Concept of Solar Water Pumps that is to save energy and to make use of renewable sources of energy to full extent.

1. Harshit Chauhan
Solar Pump

2. A solar water pump has a mini power house at its heart and consists of a
calibrated and matching solar array of modules – tuned with the equivalent
power of pump for that particular application. The solar water pumping system is
capable of running all types of electrical water pumps with applications varying
from irrigation to household demands. Irrigation pumps such as submersible,
surface or deep well can also be coupled with drip irrigation systems to enhance
the returns from this configuration.
Solar Water Pump

3. A typical solar water pumping system is known by the sum total of solar array size
that is required to run the attached pump. A 1000 Wp solar water pump is capable
of drawing and pumping approximately 40,000 litres of water per day from a
source that is up to 10 meters deep. This is sufficient to irrigate about 2 acres of
land with regular crops. A 1000 Wp solar water pump helps save up to Rs 45,000
when compared to equivalent use of a diesel-operated pump over a year.
Contd...

4. Process of Solar Water Pump

5. 1 Each solar array has a number of solar modules connected
in parallel or series. Every solar PV panel generates current
by converting solar radiation to electrical energy.
2 The electrical energy from the entire array is controlled,
tuned and directed by the inbuilt controller in DC pumps or
through the Variable Frequency Driver(VFD) and enables the
connected pump (may be submersible or surface) to draw
water and feed the delivery pipelines.
3 The water thus drawn from ponds, rivers, bore wells or other
sources by a solar water pump is pumped to supply water as
required. It can be stored in tanks from where it is later
channelled to fields or the supply from the pump may be
coupled with drip irrigation systems to provide optimised
Process Contd...

6. Solar powered water pumps can deliver drinking water as well as water for
livestock or irrigation purposes. Solar water pumps may be especially useful in
small scale or community based irrigation, as large scale irrigation requires large
volumes of water that in turn require a large solar PV array. As the water may only
be required during some parts of the year, a large PV array would provide excess
energy that is not necessarily required, thus making the system inefficient.
Role of PV array

7. Solar PV water pumping systems are used for irrigation and drinking
water in India. The majority of the pumps are fitted with a 200 watt -
3,000 watt motor that receives energy from a 1,800 Wp PV array. The
larger systems can deliver about 140,000 liters of water/day from a
total head of 10 meters. By 30 September 2006, a total of 7,068 solar
PV water pumping systems have been installed
Application

8. A Solar Photovoltaic (SPV) Water Pumping System consists of:
PV Array :
Capacity in the range of 200 Wp to 10 KWp. These ranges of Solar Photovoltaic (SPV) Water Pumping
Systems are basically for “Irrigation” applications. However, these may also be used for “Drinking
Water Applications wherever such capacities are required”.
PV Array should be mounted on a suitable structure with a provision of tracking the sun.
Motor Pump Set (Surface or submersible) :
- D.C. Motor Pump Set (with Brushes or Brush less D.C.)
OR
- A.C. Induction Motor Pump Set with a suitable Inverter
Electronics :
- Maximum Power Point Tracker (MPPT)
Inverter for A.C. Motors (Appropriate Electronic Controller in case of B.L.D.C.)
- Electronic Protections.
Interconnect Cables and
“On-Off” switch.
More about PV Array

9. Solar PV Water Pumps with PV module capacity in the range of 900 Watt to 5
KWp may be installed on a
suitable bore-well / open well / Water Reservoir / Water stream etc.
Under the “Average Daily Solar Radiation” condition of 7.15 KWh / sq.m. on the
surface of PV array (i.e.coplanar with the PV Modules), the minimum water
output from a Solar PV Water Pumping System.
PERFORMANCE SPECIFICATIONS
AND REQUIREMENTS

10. SPECIFICATIONS
Description DSSPL-SP1 DSSPL-SP2
DSSPL-
SP3
DSSPL-SP4
PV array
1200 Wp 1800 Wp 3000 Wp 4800 Wp
Motor pump set type
Submersible wi
th Electronic
Controller
Submersible
with
Electronic
Controller
Submersibl
e with
Electronic
Controller
Submersible wit
h Electronic
Controller
Max. total dynamic
head
60 Metres 60Metres 85Metres 105 Metres
Module mounting
structure
MS hot dipped
galvanised,
three times
manual tracking
facilities
MS hot
dipped
galvanised,
three times
manual
tracking
facilities
MS hot
dipped
galvanised,
three times
manual
tracking
facilities
MS hot dipped
galvanised,
three times
manual tracking
facilities
Water Output*
62,000 Litres
per day from a
total head of 30
mtrs
83,000 Litres
per day from
a total head
of 30 mtrs
83,000
Litres per
day from a
total head
of 30 mtrs
1,30,000 Litres
per day from a
total head of 30
mtrs
Description DSSPL-MD1 DSSPL-MD2 DSSPL-MD3
PV array 900 Wp 1800 Wp 2700 Wp
Motor capacity 1 HP 2 HP 3 HP
Shut Off Dynamic
Head
12 metres 15 metres 25 metres
Module mounting
structure
MS hot dipped
galvanised, at
least three times
manual tracking
facilities
MS hot dipped
galvanised, at
least three times
manual tracking
facilities
MS hot dipped
galvanised, at
least three times
manual tracking
facilities
Water Output*
81,000 litres per
day from a total
head of 10 metres
162,000 litres per
day from a total
head of 10
metres
135,000 litres per
day from a total
head of 20
metres
TECHNICAL SPECIFICATION SOLAR WATER PUMP
Indicative Technical Specifications of Shallow Well (Surface) Solar Pumping Systems With A.C. Induction Motor Pump Set and a suitable Inverter:
*. Water output figures are on a clear sunny day with three times tracking of SPV panel when solar radiation on horizontal surface is: 5.5

11. Thank You