization of PMBLDC Motor Using Magnet Shifting and Magnet ...
Design Optimization and Analysis of a Steam Turbine Rotor Grooves
Design Optimization and Analysis of a Steam Turbine Rotor Grooves
Analysis and Electricity production by Ocean Current Turbine
Analysis and Electricity production by Ocean Current Turbine
Reduction in Cogging Torque and Flux per Pole in BLDC Motor by Adapting U-Cla...
Reduction in Cogging Torque and Flux per Pole in BLDC Motor by Adapting U-Cla...
Design of stator & rotor for Wound Induction Motor
Design of stator & rotor for Wound Induction Motor
Three Phase Induction Motor Design (Electrical Machine Design)
Three Phase Induction Motor Design (Electrical Machine Design)
Analysis of Three and Five-phase Double Stator Slotted Rotor Permanent Magnet...
Analysis of Three and Five-phase Double Stator Slotted Rotor Permanent Magnet...
Comparison Study of Optimization of Surface Roughness Parameters in Turning E...
Comparison Study of Optimization of Surface Roughness Parameters in Turning E...
Design and Validation of Efficient Flywheel Cup of Magneto to Improve the The...
Design and Validation of Efficient Flywheel Cup of Magneto to Improve the The...
Recently uploaded
HCL Notes and Domino License Cost Reduction in the World of DLAU
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-and-domino-license-cost-reduction-in-the-world-of-dlau/
The introduction of DLAU and the CCB & CCX licensing model caused quite a stir in the HCL community. As a Notes and Domino customer, you may have faced challenges with unexpected user counts and license costs. You probably have questions on how this new licensing approach works and how to benefit from it. Most importantly, you likely have budget constraints and want to save money where possible. Don’t worry, we can help with all of this!
We’ll show you how to fix common misconfigurations that cause higher-than-expected user counts, and how to identify accounts which you can deactivate to save money. There are also frequent patterns that can cause unnecessary cost, like using a person document instead of a mail-in for shared mailboxes. We’ll provide examples and solutions for those as well. And naturally we’ll explain the new licensing model.
Join HCL Ambassador Marc Thomas in this webinar with a special guest appearance from Franz Walder. It will give you the tools and know-how to stay on top of what is going on with Domino licensing. You will be able lower your cost through an optimized configuration and keep it low going forward.
These topics will be covered
- Reducing license cost by finding and fixing misconfigurations and superfluous accounts
- How do CCB and CCX licenses really work?
- Understanding the DLAU tool and how to best utilize it
- Tips for common problem areas, like team mailboxes, functional/test users, etc
- Practical examples and best practices to implement right away
How to Get CNIC Information System with Paksim Ga.pptx
Pakdata Cf is a groundbreaking system designed to streamline and facilitate access to CNIC information. This innovative platform leverages advanced technology to provide users with efficient and secure access to their CNIC details.
GraphSummit Singapore | Neo4j Product Vision & Roadmap - Q2 2024
Maruthi Prithivirajan, Head of ASEAN & IN Solution Architecture, Neo4j
Get an inside look at the latest Neo4j innovations that enable relationship-driven intelligence at scale. Learn more about the newest cloud integrations and product enhancements that make Neo4j an essential choice for developers building apps with interconnected data and generative AI.
20240605 QFM017 Machine Intelligence Reading List May 2024
Everything I found interesting about machines behaving intelligently during May 2024
Best 20 SEO Techniques To Improve Website Visibility In SERP
Boost your website's visibility with proven SEO techniques! Our latest blog dives into essential strategies to enhance your online presence, increase traffic, and rank higher on search engines. From keyword optimization to quality content creation, learn how to make your site stand out in the crowded digital landscape. Discover actionable tips and expert insights to elevate your SEO game.
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...
The choice of an operating system plays a pivotal role in shaping our computing experience. For decades, Microsoft's Windows has dominated the market, offering a familiar and widely adopted platform for personal and professional use. However, as technological advancements continue to push the boundaries of innovation, alternative operating systems have emerged, challenging the status quo and offering users a fresh perspective on computing.
One such alternative that has garnered significant attention and acclaim is Nitrux Linux 3.5.0, a sleek, powerful, and user-friendly Linux distribution that promises to redefine the way we interact with our devices. With its focus on performance, security, and customization, Nitrux Linux presents a compelling case for those seeking to break free from the constraints of proprietary software and embrace the freedom and flexibility of open-source computing.
UiPath Test Automation using UiPath Test Suite series, part 5
Welcome to UiPath Test Automation using UiPath Test Suite series part 5. In this session, we will cover CI/CD with devops.
