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Based on the new Z-source inverter photovoltaic technology research

Author: QiZhenBiao
Tutor: ZhangXing
School: Hefei University of Technology
Course: Power Electronics and Power Drives
Keywords: New Z-source inverter Modulation strategy PV Grid Parameter Design MPPT
CLC: TM615
Type: Master's thesis
Year: 2010
Downloads: 457
Quote: 4
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Abstract


Energy depletion and environmental pollution in the growing problem of today, new energy development and utilization of more and more attention . Solar energy is currently the world's cleanest , most realistic prospect of large-scale development and utilization of renewable energy sources. Including the use of solar photovoltaic attracted world wide attention. The solar photovoltaic and solar photovoltaic power generation is the major trends in use , will be rapid development. Inverter, as solar and other new energy system is an important component in the energy conversion and energy transfer process plays an important role in traditional inverter main voltage source inverters and current source inverse transformer , but the two types of inverters present their own shortcomings . To improve photovoltaic system flexibility , reliability and grid power quality , we use a novel Z-source inverter topology as a system and network converter unit . Article on the new Z-source inverter in-depth analysis on the basis of the entire grid-connected PV systems were studied. Its main contents could include a new Z-source inverter working principle analysis , modeling, analysis, and PWM modulation strategy analysis , and on this basis, analyzes the new Z-source inverter switching voltage / current stress ; focused analysis of the application photovoltaic power generation system to the control system , and the use of classical control theory illustrated root locus design parameters for the regulator ; pairs used in photovoltaic power generation system maximum power point tracking and islanding protection methods were analyzed and summarized , to achieve a system the optimization and stability. In order to verify the correctness of the analysis , DSP-based platform to build a new experimental prototype Z-source inverter , simulation and experimental results verify the above theoretical research and design analysis is correct.

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