Solar Pumping AC System

Introduction of Solar Pumping AC System:

Growatts Power solar pumping system consists of solar pumping inverter, pump and PV array.

Consider that storing water is more efficient than storing electricity, the system is designed to

directly drive the pump without battery which can reduce the construction and operating cost

and routine maintenance effectively.

The PV array consists of multiple solar panels connected in series/parallel, which can supply the

whole system as power source by converting the absorbed solar radiation energy to the

electrical energy.

Solar pumping inverter can implement the control of the whole system operation, which drives

the pump by converting DC power produced by the PV array to AC power. This inverter can

adjust the output frequency according to the solar irradiation intensity in real time to

implement the MPPT(maximum power point tracking).

The pump driven by a 3-phase AC motor draws water from deep-well or river. The pumped

water is then fed into reservoir or water tank, or connected to the irrigation system or fountain

system directly. All of centrifugal pump, axial-flow pump, mixed flow pump and deep well

pump can be utilized.

Solar Pumping System Optimization of Single Pump System

A single pump system denotes that only a pump and the matched PV array and a solar pumping

inverter are configured in the system. The goal of system optimization is to reduce the number

of PV modules to be utilized as could as possible while meeting the requirements of water head

and consumption. The pump rotational speed can be regulated according to the variation of

solar irradiation.

When the solar radiation intensity reaches the peak the pump runs at its rated speed, and the

output power is close to the maximum power of PV array; when the solar radiation intensity is

relatively weak, the pump runs with the low speed based on the MPPT algorithm; when the

pump speed is so low that no water flow can be available, the system stops working.

Therefore, the solar pumping system is actually different from traditional pumping system, for

which the system configuration needs to be optimized according to the requirements of water

head, implement the MPPT(maximum power point tracking).

The pump driven by a 3-phase AC motor draws water from deep-well or river. The pumped

water is then fed into reservoir or water tank, or connected to the irrigation system or fountain

system directly. All of centrifugal pump, axial-flow pump, mixed-flow pump and deep-well

pump can be utilized.

Daily water consumption, and the local solar radiation levels.

Determining optimal average daily working time and range of pump speed.

Selecting optimal water head and rated power of pump;

Determining maximum power of PV array, recommended operating voltage and

connection mode.

Feature of Solar Pumping Inverter

Compatible with 3-phase Induction Motor.

Adopting the proposed dynamic VI maximum power point tracking(MPPT) control

method; Fast response speed and stable operation; Better than the conventional

methods which may lead to the problems including poor tracking performance, unstable

operation or even damaging water hammer effects when the irradiation on the array

change rapidly.

Digital control with full automatic running, data storage and complete protective

functions(overload, overvoltage, under volage, over heat, everse polarity, thunder, over

flow and dry running, short-circuit).

The main circuit adopts Intelligent Power Module(IPM), with high reliability and high

efficiency 98%.

Unique design of cold rolling steel shell with good cooling and shielding, LCD

display(43*29mm) and keys, easy operation, good view through LCD when seting

parameter, feel comfortable.

Protection degree IP55, working temperature: -10 C to 50 C.

Solar pump inverter can connects to city power when there is no sunshine to keep

system pumping water(this function is optional).

Solar pump inverter can be built-in GPRS receiving module(optional). You can operate

this inverter remotely though your PC or mobile phone with our provided website, user

name and password.

Low voltage drive device is our patent right product , can be used in small solar pumping

system to save the quantity of solar panels.

Soft start and variable-frequency function.

Applications

Agriculture irrigation for large field of corps, vegetable or fruit.

Forestry irrigation for trees

Irrigation for desert plant(desert control)

Irrigation for garden and park

Irrigation for greenhouse vegetable or flowers

Fish pond water level maintenance aeration

Swimming pool circulation & filtration pumps

Surface water pumping for landscaping streams and waterfalls in tourist sites

Supply water for pasture animal husbandry

Supply water for islands

Supply water to remote village for home use

Pumping water in wastewater treatment engineering

Specifications:

Model

Motor Power

HP

Input DC Voltage

V

Mppt Vol. V

Rated power

W

O/P Freq.

O/P Vol.

AC

Pv Module Watts

GT-3700H 3 HP 450-750

480-600 3700 0~50/60 380V 3300

GT-5500H 5 HP 450-750

480-600 5500 0~50/60 380V 5500

GT-7500H 7.5 HP 450-750

480-600 7500 0~50/60 380V 8250

GT-10KH 10 HP 450-750

480-600 11000 0~50/60 380V 11250

GT-15KH 15 HP 450-750

480-600 15000 0~50/60 380V 16500

GT-20KH 20 HP 450-750

480-600 18000 0~50/60 380V 22500