Solar DC / AC Pumping System

Solar water pumps are stand-alone systems. A solar pump uses power derived from sunlight that is converted into electrical power (DC) by Solar Photo Voltaic (SPV) modules, DC power which is fed to the pump inverter is converted to AC power for AC Solar Water Pumps.

This AC power will drive the centrifugal mono-block / submersible pumps set for lifting water from bore wells, open wells or reservoirs which give higher power output in the afternoons and lower power output in the mornings and evenings.

As a result, a solar pump works on varying power input and gives varying water output at a given pump head. The system is fitted with auto start and stop with no user intervention.

Working of a solar water pumping system

The system operates on power generated using solar PV (photovoltaic) system. The photovoltaic array converts the solar energy into electricity, which is used for running the motor pump set. The pumping system draws water from the open well, bore well, stream, pond, canal etc. The system requires a shadow-free area for installation of the Solar panel.

A system with 1800 watt PV array capacity and 2 HP pump can give a water discharge of 1.4 lakh litres per day from a depth of 6 to 7 meters. This quantity of water is considered adequate for irrigating about 5-8 acres of land holding for several crops.

1 HP to 10 HP Solar Water Pumps

These pumps mostly uses by farmers for irrigation of farming land and horticulture farms. Solar pump can be use for fountain, swimming pool pump, water circulation pump, mono-block home pump and other similar applications.

Major components of Solar Pump

Solar Modules: They are the main component of a Solar Pumping System (and really any type of Solar Energy System), as this is where the sunlight is absorbed, and the energy is converted into DC electrical power.
Solar Modules Mounts/Racks and Solar Trackers: Solar modules need all the stability they can get, especially if it’s particularly windy in your local region. By having module mounts or racks, you won’t have to worry about your modules becoming damaged. Solar trackers are also important, as they can help move or tilt a module to get the most of the morning and afternoon sunlight.
Charge Controller: Controller controls the system.
Motor pump to lift the water.

Types of Solar Pumps
There are many types of solar pump, but only two types are most successful. One is submersible solar pump and another is surface pump. Both pump come in DC and AC technology.

Solar Submersible Pumps: Where the depth of water level is more than 15 meter, submersible pump is recommended. This pump keeps inside the water and lift it out. Solar submersible pump is the most selling pump in India as the depth of water level is very low in maximum areas.
Solar Surface Pumps: If the depth of water is less than 15 meter and you want to lift to ground or above the ground level, Solar surface is recommended.
Hybrid Solar Water Pumps: In hybrid solar pump, there are three power options to run solar pump. First is solar power, second is electricity grid and the third is solar battery. In day time your water pump is powered by solar electricity, in nights it is powered by grid and when both (solar power and grid) is not available then it will powered by battery.
On-Grid Solar Water Pumps: In on grid solar system, your water pump will be powered by solar panel. In case when the solar panel is generating more power than water pump’s consumption, then the excess power will automatically exported to grid via net-metering and government will also adjust it in your next bill.

Advantages of a solar water pumping system

⦁ No fuel cost - as it uses available free sun light.
⦁ No electricity required.
⦁ Long operating life.
⦁ Highly reliable and durable.
⦁ Easy to operate and maintain.
⦁ Eco-friendly.