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Copyright 2006 - Unistring Tech Solutions Pvt. Ltd., INDIA

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Solar & EPC
IP & Ref. design menu
Design & Deployment
ISO certified company
UTS's Solar division provides alternative forms of renewable energy by providing services ranging from solar inverter design and production to Engineering, procurement and Constructions of solar power plants.

Our strength in design of embedded systems and power electronics is one of the biggest asset to provide customizable solutions.
UTS being ISO 9001:2008 certified company, follows standard procedures in solar plants construction and maintainance.
Contact UTS solar division for more details.
UTS - Solar Products & Services
Unifying Software & Hardware
We take design, engineering and installation of roof top power plants based upon on grid and off grid technologies.
These systems will operate as standalone and grid operated systems. These systems will serve the segregated total load on the inverter by sharing it with the grid and batteries.
In these systems the following are the major BOM.
1. PV Modules
2. PCU / Grid Sharing Inverter
3. Batteries
The PV modules convert the light reaching them into DC power. The amount of power they produce is roughly proportional to the intensity and the angle of the light reaching them. They are therefore required to be positioned to take maximum advantage of available sunlight within sitting constraints. As per the present available technology with ease an efficiency Crystalline Silicon technology modules are preferred.
This are configured in parallel or series according to the inverter solar charger input voltage and current ratings and also depends on the capacity of the plant.
The Solar PCU (power conditioning Unit) is the heart of any solar power system and its main function is to convert direct current (DC) to alternating current (AC).
This machine makes the use of sunlight with which the batteries can generate and store electricity for later uses. A Solar off Grid Inverter can convert Direct Current (DC) energy from the batteries to Alternating Current (AC) which can power the electric appliances.

Working:
When solar energy is sufficient then output of MPPT charger is given both to batteries & inverter, the output of inverter will give AC voltage to load.
When solar energy is weak then inverter is taking the possible DC source from solar in combination with batteries.
If batteries have low a voltage condition then load is shifted to mains grid & batteries are charging on solar output.
Once batteries are fully charged then load is automatically shifted to inverter & inverter is operating on solar & batteries.
The main function of the grid sharing inverter is to convert the direct current DC from solar panels to alternating current (AC).
Working:
It works without any changeover.
During availability of the mains power the total load is shared between the mains and solar parallely charge the batteries.
During non availability of the Mains power the load will be served by the solar and batteries.
During Night the load will be served by the mains power.

These systems will operate in parallel with the main power supply by serving the total load and excess generated solar power will be pumped in to the grid.
For installing this type of systems on our rooftops we need to get the permission from the local DISCOM.

1. Netmeter application along with 1000 rupees DD as to be submitted to the local DISCOM.
2. DE will inspect the site and issue the technical feasibility report within 15 days. This report will have validity for six months.
3. Within the six months of time the system has to be installed.
4. We need to pay the amount for getting the netmeter to the DISCOM.
5. After completion of installation we need to approach the DISCOM with PPA on stamp paper along with the work completion report in the DISCOM prescribed format.
6. DE will come for the inspection and install the netmeter by removing the existing normal meter only if the installed system is operating as that mentioned in the DISCOM guidelines.
7. After installing the netmeter DE will forward the information to the ERO for making the netmeter billing.
The total above process along with the installation will be done by us on the customer request.
In these systems the following are the major BOM.
1. PV Modules
2. Grid tie Inverter
3. ACDC Distribution box
4. Net meter
The PV modules convert the light reaching them into DC power. The amount of power they produce is roughly proportional to the intensity and the angle of the light reaching them. They are therefore required to be positioned to take maximum advantage of available sunlight within sitting constraints. As per the present available technology with ease an efficiency Crystalline Silicon technology modules are preferred.
This are configured in parallel or series according to the inverter solar charger input voltage and current ratings and also depends on the capacity of the plant.
The power processing circuits of a grid tie inverters are similar to that of the conventional DC to AC Converter that operates as a stand-alone device. These inverters take a variable DC supply from solar panels as input and invert it to AC supply as output in synchronization with the mains supply. It can provide power to your load and feed an excess of the electricity into the grid. During night it will be going into the sleep mode and in the morning it will automatically starts the power generation as the sun light is available. This system doesn’t require any maintenance as these are battery less systems.
This box contains the protection equipment required for the solar panels, inverter and the mains supply (during service on the grid).
This meter will record the power consumed from grid and also power feed in to the grid by us. This meter will be installed by the local DISCOM people. Based on the meter readings payments will be done to us by the DISCOM only if power pumped into the grid is more than the power consumed by us and vice versa the case if power consumed is more than the power pumped in to the grid.
A solar-powered pump is a pump running on electricity generated by photovoltaic panels by utilizing energy available from sunlight as opposed to grid electricity or diesel run water pumps. The operation of solar powered pumps is more economical mainly due to the lower operation and maintenance costs and has less environmental impact than pumps powered by an internal combustion engine. Solar powered water pumps can deliver drinking water as well as water for livestock or irrigation purposes.
Applicable for all types of Bores, Ponds, wells etc.
Maintenance free, low DC/AC branded pumps fit and forgets.
Available in both type surface and submersible.
No any running cost, freedom from electricity bills.
Complete mounting structure.
It can be installed in any remote locations.
Properly designed AC drives for running the AC pumps.
Subsidy from MNRE and any other state (India) nodal agency is available.
We provide the reliable, efficient and economic solar water pumping solutions which can meet exact requirements of the customer. Here we also provide the bank loans for installing the systems according to the financial status of the customer based on their request.
The following diagram gives the architecture of 20 KW strings. 5 strings are given in the picture. This architecture will be repeated to realize 100 KW to 500 KW capacity  plants. However the plant architecture may change depending in the site / Substation  capacity and the requirements of the client. It is an economical alternative to Diesel generators
ON & OFF GRID SOLAR ROOFTOP SYSTEMS
OFF GRID SOLAR SYSTEMS WITH BATTERY
PV MODULES:
SOLAR PCU INVERTER
SOLAR GRID SHARING INVERTER
ON GRID SOLAR SYSTEMS WITH NETMETERING
Process for getting the permissions from the local DISCOM
PV MODULES
GRID TIE INVERTER
ACDC DISTRIBUTION BOX
NETMETER
SOLAR WATER PUMPING SYSTEMS
FEATURES & BENEFITS
ON GRID ROOF TOP SOLAR POWER PLANT ARCHITECTURE
Frequently Asked Questions
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