How to Install a Small Solar Pumping System? In this article, we're going to show you the principle of a solar pumping system and the specific products you may need to install this system.That is Solar Pumping System Installation Guide.

Solar pumping system is a system that converts solar energy into electricity and drive pump for water supply.

System Features

1.The photovoltaic power generation system operates fully without manual duty.It is composed of solar panels,solar pump inverter and water pump.

It can eliminate the need of energy storage devices such as batteries, without water storage, and directly driving the pump to pump water.A high reliability and greatly reduced system construction and maintenance costs.

2.Using KEWO new energy solar pump controller, the pumping speed is adjusted according to the change of dailies intensity, So that the output powers is close to the maximum powers of the solar arrays; when the sunshine is very full, the pumping speed is guaranteed not to exceed the rated speed; when the sunshine is insufficient, according to the lowest set operating frequency, Otherwise the pumped will automatically stop running.

3. The pump is driven by a three-phase AC motor, pumping water from a deep well, injecting it into a reservoir/pool, or directly into the irrigation system. Different types of pumps can be used to work according to actual system requirements and installation conditions.

4.It can provide a economical and more effective solutions according to different regions and customers needs.

System construction

The solar photovoltaic pumped systems is mainly composed of three parts: solar cell module, PV pump inverter and three-phase AC pump.

The solar cell array is composed of a plurality of solar cell modules connected in series and in parallel, which absorbed sunshine radiations and converts it into electrical energy to provide power for the whole system.

Solar pump inverter/controller controls and regulates the operation of the system, converts the DC power generated by the solar cell array into AC power, drives the water pump, and adjusts the output frequency in real time according to the change of the sunshine intensity to achieve maximum power point tracking and maximizes the use of solar energy.

The pump is driven by a three-phase AC motor, pumping water from a deep well, injecting it into a reservoir/pool or directly into the irrigation system.

According to the actual system requirements and installation conditions, different types of pump can be used for operation. The powering of the systems ranges from 0.75KW to higher, the water lifting stroked can be 10 meters or higher, and the daily water lift capacity can be more than 5 tons.

A small solar pumping irrigation system installation guide. Take 380V 22KW AC pump for example:

First, select solar pump inverter model.  PV800-4T22G, Accept 350VDC to 800VDC input, or 380V/440VAC input; Oupput 0-380VAC, 22KW, 45A.

Second, solar arrays instalation. Vmp, and power selection.

If your solar panel specification is: 300W, vmp36VDC, then how to do?

A: The power of solar arrays should be more than 1.3 times of rated power of pumps. To get enough power for the system we need the quantity of solar panels are (22KW*1.3)/300W≈96pieces    

B: Get enough Vmp from solar panel for starting inverter. Since the inverter need to gerenteen enough 380VAC output, so the input voltage should be 380VAC*√2≈532VDC.

C: We need to consider how to connect the panel. The input voltage is 532VDC, and the vmp of a solar panel is 36VDC, so we can only have 532VDC/36VDC≈15pieces panel connection in series. Total 96pieces/15pieces≈7group in parallel.