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Design of a Programmable MPPT Control Technology Based on FPGA

Author: DingZuo
Tutor: ZhangGang；LiuShuLin
School: Xi'an University of Science and Technology
Course: Control Theory and Control Engineering
Keywords: Maximum power point tracking FPGA Functional timing simulation Boost Converter
CLC: TP273
Type: Master's thesis
Year: 2011
Downloads: 108
Quote: 1
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Abstract


Renewable solar energy as a green energy to people of all ages , including the competing countries in the areas of development of solar photovoltaic technology . But the main problems of the photovoltaic generation is low utilization of the photovoltaic cells , thus improving the utilization of the photovoltaic cell to become a focus in the photovoltaic power generation . MPPT control technology is now recognized as an effective means to improve the efficiency of photovoltaic cells , so MPPT control methods has become an important aspect of the photovoltaic power generation . Perturbation and observation method targeted to improve the conversion efficiency of photovoltaic cells , on the basis of analysis and comparison of the traditional control methods , improved design method based FPGA devices digitized achieve maximum power point tracking control . Altera Corporation of EDA tools Quartus II software , using a top- down approach to the the controller RTL level design . The entire MPPT controller use of modular structure design , each module is portable , easy functional expansion and upgrade of the entire control system . After the design is completed , each module simulation . Finally, download to EP1C3T144C8N chips , test the system functions in FPGA development board . The MPPT controller applications designed to build maximum power point tracking experiments circuit , which Boost converter circuit as the MPPT control the main circuit . Comparative study of traditional perturbation method and the improved perturbation method results show that the method of tracking accuracy improved to 75% or more , at least 9 percentage points than traditional methods , tracking accuracy significantly better than the traditional method .

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