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Essay On Shading

1005 Words5 Pages

The power consumption is increasing world wide to meet this demand we are generating power by conventional and non conventional energy sources .In non conventional energy sources PV is mostly used across world to generate the power to meet the power demand across world. Generating power through PV and integrating with the grid. The main drawback for not using PV panel is the efficiency of solar cell is very less and losses in power electronic interface while connecting with the grid. And one more drawback is quality of power due to partial shading. Where solar thermal panel tolerates shading, but PV modules are highly sensitive to shading . To reduce this effect on PV cell bypassing diodes are applied at module levels in many literatures [9] this can increase losses at the module levels only. However, suitable combinations of power electronic converters are essential to get maximum power even under partial shading conditions. Cost study and impact of technical and environmental factors on the total expense and revenue of grid connected PV system are investigated in [1]. The detailed modeling of PV cell is reported in [2]. In paper [3] examination of the voltage characteristics of a distribution system under high-density connection, and suitable voltage regulation method for high-density PV …show more content…

Otherwise it will reduce by small value. However, this algorithm may not work properly or oscillate near the maximum power point (MPP) under sudden atmospheric changes or with the partial shading. The incremental conductance method can track changing irradiance conditions with higher accuracy than P&O.
Incremental conductance Fig 5 incrimental conductance

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