A solar cell panel, solar electric panel, photo-voltaic (PV) module or just solar panel is an assembly of photo-voltaic cells mounted in a framework for installation. Solar panels use sunlight as a source of energy to generate direct current electricity. A collection of PV modules is called a PV panel, and a system of PV panels is called an array. Arrays of a photovoltaic system supply solar electricity to electrical equipment.
A solar pumping system consists of several components. A solar water pump is a vital organ of a solar pumping system. The efficiency of your system depends largely on the performance of the solar pump. An efficient solar pump can help you exploit solar power to its maximum.
What does a solar water pump do?
A solar pump system is an eco-friendly alternative to traditional pump systems. It uses solar power for its operation. It has a motor that utilizes solar electricity to pump water.
Solar pumps are of two types based on the type of motor present in them:
- DC solar pump- does not have an inverter
- AC solar pump- has an inverter that changes solar electricity from DC to AC
How do you choose the best solar pump?
Each solar pump has its own merits and demerits. While a DC solar pump is generally used in low power capacity (around 5kW), one should consider other factors also while choosing a solar pump:
- Efficiency:
A DC solar pump is more efficient as it gives maximum output with fewer solar panels. AC solar pumps need more solar panels as the electricity has to be converted into AC for utilization. As a result, the efficiency of the system is reduced in the latter’s case.
- Noise:
DC pumps are quite silent because of the BLDC motor technology used in their engineering. It helps to reduce mechanical noise significantly. On the other hand, AC solar pumps are rather obsolete and use the old motor technology. It might also cause it to become noisy over time.
- Cost:
A DC solar pump is difficult to maintain. It requires specialized personnel to service it. This scope of limited service and complicated engineering causes a significant increase in its cost. AC solar pumps can be easily handled in case of emergencies.
- Service life:
DC solar pumps have motors with copper coils in them. Copper is seen to be more durable, thereby increasing the life of the pumping system. AC solar pumps, on the other hand, have solar motor coils made up of aluminum, making them prone to deterioration. Consequently, they require service more often as compared to DC pumps.
Assessing the above parameters, we can conclude that a DC pump is a better choice when it comes to efficient solar pumping systems.
Check now: Solar Water Pump (1HP-10HP) Price in India
DC solar pumping system
A DC solar pumping system comprises solar panels, a solar pump controller, and the DC pump. The controller is an integral part of the solar motor pump. It has a display that shows real-time measurements for power, voltage, speed, and current consumption. A controller performs the following functions in a pumping system:
- It starts and stops the pump automatically at a gradual speed.
- It helps to avoid short-circuiting, overheating, and voltage fluctuation.
- It regulates the DC input voltage to attain maximum power point tracking.
These are the functions why a DC pump is considered more efficient in a solar pumping system. You can assess your water requirement and choose a DC pump accordingly.
A solar inverter or PV inverter, is a type of electrical converter which converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical balance of system (BOS)–component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. Solar power inverters have special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.
A solar cable is the interconnection cable used in photovoltaic power generation. Solar cables interconnect solar panels and other electrical components of a photovoltaic system. Solar cables are designed to be UV resistant and weather resistant. They can be used within a large temperature range.
Specific performance requirements for material used for wiring a solar panel installation are given in national and local electrical codes which regulate electrical installations in an area. General features required for solar cables are resistance to ultraviolet light, weather, temperature extremes of the area and insulation suitable for the voltage class of the equipment. Different jurisdictions will have specific rules regarding grounding (earthing) of solar power installations for electric shock protection and lightning protection.
Solar street lights are raised light sources which are powered by solar panels generally mounted on the lighting structure or integrated into the pole itself. The solar panels charge a rechargeable battery, which powers a fluorescent or LED lamp during the night.
Most solar lights turn on and turn off automatically by sensing outdoor light using solar panel voltage. Solar streetlights are designed to work throughout the night. Many can stay lit for more than one night if the sun is not in the sky for an extended period of time. Older models included lamps that were not fluorescent or LED. Solar lights installed in windy regions are generally equipped with flat panels to better cope with the winds.
Modern designs use wireless technology and fuzzy control theory for battery management. The street lights using this technology can operate as a network with each light having the capability of performing the turning on and off of the network.
Solar ETC/FPC Water Heaters
The solar water heating systems can be divided into two on the basis of the solar collectors used in them. Collectors are one of the major components of a solar water heating system that collects the sunlight in order to heat the water. They have Evacuated Tube Collectors and Flat Plate Collectors.
Evacuated Tube Collectors comprised of double-layered borosilicate glass tubes evacuated to provide insulation. The absorbing material coated in the outer wall of the inner tube helps in the absorption of solar radiation and later transfers the heat to the water that flows through the inner tube.
Whereas in Flat Plate Collectors, insulated metallic box consist of absorber sheets and built-in channels or riser tubes to flow water is placed on the top of the glass sheet. The absorber sheets absorb solar radiation and transfer it to the flowing water.
Solar mounting structures are the supporting pillars of PV modules installed to generate electricity from sunlight. These structures set the solar panels at an angle that can collect maximum solar radiation.
Believing the fact that solar is the future, a large number of people are seeking more efficient and cost-effective solar gadgets to achieve the maximum benefit of the technology. One of the biggest sectors of innovation within this field pertains to the mounting structure.
Solar mounting structures are one of those crucial components of a solar system that contribute significantly to increasing the output produced. This is because solar panels, the electricity-generating gadgets function favourably when the sunlight they absorb is shade free and active for long hours of the day. For this, the panels should be mounted at a critical tilt angle.
There are different types of solar mounting structure in the market, so it’s worth spending 10 minutes reading the complete information and selecting the ideal one that meet all your requirements.
ACDB and DCDB are power distribution cum safety circuit boxes that prevent our appliances and solar components from short circuiting and high voltages. They act as circuit breakers when there is extreme fluctuation in energy and increased electricity surge flows through the wires and these distribution boards. Junction Boxes provide the extra electrical protection to the solar system during failures. Array Junction Box or DCDB provides the interconnection between the input string from the solar panels, and the output string to the solar inverter. The Array Junction box or DCDB is customized for different configurations of the solar inverter,
These boxes are installed inside the premises to control and supply the electricity to various electrical appliances. DCDB is installed between the solar panel and solar inverter, while ACDB is installed after the solar inverter but before the connected load.
MC4 connectors are single-contact electrical connectors commonly used for connecting solar panels. The MC in MC4 stands for the manufacturer Multi-Contact and the 4 for the 4 mm diameter contact pin. MC4s allow strings of panels to be easily constructed by pushing the connectors from adjacent panels together by hand, but require a tool to disconnect them to ensure they do not accidentally disconnect when the cables are pulled. The MC4 and compatible products are universal in the solar market today, equipping almost all solar panels.
