Design and construction of an axial flux permanent por Alexandros Konstantinidis
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Ponencia de Alexandros Konstantinidis (SEYNers) durante su participación en el workShop de la Semana de la Energía Limpia de Canarias (4 y 10 de abril de 2016) organizado por ei ICEACAN - Instituto de las Comunidades Energéticas Autosuficlentes de Canarias - islas Cananas - España
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This document discusses different types of electric motors. It describes the basic components of a DC motor including the rotor, stator, and air gap. It then discusses advantages of series and permanent magnet DC motors. Permanent magnet DC motors have higher efficiency and power density. Synchronous motors require supplemental mechanisms to start but provide precise speed control. Induction motors are the most common type due to their simple and rugged design, and can operate at constant speed from no load to full load. However, variable speed control requires a variable frequency drive.
Induction Motors Matching Permanent Magnet Performances at Lower Costs
Due to a continued concern on the external dependence of permanent magnets in Europe, induction technology is being pushed beyond its limits to maximise performance.
With novel materials, material characterisation and multi-domain design, power-speed capability of laminated rotor induction motors can match that typically associated with surface permanent magnet machines, at a fraction of the cost.
This session reviews the findings relating to lower cost induction motors, highlighting how they can successfully be used as an alternative to permanent magnets.
Electric motors
The document discusses electric motors and motor efficiency. It provides details on how electric motors work using electromagnetism to convert electricity into mechanical motion. It then discusses the components and operation of simple DC motors and 3-pole motors. The document also discusses how motor efficiency is important and outlines standards used to determine motor efficiency. It provides an overview of efficiencies for different motor sizes and describes ways to improve motor efficiency, such as using more efficient NEMA Premium motors.
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This document presents the design of a simple auto-cleaning solar panel system by 4 students (Meshal Alrajhi, Khalid Alshamrani, Mohammed Alzahrani, Faisal Alshamrani) advised by Dr. Nader Nader. The objectives are to design an improved, high-efficiency self-cleaning solar panel and reuse cleaning products. It motivates using renewable energy and discusses design constraints, specifications, engineering standards, calculations, CAD model, experimental setup and results. In the future, the students recommend further testing and improvements to the system.
Study and Analysis of Savonious Vertical Axis Wind Turbine with Neodymium Per...
This document summarizes a study on improving the efficiency of a Savonious vertical axis wind turbine (VAWT) through the use of a neodymium permanent magnet rotor. Key points:
- VAWTs have simpler design and lower maintenance costs than horizontal axis wind turbines (HAWTs) but lower efficiency. This study aims to increase VAWT efficiency.
- The design incorporates a permanent magnet rotor to reduce the drag force and torque needed for blade rotation, allowing operation at lower wind speeds of 2-3 m/s.
- Components of the VAWT design are modeled using CAD software, including three cup-shaped blades, tower, shaft, bearings, and generator.
Maglev Windmill
This is about magnetically levitated maglev windmill.
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Current and future wind turbine design trends
Many new challenges in the design of wind turbine generators, the ever-growing sizes and the increasingly demanding grid compliance requirements, etc. Where are we now and what could be the future?
5.5 off main-grid technologies for power generation in rural contexts
This document provides an overview of off-grid power generation technologies for rural contexts. It begins with a 4-step process for designing off-grid energy systems that matches local needs with available resources in an optimized and cost-effective manner. The document then discusses assessing local energy needs and available solar, wind, and hydro resources. It provides technology summaries of solar photovoltaics, small wind turbines, and small hydropower systems. Hybrid systems that combine these technologies with batteries or diesel generators are also discussed. The document concludes with considerations for evaluating the impact of off-grid technologies on local development.
Efficient Motor Commutation through Advanced Position Sensing - The Trend tow...
The session describes how contactless magnetic position sensors are optimized for use in high-speed brushless DC (BLDC) motors to meet reliability/efficiency requirements.
Attendees will learn:
• Major advantages of BLDC motors including higher efficiency, low noise, longer life, and higher reliability
• Key position sensing parameters and their relevance in the applications
• How contact-less magnetic position sensors are optimized for use in BLDC motor apps
• BLDC motor applications and key requirements in automotive and automation industries
Design Of 1 KW DC Motor
This document describes the design of a 1 kW DC motor. It discusses the design of key components including the stator, rotor, field windings, and armature windings. The stator components designed include the yoke, pole shoes, pole cores, and field windings. The rotor or armature design includes the armature, armature winding housed in slots, and commutator. Parameters used in the design such as number of poles, turns in the field winding, and materials like copper and cast iron are also described. Performance metrics like maximum motor speed and generated torque are calculated based on the design parameters.
Power Generation by using Suspension System
This document describes a project to generate electricity using the motion of a vehicle's suspension system. The researchers designed a system that attaches DC motors to a vehicle's suspension. As the suspension compresses and expands over rough roads, it causes a belt and pulley mechanism connected to the motors to turn, generating electricity. They constructed a prototype using common materials and tested that it could generate 6-9 volts of power during driving, which would be enough to charge a vehicle's battery. The document discusses the design, components, calculations, advantages and limitations of the system. It concludes that recycling vibration energy from vehicle suspensions in this way could help improve electric vehicle efficiency.
wind energy Seminar
This document discusses renewable energy resources, specifically wind energy technology. It provides information on wind power potential in India, the evolution of wind turbines from ancient uses to modern electricity generation, types of wind turbines including horizontal axis and vertical axis designs, key components of wind turbines like blades and towers, and advantages and disadvantages of wind power. Key points covered include India's wind power potential of 46,092 MW, the declining costs of wind energy production from 1979 to 2012, and how wind farms are needed to provide electricity at utility scales.
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- 1. Design of locally manufactured small generators for low cost rural applications
- 2. Objective: To describe the power system and the procedure of the construction of an axial flux generator Steps 1. Design of the pico – power system 2. Design of the generator 3. Construction of the generation 4. Costing
- 3. Low cost rural applications Applications • Agricultural applications in the developing world or in off-grid areas electrification for small community or small farm. • Easy construction in a local lab by users or local . Turbines • Wind turbines • Hydro turbines
- 4. Design of an autonomous small power system Connection to autonomous small-scale battery systems
- 5. Axial flux vs radial flux generators Simple construction Low cost Light weight Brushless-good heat dissipation Easy airgap adjustment Advantages of an axial flux permanent magnet generator
- 6. Design of an axial flux permanent magnet generator Power rating 200 W 350 W 700 W 800W 1000 W 1200 W Blade radius (for wind turbine) 1200 mm 1800 mm 2400 mm 3000 mm 3600 mm 4200 mm Rotor diameter 230mm 250mm 300 mm 350 mm 400 mm 450 mm Rotor thickness 6 mm 6 mm 8 mm 10 mm 10 mm 10 mm Number of poles 8 8 24 32 32 32 Number of coils 6 6 18 24 24 24
- 11. Machine assembly
- 12. Generator Cost Nominal Power 400 W (iron-cored) 850 W (Rturb=1.2m) 3 kW (Rturb=2.25 m) 5 kW (Rturb=3m) Total cost 139 € 309 € 410 € 961 € Magnet cost 77 € 151 € 213 € 584 € Copper cost 15 € 44 € 70 € 119 € Total mass 8.80 kg 12.47 kg 35.48 kg 61.43 kg