Do you want to publish a course? Click here

Improving control in VAV systems using fuzzy logic controller to saving electrical energy

استخدام المتحكم العائم لتحسين التحكم بأنظمة التكييف متغير الحجم بهدف توفير الاستهلاك الكهربائي

2401   1   35   0 ( 0 )
 Publication date 2016
and research's language is العربية
 Created by Shamra Editor




Ask ChatGPT about the research

As known the electric energy is one of the most important factor of development, but using it causes bad environmental impacts due to depending on fuel as the source of electrical generation. Using renewable energy is still limited and needs a huge fixed costs, so it is important to reduce electrical consumption by monitoring and controlling equipment to achieve its function with lower consumption. HVAC sector is the most consumption part in buildings, therefor any saving in this sector will affect manifestly on the total electrical consumption in the building and this is done by control system. Control systems are in continuous improving, so it is needed to exploit them in saving electrical energy. In this research, studying control of VAV system and designing fuzzy logic controller to drive supply fan in order to reduce its electrical consumption, this is performed through designing practical prototype of the supply fan with its tools and software which are designed to view the electrical energy saving which we gain it by using fuzzy logic controller.


Artificial intelligence review:
Research summary
تناول البحث موضوع استخدام المتحكم العائم لتحسين التحكم بأنظمة التكييف متغير الحجم بهدف توفير الاستهلاك الكهربائي. يشكل الاستهلاك الكهربائي في أنظمة التكييف جزءاً كبيراً من الاستهلاك الكلي للطاقة في المباني، وبالتالي فإن تحسين التحكم في هذه الأنظمة يمكن أن يؤدي إلى توفير كبير في الطاقة. تم تصميم نموذج فيزيائي مصغر لنظام التكييف مع مروحة تزويد مركزية، وتم استخدام متحكم عائم للتحكم بسرعة المروحة بناءً على متغيرات الضغط والتدفق. أظهرت النتائج أن استخدام المتحكم العائم يمكن أن يوفر حتى 75% من الاستهلاك الكهربائي مقارنةً بتشغيل المروحة بسرعة ثابتة، و63% مقارنةً باستخدام التحكم التقليدي بالضغط. تم تطبيق هذه التقنية في مشروع وردة مسار في دمشق، حيث أظهرت النتائج توفيراً سنوياً يصل إلى 49% من استهلاك الطاقة الكهربائية للمروحة. يوصي البحث بتعميم هذه التقنية على باقي أجزاء نظام التكييف لتحقيق توفير أكبر في استهلاك الطاقة.
Critical review
دراسة نقدية: يعتبر البحث مهماً في مجال تحسين كفاءة استهلاك الطاقة في أنظمة التكييف، إلا أن هناك بعض النقاط التي يمكن تحسينها. أولاً، لم يتم التطرق بشكل كافٍ إلى التحديات العملية التي قد تواجه تطبيق المتحكم العائم في أنظمة التكييف الكبيرة والمعقدة. ثانياً، كان من الممكن تقديم تحليل اقتصادي مفصل يوضح تكلفة تنفيذ هذه التقنية مقارنةً بالتوفير المتوقع في استهلاك الطاقة. ثالثاً، يفضل إجراء تجارب إضافية على نطاق أوسع وفي ظروف تشغيل مختلفة للتحقق من فعالية المتحكم العائم في بيئات متنوعة. بشكل عام، البحث يقدم مساهمة قيمة في مجال إدارة الطاقة، ولكن يتطلب المزيد من الدراسات لتأكيد النتائج وتعميمها على نطاق أوسع.
Questions related to the research
  1. ما هو الهدف الرئيسي من البحث؟

    الهدف الرئيسي من البحث هو تحسين التحكم بأنظمة التكييف متغير الحجم باستخدام متحكم عائم لتوفير الاستهلاك الكهربائي.

  2. ما هي النتائج الرئيسية التي توصل إليها البحث؟

    النتائج الرئيسية هي أن استخدام المتحكم العائم يمكن أن يوفر حتى 75% من الاستهلاك الكهربائي مقارنةً بتشغيل المروحة بسرعة ثابتة، و63% مقارنةً باستخدام التحكم التقليدي بالضغط.

