Do you want to publish a course? Click here

Mechanical losses account in the transmission mechanism of the wind turbine and its impact on efficiency

حساب الضّياعــات الميكانيكيّــة في آلية نقل الحركة لعنفة ريحية و تأثيرها على المردود

1792   1   30   0 ( 0 )
 Publication date 2015
and research's language is العربية
 Created by Shamra Editor




Ask ChatGPT about the research

Our research includes the transmission mechanism of the wind turbine and the calculation of losses, such as loss of mechanical ventilation and friction loss and the loss of lubrication between the gear teeth design. Aims and access to high reliability work and thus obtain high efficiency and taking advantage of electronic programs, We observed that each type of previous losses have an impact on the overall loss of Gearbox, Depending on the working conditions, For example, at low speeds, loss of friction between the teeth is a great percentage of the total loss, And thus controls the overall efficiency of the transport system, while at high speeds noticed this low percentage of loss, while the loss of lubrication and ventilation rate rose.


Artificial intelligence review:
Research summary
يتناول البحث تصميم آلية نقل الحركة لعنفة ريحية، وحساب الضياعات الميكانيكية مثل ضياع التهوية وضياع الاحتكاك وضياع التزييت بين أسنان المسننات بهدف تخفيضها وزيادة وثوقية العمل للحصول على مردود عالي. تم استخدام برامج إلكترونية لحساب تأثير كل نوع من الضياعات على الضياع الكلي لعلبة السرعة. أظهرت النتائج أن ضياع الاحتكاك بين الأسنان يشكل النسبة العظمى من الضياع الكلي عند السرعات المنخفضة، بينما يرتفع تأثير ضياعات التزييت والتهوية عند السرعات المرتفعة. تم تصميم علبة السرعة باستخدام لغة البرمجة (الماتلاب) لتأمين طاقة كهربائية لمنزل منعزل، وتم حساب مواصفات علبة السرعة وعرض النتائج في جداول. أظهرت الدراسة أن ضياع الطاقة بالاحتكاك يشكل أكثر من 85% من الضياع الكلي، وأن المردود الكلي يزداد مع زيادة سرعة الدوران. توصي الدراسة بتخفيض ضياع الاحتكاك في المرحلة الأولى وضياع التهوية والاحتكاك في المرحلتين الثانية والثالثة لزيادة مردود علبة السرعة.
Critical review
دراسة نقدية: يعتبر البحث ذو أهمية كبيرة في مجال تحسين كفاءة أنظمة نقل الحركة في العنفات الريحية. ومع ذلك، كان من الممكن أن يكون البحث أكثر شمولية إذا تم تضمين تحليل اقتصادي لتكاليف تنفيذ التوصيات المقترحة. كما أن استخدام لغة البرمجة (الماتلاب) قد يكون محدودًا بالنسبة لبعض الباحثين الذين قد لا يكون لديهم خلفية برمجية قوية. كان من الأفضل أيضًا تضمين دراسة مقارنة مع أنظمة نقل حركة أخرى لمعرفة مدى تفوق التصميم المقترح. على الرغم من ذلك، فإن البحث يقدم إسهامًا قيمًا في فهم وتحليل الضياعات الميكانيكية وتأثيرها على كفاءة أنظمة نقل الحركة.
Questions related to the research
  1. ما هي الأنواع الرئيسية للضياعات الميكانيكية التي تم دراستها في البحث؟

    تم دراسة ضياعات التهوية، ضياع الاحتكاك، وضياع التزييت بين أسنان المسننات.

  2. كيف يؤثر ضياع الاحتكاك على الضياع الكلي لعلبة السرعة عند السرعات المنخفضة؟

    عند السرعات المنخفضة، يشكل ضياع الاحتكاك بين الأسنان النسبة العظمى من الضياع الكلي، مما يؤثر بشكل كبير على المردود الكلي لنظام النقل.

  3. ما هي التوصيات الرئيسية التي قدمها البحث لتحسين مردود علبة السرعة؟

    يوصي البحث بتخفيض ضياع الاحتكاك في المرحلة الأولى، وتخفيض ضياع التهوية والاحتكاك في المرحلتين الثانية والثالثة لزيادة مردود علبة السرعة.

  4. ما هي الأدوات البرمجية التي استخدمت في تصميم علبة السرعة؟

    تم استخدام لغة البرمجة (الماتلاب) لتصميم علبة السرعة وحساب مواصفاتها.


