Residential solar power for homes
Residential solar power in action!
* Save money by reducing or eliminating your monthly electric bill
* Depends less on your energy supplier
* Make a positive impact on the earth
For homeowners this is all done through the installation of a photovoltaic solar system.
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Solar power issues ...
* What is a PV solar power system?
* PV devices
* Balance of System (BOS)
* Types of PV systems
What is a PV solar power system?
A PV system converts solar energy into solar power for the use of electrical appliances in your house. It consists of three subsystems.
* PV devices
* Load
* Balance of System (BOS)
The PV devices generate solar electricity by converting sunlight into direct current (DC) electricity.
The load is simply the device that consumes power. Your refrigerator is a good example of a load.
The BOS consists of all equipment between the PV device and the load. It includes the structures for the assembly of PV devices, power and air conditioning systems to the DC power to AC (AC) for use by the load, and batteries to store the PV generated electricity to convert, if desired.
PV devices
The solar cell is the basic building block of a PV system. He is known converts solar energy directly into electricity through a process such as the photovoltaic effect.
A single solar cell does not generate much power. The amount varies, but it's about 1 or 2 watts. But you can increase solar power by connecting them to a larger unit called a PV module produces. PV modules are also known as solar energy panels. The performance of a PV module in the range from 10 watts to 300 watts. To generate even more power, PV modules can be combined to form a PV system.
Residential solar power for homes
PV cell, module and array
Photo: Courtesy U.S. DOE / EERE
A PV system can comprise any number of modules. This modularity allows photovoltaic systems very flexible. They are able to be all electrical needs, whether the amount of power is needed small or large.
But do the benefits of power generated by a PV system, you need a few more components ...
Balance of System (BOS)
The BOS components allow solar power to correct, the load can be applied.
* Mounting Structures: The assembly systems needed to integrate your PV system to your house the structural systems.
* Array DC Disconnect: stops the flow of electricity from the PV system. Essential for system maintenance and troubleshooting.
* Charge Controller: Monitors battery bank, so to prevent it from overcharging.
* Battery Bank: A group of batteries wired together to save the energy produced by the PV system for future use.
* System Meter: Allows you to monitor the performance and the status of your PV system.
* Main DC Disconnect: Stop the flow of current from the battery bank to the inverter.
* Solar Inverter: PV systems produce direct current (DC). The inverter converts the DC current into standard alternating current (AC) used in your home.
* AC Breaker Panel: This is the same circuit breaker box, you already have in your house. Here the electricity from PV array and the utility will be forwarded to your home's electrical system.
* Meter: Measures the amount of electricity supplied or made your home. The utility is used to calculate your monthly electricity bill.
* Backup Generator: generates AC power to DC power that is by the drive for storing converted into the battery bank. Used when the PV devices are not able to produce electricity for a long time.
The exact BOS components you need to install depends on the type of PV system.
Types of PV systems
The three most common types of photovoltaic systems for private customers are solar energy ...
* Grid-Tied PV System
* Grid-connected PV system with battery backup
* Stand-alone PV system
Grid-connected PV system
A grid-connected PV system allows you to use the power from your PV system, electricity generated from the network. If your PV system produces electricity, your home to solar power will be provided. During the times when your PV system is not producing electricity, as in the night, your home will receive electricity from the grid.
Excess electricity generated by your system are fed back to the grid. This is known as net metering. With net metering, when electricity from the power meter forward and rotates when you rotate providing electricity to the grid your meter backwards. This offset means that you actually get to market rates for electricity, the AC!
For most people, is a grid-connected PV system is the ideal configuration.
You get all the benefits of using your own solar power and the benefits of connected to the network. It is also less expensive than other types of PV systems.
Grid-connected PV system with battery backup
A grid-connected PV system can also be supplemented with a battery backup.
Why do you need a battery backup, because you are connected to the network?
Well designed grid-connected PV inverter system to shut down when the grid experiences a power outage to repair the utility workers from being protected by electricity from your PV system in shock. As a result of a power failure, you will not be able to use electricity from your PV system.
However, if your PV system, a battery bank, during a power failure, you can use includes the energy that produces your PV system and stored in the batteries.
Grid-connected PV system with battery backup diagram
Grid PV system with battery backup diagram Tied
A grid-connected PV system with battery backup is ideal if you live in an area unreliable, power from the grid or the experience power outages due to natural disasters.
Stand-alone PV systems are designed independently of the network and to provide all the power you need for your home.
If you own a home that is in a remote area with no mains services, or where it would have to have very expensive to run power lines to your home, a stand-alone PV system would be ideal.
This type of PV system is also desirable if you're looking to go all green are your source of electricity.
Solar Power Your Way!
As you can see, give home solar power systems will use a flexible way, the power of the sun to generate your own environmental damage, cost-efficient solar electricity!
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