MNRE specification for solar charge controller:-

About MNRE:- MNRE (Ministry of New & Renewable Energy) is an organization of Government of India which is promote various type renewable energy sources.In other words we can say that the MNRE is a ministry of the Government of India that is mainly responsible for research and development, intellectual property protection, and international cooperation, promotion, and coordination in renewable energy sources such as wind power, small hydro, bio gas, and solar power.

    MNRE established under the central ministry of Indian Government in 1992, the main objective to establish of this organization to promote and install various type renewable energy resources. MNRE also dealt the various types, research and development programme in the renewable energy sector. 

    These are various subsidiary agencies of MNRE and each Subsidiaries agencies has the specific role in particular field the list of the subsidiaries mentioned below.

1. National Institute of Solar Energy (NISE)
2. National Institute of Wind Energy (NIWE)
3. Sardar Swaran Singh National Institute of Renewable Energy (SSSNIRE)
4. The Indian Renewable Energy Development Agency (IREDA)
5. Solar Energy Corporation of India (SECI)
6. Association of Renewable energy agencies of state (AREAS) 

1. National Institute of Solar Energy (NISE):- National Institute of Solar Energy, an autonomous institution of Ministry of New and Renewable (MNRE), is the apex institute for research and development in the field Solar Energy. The Government of India converted 25-year-old Solar Energy Centre (SEC) to an autonomous institution in September 2013 to assist the MNRE in implementing the National Solar Mission and coordinate in research, technology, and other related works.

    The National Solar Mission (NSM) is an initiative of the Government of India and State Governments to promote solar power. This mission is also known as Pandit Jawaharlal Nehru National Solar Mission (PJNNSM) This mission inaugurated by Former Prime Minister Dr. Man Mohan Singh in 2010 with the target of 20 GW Renewable Power Generation.by 2022. This target latter increased By Narendra Modi Government in 2015 with the target of 100 GW by 2022. This total programme comes under Ministry of New And Renewable Energy (MNRE) Government of India.

☞    Click here for more information regards National Solar Mission 

    In this context i want to tell you India is a leading country of solar energy on the global level. The International Solar Alliance is the first international organization hosted in India, with its headquarters situated in Gurugram, in the outskirts of New Delhi. 

2. National Institute of Wind Energy (NIWE):-National Institute of Wind Energy (NIWE) established in Chennai in 1998 by the Ministry of New and Renewable Energy (MNRE), Government of India is an autonomous research and development institution. It is a knowledge-based institution of high quality and dedication, offers services and seeks to find complete solutions for the kinds of difficulties and improvements in the entire spectrum of the wind energy sector by carrying out further research.

3.Sardar Swaran Singh National Institute of Renewable Energy (SSSNIRE):-Sardar Swaran Singh National Institute of Renewable Energy (SSS-NIRE), Kapurthala (Punjab) is an autonomous Institution of the Ministry of New and Renewable Energy. Govt. of India. The aim of the Institute is to carry out and facilitate research, design, development, testing, standardization & technology demonstration. It will eventually lead to commercialization of R&D output with a focus on bio energy, bio-fuels & synthetic fuels in solid, liquid & gaseous forms for transportation, portable & stationary applications, development of hybrid / integrated energy systems.

4. Indian Renewable Energy Development Agency (IREDA):-Indian Renewable Energy Development Agency Limited (IREDA) is a Mini Ratna (Category–I) non-banking financial institution under the administrative control of Ministry of New and Renewable Energy (MNRE). IREDA is primarily engaged in promoting, developing and extending financial assistance for setting up projects relating to new and renewable sources of energy and energy efficiency/conservation with the motto 'ENERGY FOR EVER'. IREDA is the single largest “Green Financier” in the country. It caters to all technologies of the RE sector and predominantly provides financing for sector.

5. Solar Energy Corporation of India (SECI):-Indian Renewable Energy Development Agency Limited (IREDA) is a Mini Ratna (Category–I) non-banking financial institution under the administrative control of Ministry of New and Renewable Energy (MNRE). IREDA is primarily engaged in promoting, developing and extending financial assistance for setting up projects relating to new and renewable sources of energy and energy efficiency/conservation with the motto 'ENERGY FOR EVER'. IREDA is the single largest “Green Financier” in the country. It caters to all technologies of the RE sector and predominantly provides financing for sector.

6. Association of Renewable energy agencies of state (AREAS) :-

Ministry of New & Renewable Energy (MNRE) is the nodal agency at the central level for promotion of grid-connected and off-grid renewable energy in the country. Ministry’s programmes are implemented in close coordination with State Nodal Agencies (SNAs) for renewable energy (RE). Over the period the SNAs have developed considerable knowledge and experience in planning and implementation of RE programmes. In this background it is important that SNAs interact and learn from each other’s experiences and also share their best practices and knowledge regarding technologies and schemes/programmes.

