Electronics Projects, 100Watt PV Panel Converter Atmega8 100W DC to AC ICL7667 ETD34 article
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The use of solar energy will be the topic for a long time an active electronic circuit is used a lot in this business at one of these inverter dc to ac converters. Ac dc voltage from PV module circuit (240Vac) is turning 100 watts of power system voltage control provided by Atmel ATmega8. ATmega to drive MOSFETs in the output ICL7667 (Dual-Power MOSFET Driver) The transformer used etd34
All details about the circuit formula’s calculations also pcb circuit diagrams and drawings given ATMega8 software.
Most excellent of all the floors of the circuit given in separate schemas (PV current, voltage sensing, drivers, etc..) You can use this circuit for different applications or projects can be useful in the calculations.
100W Solar Panel Inverter
The Inverter Module is designed to connect a 100W PV panel directly to the 240V AC grid. The module consists of a DC-DC boost converter and a DC-AC inverter. The design focus was to totally isolate the DC-DC converter from the DC-AC inverter. The only coupling between the two sides is the DC bus voltage. The AC side regulates the 350V bus by adjusting the average alternating current output from the module. The DC side adjusts the input terminal voltage, to track the Maximum Power Point of the PV panel.
The focus of this thesis was the development of the Half Bridge Dual DC-DC converter stage. As most power loss occurs in the DC boost stage, efficiency was a major design issue. Efficiencies around 95% were aimed for. A micro-controller is used for controlling the converter, and ensuring that maximum power is transferred from the PV panel to the DC bus capacitor. This required the development of a Maximum Power Point Tracking algorithm.
The resulting prototype tracks the maximum power point of the PV panel, and transfers maximum power to the 350V bus with efficiencies above 90%. The major sources of power loss are transformer and inductor core and copper losses, and MOSFET switching and conduction losses. Efficiency was improved by focusing on these areas.
soruce: http://innovexpo.itee.uq.edu.au/2003/exhibits/s363167/ 100Watt PV Panel Converter Atmega8 100W DC to AC ICL7667 ETD34 alternative link: 100watt-pv-panel-converter-atmega8-100w-dc-to-ac-icl7667-etd34.rar alternative link2 alternative link3