Topics covered:
CI/CD with in UiPath
End-to-end overview of CI/CD pipeline with Azure devops
Speaker:
Lyndsey Byblow, Test Suite Sales Engineer @ UiPath, Inc.
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024
Neha Bajwa, Vice President of Product Marketing, Neo4j
Join us as we explore breakthrough innovations enabled by interconnected data and AI. Discover firsthand how organizations use relationships in data to uncover contextual insights and solve our most pressing challenges – from optimizing supply chains, detecting fraud, and improving customer experiences to accelerating drug discoveries.
20240607 QFM018 Elixir Reading List May 2024
Everything I found interesting about the Elixir programming ecosystem in May 2024
GraphSummit Singapore | The Future of Agility: Supercharging Digital Transfor...
Leonard Jayamohan, Partner & Generative AI Lead, Deloitte
This keynote will reveal how Deloitte leverages Neo4j’s graph power for groundbreaking digital twin solutions, achieving a staggering 100x performance boost. Discover the essential role knowledge graphs play in successful generative AI implementations. Plus, get an exclusive look at an innovative Neo4j + Generative AI solution Deloitte is developing in-house.
Full-RAG: A modern architecture for hyper-personalization
Mike Del Balso, CEO & Co-Founder at Tecton, presents "Full RAG," a novel approach to AI recommendation systems, aiming to push beyond the limitations of traditional models through a deep integration of contextual insights and real-time data, leveraging the Retrieval-Augmented Generation architecture. This talk will outline Full RAG's potential to significantly enhance personalization, address engineering challenges such as data management and model training, and introduce data enrichment with reranking as a key solution. Attendees will gain crucial insights into the importance of hyperpersonalization in AI, the capabilities of Full RAG for advanced personalization, and strategies for managing complex data integrations for deploying cutting-edge AI solutions.
GraphSummit Singapore | Graphing Success: Revolutionising Organisational Stru...
Sudheer Mechineni, Head of Application Frameworks, Standard Chartered Bank
Discover how Standard Chartered Bank harnessed the power of Neo4j to transform complex data access challenges into a dynamic, scalable graph database solution. This keynote will cover their journey from initial adoption to deploying a fully automated, enterprise-grade causal cluster, highlighting key strategies for modelling organisational changes and ensuring robust disaster recovery. Learn how these innovations have not only enhanced Standard Chartered Bank’s data infrastructure but also positioned them as pioneers in the banking sector’s adoption of graph technology.
National Security Agency - NSA mobile device best practices
Threats to mobile devices are more prevalent and increasing in scope and complexity. Users of mobile devices desire to take full advantage of the features
available on those devices, but many of the features provide convenience and capability but sacrifice security. This best practices guide outlines steps the users can take to better protect personal devices and information.
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAU
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-und-domino-lizenzkostenreduzierung-in-der-welt-von-dlau/
DLAU und die Lizenzen nach dem CCB- und CCX-Modell sind für viele in der HCL-Community seit letztem Jahr ein heißes Thema. Als Notes- oder Domino-Kunde haben Sie vielleicht mit unerwartet hohen Benutzerzahlen und Lizenzgebühren zu kämpfen. Sie fragen sich vielleicht, wie diese neue Art der Lizenzierung funktioniert und welchen Nutzen sie Ihnen bringt. Vor allem wollen Sie sicherlich Ihr Budget einhalten und Kosten sparen, wo immer möglich. Das verstehen wir und wir möchten Ihnen dabei helfen!
Wir erklären Ihnen, wie Sie häufige Konfigurationsprobleme lösen können, die dazu führen können, dass mehr Benutzer gezählt werden als nötig, und wie Sie überflüssige oder ungenutzte Konten identifizieren und entfernen können, um Geld zu sparen. Es gibt auch einige Ansätze, die zu unnötigen Ausgaben führen können, z. B. wenn ein Personendokument anstelle eines Mail-Ins für geteilte Mailboxen verwendet wird. Wir zeigen Ihnen solche Fälle und deren Lösungen. Und natürlich erklären wir Ihnen das neue Lizenzmodell.
Nehmen Sie an diesem Webinar teil, bei dem HCL-Ambassador Marc Thomas und Gastredner Franz Walder Ihnen diese neue Welt näherbringen. Es vermittelt Ihnen die Tools und das Know-how, um den Überblick zu bewahren. Sie werden in der Lage sein, Ihre Kosten durch eine optimierte Domino-Konfiguration zu reduzieren und auch in Zukunft gering zu halten.
Diese Themen werden behandelt
- Reduzierung der Lizenzkosten durch Auffinden und Beheben von Fehlkonfigurationen und überflüssigen Konten
- Wie funktionieren CCB- und CCX-Lizenzen wirklich?
