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2. DOCUMENT FORMAT
• Abstract:
• Introduction:
• Literature Survey:
• System Analysis:
• Existing System:
• Disadvantages:
• Proposed System:
• Advantages:
• System Requirements:
• Block Diagram:
• Working Flow Diagram:
• Circuit Diagram:
• Implementation:
• Modules Description:
• System Study:
• System Testing:
• Software Description:
• Sample code:
• Conclusion:
• Future Enhancement:
• References:
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3. ONLINE VARIABLE TOPOLOGY-TYPE
PHOTOVOLTAIC GRID-CONNECTED INVERTER
TITLE
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4. ABSTRACT
In photovoltaic (PV) grid-connected generation system, the key focus is how to expand
the generation range of the PV array and enhance the total efficiency of the system. This paper
originally derived expressions of the total loss and grid current total harmonics distortions of
cascaded inverter and H-bridge inverter under the conditions of variable output voltage and power of
the PV array. It is proved that, compared with the H-bridge inverter, the operation range of the
cascaded inverter is wider, whereas the total loss is larger. Furthermore, a novel online variable
topology-type grid-connected inverter is proposed. A bidirectional power switch is introduced into
the conventional cascaded inverter to connect the negative terminals of the PV arrays. When the
output voltages of the PV arrays are lower, the proposed inverter works under cascaded inverter
mode to obtain wider generation range. When the output voltages of the PV arrays are higher, the
proposed inverter is transformed into equivalent H-bridge inverter mode to reduce the total loss.
Thus, wider generation range and higher efficiency are both implemented. Specific demonstration of
the proposed inverter based on five-level cascaded inverter is presented. The detailed experimental
results verify the accuracy and feasibility of the theoretical analysis and the proposed inverter
topology.
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5. CONTACT
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6. ADDRESS
#23A, 2nd Floor SKS Complex,
Bus Stand Opp. Karur-639 001.
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7. Course
Embedded System,
PLC,
MATLAB,
Hardware & Networking.
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