Small Rooftop Solar Power Plant Calculation

Rooftop solar is increasingly cost-effective for home owners, business owners, and their communities. Reductions in technology prices, innovative financing, and growing networks of solar installers and financial partners all helped drive down the prices for household systems in India. 

 The falling price of rooftop PV systems results from improvements in the technology and economies of scale among manufacturers. 

Many home owners and businesses are taking advantage of third-party ownership options. Under solar leases or power purchase agreements, electricity customers typically pay little or nothing up front for rooftop systems, then get electricity from the systems over a long period. The falling prices and innovative financing structures mean that rooftop solar is more broadly available, and that the pool of customers comes from increasingly diverse economic backgrounds.

How to design of your rooftop power plant?

Step – 1
Load Calculate
Application
Load (Watt)
No
Hours of Use
Wh/Day















Total Application Load(Lw)=


H=

Total Load in Wh/Day (EL)=

Total Load in KWh/Day =


Step – 2
SIZING AND CHOICE OF ELECTRONIC COMPONENTS:
Once the load assessment process is complete, the next step is to choose suitable electronics for the PV system namely the Inverter and Charge controller.  The capacity of these components depends on the voltage and current of the loads.

ESTIMATION OF REQUIRED INPUT ENERGY TO THE INVERTER:
calculate the input energy that must be fed to the inverter to get sufficient output energy to meet the demand of load.  

Step 3:
DETERMINING THE SIZE OF BATTERY BANK:
BATTERY PARAMETERS & BATTERY SIZING:
In order to find out the size of the battery, we have to consider the following parameters of batteries.
•          System Voltage and Ampere-hour capacity of the battery
•          Depth of Discharge (DoD)
•          No. of days of autonomy

ESTIMATING AMPERE-HOUR CAPACITY OF THE BATTERY:
The most common measure of battery capacity is Ah, defined as the number of hours for which a battery can provide a current equal to the discharge rate at the nominal voltage of the battery. Ah capacity of the battery can be calculated by dividing the energy input to the inverter (Output energy from battery) by System voltage.

ESTIMATION OF REQUIRED INPUT ENERGY TO THE BATTERY:
In practice, the battery efficiency may not be 100% and hence the entire energy supplied by the PV module may not be obtained from the output of battery bank. 

PV Array Design
Say, this system will be install at Jaisalmer, Rajasthan (Latitude:26.9157487, Longitude:70.9083443)
Average Radiation kWh/m2/day: 5.89, Max in May: 7.52, Min in December: 3.97 kWh/m2/day
Max, Min and Average Temperature(°C/°F): 43, 30, 38 in May Month

Required PV Array Power (Application required)=  

(TotalLoadinKWH/day)/(System’s efficiency factor X AverageSolarIrradiation)   X   PSI

Now make array as per inverter Specification
Operating Voltage Maximum Voltage and Minimum Voltage Range, check temperature co-efficient factor, MPPT Voltage range, Charging Current. It may be required to make trial and error method, change inverter VA for best suit.  

                                          For More http://www.istindia.org/

Popular posts from this blog

Solar energy consulting & management services, detailed project report, energy management consultants, 1 Kw Rooftop Solar System should be for every house

1kw solar power plant specification

MANPOWER REQUIREMENTS FOR SOLAR PV DEVELOPMENT

Industrial Vocational Training for Engineering Students

বিপর্যয় এড়াতে ভূগর্ভের জলস্তর রক্ষা করার ডাক

Solar Energy Industry in India & Its Future Prospects

NIESBUD Entrepreneurship Development Program on Solar Energy

Sustainable Community Development

IST-Magazine India Sets Year-on-Year Targets to Reach Ambitious 2022 Solar Goal

IST-Magazine Solar Energy Applications for Agriculture in India

Labels

Show more