- Verstehen des DLAU-Tools und wie man es am besten nutzt
- Tipps für häufige Problembereiche, wie z. B. Team-Postfächer, Funktions-/Testbenutzer usw.
- Praxisbeispiele und Best Practices zum sofortigen Umsetzen
AI 101: An Introduction to the Basics and Impact of Artificial Intelligence
Imagine a world where machines not only perform tasks but also learn, adapt, and make decisions. This is the promise of Artificial Intelligence (AI), a technology that's not just enhancing our lives but revolutionizing entire industries.
“Building and Scaling AI Applications with the Nx AI Manager,” a Presentation...
“Building and Scaling AI Applications with the Nx AI Manager,” a Presentation...Edge AI and Vision Alliance
For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/building-and-scaling-ai-applications-with-the-nx-ai-manager-a-presentation-from-network-optix/
Robin van Emden, Senior Director of Data Science at Network Optix, presents the “Building and Scaling AI Applications with the Nx AI Manager,” tutorial at the May 2024 Embedded Vision Summit.
In this presentation, van Emden covers the basics of scaling edge AI solutions using the Nx tool kit. He emphasizes the process of developing AI models and deploying them globally. He also showcases the conversion of AI models and the creation of effective edge AI pipelines, with a focus on pre-processing, model conversion, selecting the appropriate inference engine for the target hardware and post-processing.
van Emden shows how Nx can simplify the developer’s life and facilitate a rapid transition from concept to production-ready applications.He provides valuable insights into developing scalable and efficient edge AI solutions, with a strong focus on practical implementation.Pushing the limits of ePRTC: 100ns holdover for 100 days
At WSTS 2024, Alon Stern explored the topic of parametric holdover and explained how recent research findings can be implemented in real-world PNT networks to achieve 100 nanoseconds of accuracy for up to 100 days.
Recently uploaded (20)
HCL Notes and Domino License Cost Reduction in the World of DLAU
HCL Notes and Domino License Cost Reduction in the World of DLAU
How to Get CNIC Information System with Paksim Ga.pptx
How to Get CNIC Information System with Paksim Ga.pptx
GraphSummit Singapore | Neo4j Product Vision & Roadmap - Q2 2024
GraphSummit Singapore | Neo4j Product Vision & Roadmap - Q2 2024
20240605 QFM017 Machine Intelligence Reading List May 2024
20240605 QFM017 Machine Intelligence Reading List May 2024
Best 20 SEO Techniques To Improve Website Visibility In SERP
Best 20 SEO Techniques To Improve Website Visibility In SERP
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...
Why You Should Replace Windows 11 with Nitrux Linux 3.5.0 for enhanced perfor...
UiPath Test Automation using UiPath Test Suite series, part 5
UiPath Test Automation using UiPath Test Suite series, part 5
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024
GraphSummit Singapore | The Future of Agility: Supercharging Digital Transfor...
GraphSummit Singapore | The Future of Agility: Supercharging Digital Transfor...
Full-RAG: A modern architecture for hyper-personalization
Full-RAG: A modern architecture for hyper-personalization
GraphSummit Singapore | Graphing Success: Revolutionising Organisational Stru...
GraphSummit Singapore | Graphing Success: Revolutionising Organisational Stru...
National Security Agency - NSA mobile device best practices
National Security Agency - NSA mobile device best practices
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAU
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAU
AI 101: An Introduction to the Basics and Impact of Artificial Intelligence
AI 101: An Introduction to the Basics and Impact of Artificial Intelligence
“Building and Scaling AI Applications with the Nx AI Manager,” a Presentation...
“Building and Scaling AI Applications with the Nx AI Manager,” a Presentation...
Pushing the limits of ePRTC: 100ns holdover for 100 days
Pushing the limits of ePRTC: 100ns holdover for 100 days
Reduction of cogging torque in permanent magnet machine
- 1. REDUCTION OF COGGING TORQUE IN PERMANENT MAGNET MACHINE Krithik Kumar Chandrashekar, Nikhil Kulkarni
- 4. Base Model Design Parameter Value Stator Outer Radius 70mm Stator Inner Radius 29mm Rotor Inner Diameter 23.5mm Magnet Height 4 mm Stator Slot opening 3mm Pole Shoe depth 2mm Pole Width 20 mm Speed 1800 rpm Torque ~4-5 Nm
- 5. Parameters for the Base Model
- 17. Comparison Of Some of The Techniques Model Number Average Torque (Nm) Cogging Torque(Nm) Base Model 5.038 0.2053 1. Slotless 5.024 0.1175 2. Bread Loaf 3.8789 0.0223 3.Assymetry 4.9612 0.1628 4.Airgap Lengthening 4.5717 0.1712 5.Auxillary Groove 4.775 0.1066
- 18. Questions