References used
DIAB .Y. THESE pour obtenir le garde de docteur "analyse des perte de puissance dans les transmissions par engrenages A grande vite" lyon.france;2005
DUFAILLY.J."calcul de la capacité de charge des engrenages cylindriques de transmission de puissance ". 1998
Vaishya M.and Houser D.R. Modeling and measurement of sliding friction for gear analysis  American gear Manufacturers association, 1999,No.99 FTMS1,PP 1- 20
rate research

Read More

This study treat the effect of the Suction method as a way of the boundary layer controlling in order to avoid or at least delay the boundary layer separation and to explain the effectiveness of this method in improving the aerodynamic performance of the Airfoils of the studied wind turbine blade and thus the possibility of obtaining better electrical output of the wind turbine, that is performance improving of wind turbines and obtains a better design.
This paper focuses on the estimation schemes of a viable position for timing belt drives where the position of the carriage (load) is to be determined via reference models receiving input from a position sensor attached to the actuator of the timin g belt. A detailed analysis of the transmission error sources is presented, and a number of relevant mathematical models is developed using a priori knowledge of the process. This paper demonstrates that such schemes are very effective when the drive system is not subjected to external loads and operating conditions do not change considerably i.e. ambient temperature, and belt tension.
reliance on new and renewable sources of energy has grown in order to obtain electric power without the use of traditional fossil fuel sources. And thus solve the problems of the global energy crisis and also maintain a clean environment, through the fight against the dangers of global warming and its negative results Wind power is considered as one of the most important of these alternative energies. We will work in this research in order to be able to control wind turbine with variable speed through pitch angle control in order to organize power and control the rotational speed in order to make the power ideal. Where we will be using a fuzzy controller to control pitch angle instead of the traditional controllers, which is expected to improve system response and provide ease in the application and modification and reduction in the cost. By reference study we came to the result showing that most previous studies in advanced wind energy systems have addressed to control wind turbine using conventional controllers from PI or PID type. Show we have the problem of the need to know the exact mathematical model of the system. Where traditional controllers of wind turbines that operate at variable speed are based on mathematical models which may be complex and non-linear and neglect often physical phenomena, for example, magnetic saturation which leads to complexity in the calculation and unexpected performance of the driven system. The proposed research aims to provide a complete study through modeling and simulation using the Matlab about the use of fuzzy controller to control the wind turbine where traditional controllers of type PI will be designed to control the pitch angle and to control the rotational speed and fuzzy PI controllers to control the pitch angle. Results will be get and discussed and conclusion will be extracted from them. Research Results showed that the fuzzy control improves transient state behavior, but the steady-state behavior is better controlled when we use PI controller. So and based on the result we got, the PI controller can't be replaced actually with the fuzzy controller.
As a result of the development of the use of reinforced Composites with fibers in practical applications continuously, research aims to study the effect of proportion piroxide additives to unsaturated polyester resin on the tensile properties of th e samples prepared from unsaturated polyester resin reinforced with glass fiber used in wind turbine blades manufacturing, and also studying the effect of for the application of heat treatment operations on the hardening of the unsaturated polyester and tensile properties after heat treatment process the application in order to improve the properties of these blades. Test samples were prepared containing ratios (1% - 1.5% - 2%) of methyl Etel ketone piroxide MEKP and test results showed that the best ratio at 1.5%. While the heat treatment results showed that the best values for tensile strength at break of the samples are treated to a time of / 48 hours /.
In this research, a study of solution to the problems of transmission in wind turbines, where the electronic appliances and gearboxes components responsible for much of the wind turbine problems as they increase the cost of operation and maintenan ce of wind turbines and here comes the role of variable transport systems ratios, which is a solution more efficient than in fixed proportions regimes where create a dynamic model of the turbine wind using the aerodynamic properties of the blade wind and calculate torque when the wind changing speeds values and this for each of the wind turbine with proportions variable order and fixed ratio using MATLAB software and after study shows that energy production is slightly higher and more importantly, so it is possible to say that the CVT system is a candidate to be the subject of research for future developments of the technology of wind turbines.
comments
Fetching comments Fetching comments
Sign in to be able to follow your search criteria
mircosoft-partner

هل ترغب بارسال اشعارات عن اخر التحديثات في شمرا-اكاديميا