Substantiation of the topic and abstract master thesis

SUBSTANTIATION OF THE TOPIC AND ABSTRACT MASTER THESIS
The working hypothesis is that the use of a supercapacitor battery connected to the intermediate DC bus of solar photovoltaic installations (SPVP) will make it possible to optimize the main parameters, as well as improve the performance of solar photovoltaic stations with a power of up to 10 kW.
of supercapacitors into the composition of SPVP will make it possible to obtain the following effects:

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  partial power supply of the main load;
  
• 
  power supply of peak loads;
  
• 
  voltage support on the branches of the DC circuit;
  
• 
  reducing the system response time to impulses that occur at the time of connecting consumers, which results in short bursts of generation or consumption;
  

- reducing the required capacity and increasing the service life of the battery.
Relevance of the topic.
Significant energy savings can be achieved by using supercapacitors in SPVP with a pronounced time-varying impulse load. Such as photovoltaic water lifting systems, where an instantaneous power surge is needed to start the pump motor, which a traditional battery cannot provide.
Object of research : Solar Nature enterprise , Tashkent
Subject of research: modes of joint operation of supercapacitors and batteries as part of a solar photovoltaic station
The purpose of the research : Improving the efficiency of power supply to an agricultural consumer from an autonomous solar photovoltaic station by improving the connection schemes for batteries with supercapacitors.
Tasks set in the dissertation work:
1. Studying the problems of quality and power supply to the consumer from an autonomous solar photovoltaic station associated with the accumulation of electricity.
2. Simulation of operating modes of an autonomous solar photovoltaic station with various schemes for connecting batteries and supercapacitors
3. Analysis of consumer power supply processes from a solar photovoltaic station with various battery and supercapacitor connection schemes to improve its efficiency and reliability.
Expected results .

1. 
   A working scheme of an autonomous solar photovoltaic station for connecting batteries and supercapacitors has been developed.
   
2. 
   A methodology for calculating the parameters of an autonomous solar photovoltaic station of the developed scheme for connecting batteries and supercapacitors has been compiled.
   
3. 
   Experimental studies were carried out at an experimental autonomous solar photovoltaic station of the developed scheme for connecting batteries and supercapacitors
   
4. 
   The technical and economic indicators of an autonomous solar photovoltaic station of the developed scheme for connecting batteries and supercapacitors for the conditions of Uzbekistan were determined
   

Research methods - simulation modeling of an autonomous solar photovoltaic plant with batteries and supercapacitors based on Mathlab / Simulink .
Scientific novelty - schemes for connecting batteries and supercapacitors of an autonomous solar photovoltaic station.
Chapters and structure of the dissertation . The master's thesis consists of 82 pages printed on a computer, which includes 6 tables, 13 figures and 43 references to literature.

Scientific Supervisor ____________ Associate Professor A.I. _ A narbaev
Master _____________________ J . E. T Ulkunov