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Research strategy and single-phase photovoltaic systems and network control

Author: SongTaoSong
Tutor: HuTianYou
School: University of Electronic Science and Technology
Course: Power Electronics and Power Drives
Keywords: Single-phase photovoltaic grid strategy double loop control
CLC: TM615
Type: Master's thesis
Year: 2011
Downloads: 310
Quote: 2
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Abstract


With the development of social economy, the rapid population growth and the improvement of people’s living standard, on the one hand, the traditional energy is going to be used up, on the other hand, the environment pollution problem becomes more and more serious, therefore the development of new energy available is imperative. The Solar energy has the advantage of no pollution, no noise, renewability and wide distribution, So the world are studying on it. An important aspect of solar energy utilization is photovoltaic (pv) grid generation, and in recent years it has been developed rapidly. Grid control strategy as the key technology of the photovoltaic energy system determines the success and quality of photovoltaic (pv) grid generation. In recent years, it is the key research object.Therefore, this paper put single-phase photovoltaic power generation system as the research object,and studied the main theory and key technical. This paper makes a detailed analysis and research of the single-phase (pv) power system structure, working principle, parameter design of main components and the grid control strategy, and on this basis designs a single-phase photovoltaic power generation system. This paper mainly content has the following respects.1. This paper introduces the classification of photovoltaic (pv) grid inverter and topological structure, puts forward the single-phase photovoltaic energy system overall design scheme and states in the topological structure and work principle of the no transformer isolation single-phase two levels of photovoltaic (pv) grid inverter system.2. This paper makes a detailed analysis of the current common grid current control strategy advantages and disadvantages, and proposes in this foundation the improved double loop control strategy, with matlab simulation software related mathematical modeling and simulation proves the feasibility of the control strategy.3. According to the main technical parameters of 3kW single-phase photovoltaic (pv) grid power system, the main controller uses TMS320LF2407A as the design scheme. This paper analyzes the key components of the Boost main circuit and the inverter main circuit, and according to the whole system operation needs, detailed analysis of the design of the control circuit, drive circuit and signal regulate circuit.4. Finally built the hardware and software experimental platform of 3kW single-phase photovoltaic power generation systems, got the experimental results of the resistance load and grid generation and verified the control strategy of this design.

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CLC: > Industrial Technology > Electrotechnical > Power generation, power plants > Variety of power generation > Solar power
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