    ☞  Click here for view List State Nodal Agencies

Specification of Solar Charge Controller as Per MNRE Standers :- 

Solar Charge Controller:- Charge controller is an electronic device that control flow of charge from the battery and to the battery.They protect the battery by preventing over charge and deep discharge of the batteries to preserve there life and performance. when the the battery get over charge from the solar photovoltaic module,then a solar charge controller will cut it off from the circuit so that the more charging is not possible . similarly if battery goes into deep discharge (or overcharge) due to excessive use of batteries by the load a charge controller detects and disconnects the battery from the circuit so that no current can be drawn from the battery.In this way a solar charge controller protect the batteries.Note that over charge and deep discharge damage the battery condition.

        The fallowing two types of charge controllers are mostly used now days.

1. Pulse With Modulation (PWM) charge controller or Standered charge controller.
2. Maximum Power point tracker (MPPT) charge controller.

        ✔️   PWM charge controllers have same nominal voltage across battery bank and solar PV array 

       ✔️ MPPT charge controllers can have different voltages across the battery bank and solar PV array and operate at the maximum power point tracking (MPPT) of the PV panel. MPPT charge controller allow us to have a solar panel array with a much higher voltage than your battery bank voltage.

Specification of a solar Charge Controller as per MNRE / NISE Tender Docs :- 

    The specification of solar charge controller is depends on the utility load. I would like to tell you that if there is a government organization and wants to install solar system, then it has to go through a very long process, which is given below. First he will apply online by visiting on the portal of a government institution.After this, the government institution will send all the application forms to its higher institution, which works on same field. These institutions may be the nodal agency of the state government or subsidiary MNRE an organization of central government. After this, these higher organizations collect all the application form and release a tenders. In which large number of solar industry companies participate. And in this tender document, specification of all electrical and mechanical parameters is given. And all companies have must be to meet those parameters which is mentioned on tender documents.

    Here few tender document of off grid with battery storage system is attached you can see the specification of solar charge controller. 

☞     Click Here For view APDCL off grid tender document

☞  Click Here For view UPNEDA off grid tender document

 

v  PCU/ INVERTER

The power conditioner unit/ central inverter should be provided to convert DC power produced by SPV modules, in to AC power. The power conditioning unit/inverter should be Off-Grid type. Typical technical features of the inverter shall be as follows:

Power conditioning unit with inbuilt charge controller of capacity & ratings as specified in the below for various capacity of Solar Power Plants should convert DC power in to AC power, must confirm to standards IEC 61683.

v  The PCU will have the following features:

ü  MOSFET / IGBT based MPPT charging

ü  Wide input voltage range

ü  Output voltage 230 V+ 2% of modified/ pure sine wave for single phase PCU & 440 V + 2%. for three phase PCU

ü  Output frequency: 50 Hz+0.5 Hz

ü  Capacity of PCU/ Inverter is specified at 0.8 lagging power factor

ü  THD: less than 3%

ü  Efficiency: >85% for 5 KW &> 90 % for 10 KW capacity of PCU at full load

ü  Ambient Temp 50 degree Celsius (max.)

ü  Operating humidity 95% maximum

v  Protections: -

ü  Over voltage (automatic shut down)

ü  Under voltage (automatic shut down)

ü  Overload

ü  Short circuit (circuit breaker & electronics protection against sustained fault)

ü  Over Temperature

ü  Battery, PV reverse polarity

v  Indicators

ü  Array on

ü  MPPT charger on

ü  Battery connected, charging

ü  Inverter ON

ü  Load on solar/ battery

ü  Grid charger on

ü  Load on Grid

ü  Grid on

v  Display Parameters

ü  Charging current

ü  Charging voltage

ü  Voltage of PV panels

ü  Output voltage

ü  Grid voltage

ü  Inverter loading (kW) & Energy Generation (kWh)

ü  Output frequency

v  Cooling: Air Cooled

v  When battery bank is fully charged, the PCU should have the feature to feed the power generated from solar to load and draw the additional power from main supply to meet the load requirements in the case load is more than solar energy produced.

v  The PCU/ inverters should be tested from the MNRE approved test centres / NABL /BIS accredited testing- calibration laboratories. In case of imported power conditioning units, these should be approved by international test houses

    These all above specification taken from APDCL off grid tender document file and all these specifications are same like UPNEDA tender document file.You can visit on page no 28 on attached pdf file of UPNEDA tender document.

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