Pv System 1

PV system: Literature Review: PV modules generate electricity, but the electrical output is only one component of the total energy produced by photovoltaic array. A typical photovoltaic (PV) module has ideal conversion efficiency in the range of 15%. The remaining energy produced is heat, which is neither captured nor utilized. This heat increases the operating temperature of the PVmodules, which actually decreases their overall performance. The cell output is highest when the sunbeams fall perpendicular on the solar cell. The light energy that falls on a surface over a period of time is called insolation. Typical mean daily insolations in developing countries are 4.5.5 kWh/m2.

Load:

10KW Solar system design load Name of electrical load Light Computer Printer

Specification Energy-saving lamps LCD laser

Power

Qty

Working hour

Power consumption

10W

4

6

240Wh

300W 250W

1 1

6 6

1800Wh 1500Wh

Fan X-ray Machine Total

120W 1 3.5KW 1 680W 10KW Solar System Configuration Total capacity Mode Capacity 6720WP PMS210W 210W 400AH/220V GP200 200/12V

6 6

900Wh 21Wh 4440Wh

Product name Qty Solar panel 32 Battery 32 Charing 40A/220V PC802220 8000W/220V 1 Controller Inverter 10KW PN103220D 10000W/220V 1 Table: this shows the calculations according to the requirement. The amount of solar energy is so huge that in one year it is about twice as much as will ever be obtained from all of the earth's non-renewable resources of coal, oil and natural gas. Pakistan lies in an area of the highest solar insolation in the world. The mean global irradiation falling on a horizontal surface in Pakistan is about 200-250 watts per square meter of area in a day with almost all parts of the country having more than 300 sunshine days in a year. The vast potential can be exploited to produce electricity which can be provided to off-grid communities in the northern hilly areas and the southern and western deserts. The provinces of Sindh and Baluchistan and the Thar desert are especially suited for the utilization of solar energy.

Maximum power at STCPmax 50W Optimum operating voltageVmp 17.2V Optimum operating currentImp 2.91A Open-circuit voltageVoc 21.6V Short-circuit currentIsc 3.23A Short-circuit current temperature coefficient 0.065±0.015%/ Open-circuit voltage temperature coefficient -80±10mV/ Peak power temperature coefficient -0.5±0.05%/ NOCT (Air 20; Sun 0.8kW/m wind 1m/s) 47±2 Operating temperature -40 to 85 Maximum system voltage 600V DC Power tolerance ±3%