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Research on Digital Controlled Single-Phase Inverter and Its Grid Connecting Technology

Author: ZhouYuZuo
Tutor: ChenXin
School: Nanjing University of Aeronautics and Astronautics
Course: Power Electronics and Power Drives
Keywords: Inverter Digital control Run independently And network operation Operating mode switching
CLC: TM464
Type: Master's thesis
Year: 2009
Downloads: 239
Quote: 4
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Abstract


With the growing global energy crisis and environmental pollution problems , the development and utilization of clean, renewable energy is imperative . The present study more solar photovoltaic cells , wind turbines and fuel cells and other renewable energy generation . Geographical complementarity and optimal allocation of these renewable energy compared to the traditional fossil energy with geographically dispersed and energy to change the characteristics of random , centralized energy supply can not be achieved , the form of distributed generation energy resources . Distributed power grid subject to certain interfaces , such as the grid-connected inverter , power to the remote load , or directly to the inverter AC load power supply to the local . Grid / independent dual mode inverter can achieve the interactive use of renewable energy power generation system with the grid to provide electricity to load uninterrupted system flexibility . This paper studies the digital control technology based on TMS320F2812 single-phase SPWM inverter . Sinusoidal pulse width modulation inverter technology , the establishment of a mathematical model and simulation model of the inverter , the inverter control system theory laid the foundation for analysis and digital simulation . Followed by the system 's hardware and software design , to build a fully digital control inverter control platform . Went on grid inverter , compared the grid inverter circuit topology and control technology , discussed achieve the inverter smooth grid off net programs in the the SPWM control of grid-connected inverter system on the basis of the model , according to the system 's overall control scheme , details of system hardware and software design thinking . The experiments show that the platform can be run independently of the digital SPWM inverter and grid running . Finally, introduced a separate / grid dual-mode inverter analysis of the conditions and requirements of the control and switch between the two modes of operation , and simulation grid , off-grid control method is feasible sex .

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CLC: > Industrial Technology > Electrotechnical > Transformers, converters and reactors > Converter > Inverter
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