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Virtually any solar power system that uses batteries needs a solar charge controller. The solar charge controller functions to control the power as it moves from the solar panels to the batteries. A proper charge controller will prevent the batteries from being overcharged. You can read solar power battery if you need to learn more about solar power batteries.

The simplest type of charge controller functions to monitor the battery voltage and opens the circuit to stop the charging process when the battery is fully recharged. Previously, charge controllers often had mechanical relays to open and close the circuit.

Eventually, pulse width modulation (PWM) became the norm for the charge controlling mechanism. This is a technique by which the amount of power supplied to a battery is reduced gradually as the battery reaches maximum charge. In addition to decreasing the stress on the batteries caused by the charging process, PWM ensures that they’re more fully charged, making them more efficient from the user’s perspective. It’s also possible to use a PWM charge controller to keep batteries “floating,” or in a completely charged state, for as long as you like. PWM also has the extra advantage of not having any breakable mechanical connections.

Maximum power point tracking, or MPPT, is the most recent evolution in solar charge controller technology. MPPT controllers convert excess voltage into amperage. This feature has a couple of major benefits.

The majority of solar power systems make use of 12 volt batteries, not unlike the ones found in cars, but these features work regardless of voltage. Solar panels usually provide much more voltage than the batteries require. Converting the excess voltage into amps reduces the time it takes to charge the battery, while the charge voltage stays at an optimal level. A solar power system with this kind of charge controller will provide power more efficiently.

Power loss is also largely eliminated with MPPT charge controllers. As low-voltage electricity moves along wires, it can experience high levels of loss, dragging down the efficiency of the system. A PWM charge controller used in a system with 12v batteries, for example, would use electricity of around 18v. An MPPT controller will use the highest voltage of any type of charge controller currently available. MPPT controllers experience less power loss because of this improvement.

MPPT charge controllers cost a bit more, but they represent a significant improvement. For this reason, they’re highly recommended. Finally, it’s also possible to prevent reverse-current flow with some modern charge controllers. During the periods when solar panels have stopped generating electricity, such as in overcast conditions, electricity can sometimes begin to flow away from the batteries to the solar panels. This sort of power loss can also make a serious dent in the overall efficiency of a solar power system. At these times, a charge controller will open the circuit, preventing any power from being transferred back to the solar panels.

Rising oil prices and the increasing tolls of pollution are motivating a significant number of people to switch to solar battery chargers. Go to 12 volt solar charger for more in solar interesting info about solar chargers.

Can you build a solar panel for under 0? You can get more information by reading this guide Homemade Energy Review. In this guide, you will get specific instructions on what is best to build based on the size of your house and your location. You will also get step-by-step diagrams on how to build your own solar power system.

Technorati Tags: 12 volt solar charger, homemade energy review, solar charge controller, Solar Power Battery

The purpose of this article is to explain the role of a solar power inverter in the home solar system, along with issues pertaining to different types of inverters, and solutions to common problems associated with them.

In the majority of home solar systems, power is initially produced by solar panels before being used to charge batteries. The solar power battery then supplies electricity to fixtures in the home. The purpose of this arrangement is to ensure that power is available even in the dark, when the solar panels aren’t actually generating power. Solar panels and batteries both work with Direct Current (DC) electricity. This has to be converted to Alternating Current (AC), which is used by appliances in the home. The conversion from DC to AC is handled by the inverter.

When it comes to inverters, there are two main types: Modified Sine Wave (MSW) and True Sine Wave (TSW). MSW inverters are the more bare-bones of the two, as they simply convert DC electricity into rough, 120v 60 cycle AC. Some types of appliances are incompatible with MSW inverters. For example, when used in conjunction with an MSW inverter, stereo equipment will often produce a noticeable hum. TSW inverters, on the other hand, have no problems in a home setting.

Maintaining an inverter requires a few precautions. Avoid putting the inverter in the same box as the batteries, but make sure it’s otherwise as close to them as possible. The wire connecting the batteries to the inverter needs to be of sufficient size. The correct size will probably be given in the inverter instructions. It’s good to have a fuse on all wires to and from the inverter. Make sure the inverter is in a place where it will not be exposed to wetness or high temperatures.

Solar power inverters are known to encounter a couple of common issues. First, there’s RF interference. Inverters produce radio noise while they’re active. Radio receivers should be placed as far away from the inverter as possible. Using a battery powered radio will also solve this problem, and the batteries can then be recharged with the solar power system.

The other issue is that of phantom loads. A phantom load is the electricity drawn by a device while it’s turned off, which is a common issue among many new TVs and other devices that use “standby” modes. Since they’re always using power, these devices keep inverters from going to sleep. The inverters then begin contributing to the problem of wasted energy, as they’re constantly in active mode. Usually, this problem can be addressed through the use of a power strip with an on/off switch. Turning the power strip off will keep the devices from drawing power, so the inverter can then go into its low power mode.

For more information about the latest technological improvement being offered in solar panel systems, go to Solar Micro Inverter.

For the finest guide to building your own solar panels, including detailed instructions and step-by-step videos, go to Build Your Own Solar Panel.

Technorati Tags: build your own solar panel, solar micro inverter, Solar Power Battery, Solar Power Inverter

There are a few things to think about before switching to a solar power system. The sheer variety of roof solar panels available today can be overwhelming. Roof solar panels can offer all kinds of different benefits, and it’s worth getting to know some of the different types available.

One feature that all roof solar panels have in common is that, as a result of their design, the solar cells inside the panels receive as much sunlight exposure for as long as possible. DC electricity is generated by these solar cells when they come in contact with sunlight. It’s possible to generate any amount of voltage required by wiring together the correct number of solar cells. The solar panels then transfer the DC electricity to an inverter to be converted to AC, which can then be used by appliances in the home. Any excess power can be sent to the power grid. This reverses the user’s power meter correspondingly, and the power company credits the power produced. There are a couple of options for those times when the roof solar panels aren’t producing power (such as in overcast conditions). Batteries are one solution; they can receive power from the power system, and then provide power to the home when the system goes inactive. If you want to learn more about batteries, go to Solar Power Battery.

The inverter can also simply switch the house back over to the power grid once energy stops arriving from the solar panels. The cost of installing a battery bank is almost always recouped before very long, as it provides significant savings. For more information about solar power inverters, go to Solar Power Inverter.

It’s important to pick the right roof solar panels. Some are more efficient than others. In other words, even with the same amount of sunlight exposure, some roof solar panels will generate more power than others. A system using efficient solar panels will be able to produce the same amount of power with fewer panels.

Solar panels can also differ in terms of reliability. The durability of the enclosure may be a concern. The solar cells inside the enclosures are very fragile and must be protected from the elements. Enclosures that aren’t well made will often allow moisture and objects through. If cells are damaged frequently, the cost of replacing them can quickly add up. The reliability of the solar cells themselves is also something to consider.

Solar cells differ in how they’re built and, as a result, the capabilities they offer. The two main styles of solar cells are monocrystalline cells and polycrystalline cells. The superior of the two in terms of quality is the monocrystalline solar cell. Their durability and efficiency are greater than those of polycrystalline cells. Monocrystalline cells are worth the increased cost for these reasons. If you want to know about solar cell efficiency, go to Solar Cell Efficiency.

Technorati Tags: Roof Solar Panels, Solar Cell Efficiency, Solar Power Battery, Solar Power Inverter