  3. أين تم تطبيق نتائج الدراسة عملياً؟

    تم تطبيق نتائج الدراسة عملياً في مشروع وردة مسار في دمشق، حيث أظهرت النتائج توفيراً سنوياً يصل إلى 49% من استهلاك الطاقة الكهربائية للمروحة.

  4. ما هي التوصيات التي قدمها البحث؟

    البحث يوصي بتعميم تقنية المتحكم العائم على باقي أجزاء نظام التكييف لتحقيق توفير أكبر في استهلاك الطاقة، واستخدام المعالجة العائمة ضمن الحاسوب لتحقيق سرعة معالجة عالية.


References used
KOLOKOTSAA, D; STAVRAKAKISB, G.S; KALAITZAKISB, K; AGORISC, D. Genetic algorithms optimized fuzzy controller for the indoor environmental management in buildings implemented using PLC and local operating network. Engineering Applications of Artificial Intelligence Greece. Vol. 15, 2002, 417–428
PARAMESHWARAN, R; KARUNAKARAN, R; VINU RAJA KUMAR, C; INIYAN, S. Energy conservative building air conditioning system controlled and optimized using fuzzy-genetic algorithm. Energy and Buildings India. Vol. 42, 2010, 745– 762
BEHROOZ, F; RAMLI, A; SAMSUDIN, K. A survey on applying different control methods approach in building automation systems to obtain more energy efficiency. International Journal of the Physical Sciences Malaysia. Vol. 6(9), 2011, 2308- 2314
rate research

Read More

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.
The building sector is considered one of the leading sectors in energy-consumption. In addition to lighting, heating and cooling systems have become important consumers in all buildings (both residential, administrative, and service both private and public) ensuring a comfortable environment for staff and workers and improving productivity at the lowest possible cost. This research aims to study the control quantities of fresh and exhausted air in large halls and auditoriums, where the occupancy level changes. This is done by adjusting the amount of fresh and exhausted air according to the occupancy via CO2 sensors, which measure the ratio of CO2 in the targeted places, controlling the volume of fresh and exhausted air according to the number of available people. A case study was done to use control systems; final results and conclusions have been illustrated.
In this paper, a problem of ride comfort enhancement in a moving vehicle was introduced and controlled by damping force to deduce vibration caused by road profile. Sliding mode control was used to give the damping force in two degree of freedom su spension system. A mechanic model of suspension system was given, dampers and springs were used for passive damping to reduce chattering and sliding mode control for semi-active control with proposed method by using supervised fuzzy logic control for chattering decreasing was designed. A simulation with the given initial conditions was designed using Matlab/Simulink. By computing of root mean square error we got that the proposed method gave the best responses with the smallest chattering compared with traditional mechanical damping and sliding mode control. All results plotted using Matlab/Simulink.
Fuzzy logic control is used to connect a photovoltaic system to the electrical grid by using three phase fully controlled converter (inverter), This controller is going to track the maximum power point and inject the maximum available power from th e PV system to the grid by determining the trigger angle that must be applied on the switches: Linguistic variables are going to be chosen to determine the amount of change in the trigger angle of the inverter to track the maximum power.
Unified Power Flow Controller (UPFC) is one of the most effective Flexible AC Transmission Systems (FACTS) devices for controlling power flow and improving stability of power system. To achieve the functionality of UPFC, a proper and sufficient con trol system should be designed for this device. Our research proposes a Fuzzy Logic control approach to control UPFC. The proposed control scheme is used to control and coordinate voltage and phase angle signals of Voltage Source Converters (VSCs) of UPFC, where these two signals are used to control active and reactive power flow in transmission line. To validate the proposed control scheme, a single-machine double line infinite bus power system equipped with UPFC is modeled using PSCAD/EMTDC software package. Three phase fault with ground case is simulated and investigated under the proposed controller. The modeling and simulation results show the effectiveness of the UPFC under the proposed control scheme for improving power system stability under the three phase fault case. The results also show the robustness and superiority of the proposed controller compared to conventional PI controller as well as it guarantees the closed-loop stability system and has a good tracking behavior.
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