Solar power provides us with electricity.

We probably take all of this for granted and if we lost them we would probably panic. We take for granted that these conveniences will be there for us from now on. We expect glitches to happen but we want them to be fixable without going long without all of these. We appreciate the heat in the winter when it snows outside and when the temperatures drop.

We need water to live and although it is usually running under the ground we want the convenience of it running through our pipes and into our homes.

Electricity is nice when you can have lights with just a simple flick of the switch. In the summertime we experience some power outages when everyone turns on their air conditioners in order to tolerate the extreme temperatures beating down from the sun. This heat is sometimes so intense it can make someone, who has trouble breathing, struggle for every breath.

The sun is a very intense ball of gas up in the atmosphere. It burns twenty four hours a day, seven days per week. We only see it during out daytime but on the other side of the globe they get the daytime when we get the night. When the sun light beams down on the earth’s surface, a small percentage of the solar radiation heading for earth gets reflected. There are larger amounts of the sunlight that is actually absorbed.

When you consider the fact that the sunlight must go through fog, clouds, dust particles and harmful pollutants in order to reach us that reduce the amount of sunlight that we receive even more. When it finally makes it to the earth’s surface it is then radiated back up into space. When it reaches the earth, plants and vegetation absorb it and the oceans, winds and other resources absorb the sunlight as well.

Some people use some of the heat generated from the sun in order to heat homes, power electricity and provide water to their families and businesses. When you think about all that you have that runs through a machine it may be possible to reroute that in order to run it all by sunlight. Scientists have only started to make this possible but it is far from being completed. When you consider all the solar energy that reaches the earth’s surface and then radiated back into the atmosphere, you could power electricity, heat and water from now on. This solar energy can be redirected and concentrated using special boxes that attract the light during the day to heat water and homes throughout the night.

Solar power is very important and provides a natural way to heat, obtain electricity and water with just a little more effort. In the future we may have no other choice but to look at natural resources in order to have these necessities and conveniences. Solar power is important now and in the future.

We, Wuhan Wellsee New Energy Industry Co., Ltd.is a big manufacturer of researching and producing solar controllers for 12V/24V/48V 6A-60A types..

Quite a few charge controls have a “PWM” mode.

PWM stands for Pulse Width Modulation. PWM is often used as one method of float charging. Instead of a steady output from the controller, it sends out a series of short charging pulses to the battery – a very rapid “on-off” switch. The controller constantly checks the state of the battery to determine how fast to send pulses, and how long (wide) the pulses will be. In a fully charged battery with no load, it may just “tick” every few seconds and send a short pulse to the battery. In a discharged battery, the pulses would be very long and almost continuous, or the controller may go into “full on” mode. The controller checks the state of charge on the battery between pulses and adjusts itself each time.

The downside to PWM is that it can also create interference in radios and TV’s due to the sharp pulses that it generates. If you are having noise problems from your controller, see this page.

Pulse Width Modulation (PWM) is the most advanced technology pertaining to charge controllers and they perform constant voltage battery charging by switching the solar system controller’s power devices. When in PWM regulation, the current from the solar panels tapers according to the battery’s condition and recharging needs. Charging batteries using solar power requires challenging technology like PWM for prolonging the batteries’ life. The issue with batteries is that, while charging and discharging, they release lots of gases that can reduce their lives.

An ordinary solar controller cannot regulate the charging and discharging that accurately hence gassing problem arises. A PWM system works on algorithms; so the PWM algorithm gradually reduces the charging current to avoid heating and gas releases of the battery, yet the charging continues to return the utmost amount of energy to the battery in the unswerving time. The result is a higher charging efficiency, quick recharging, and a healthy battery at full capacity. Some of the advanced Pulse Width Modulation Charges also have features like recovering lost battery capacity, increase the charge acceptance, equalize drifting battery cells, disulphate (removing excess sulphur deposits) the battery, regulate battery heating & gassing and prolong battery life.

There are many leading manufacturers of PWM based Solar Charge Controllers in the market and choosing the right one can be sometimes quite confusing. To add to worries they don’t come cheap too! Make sure you read the whole manual to know the credentials of the manufacturer; because in the longer run instead of prolonging the battery life they may in fact harm them. So don’t go for low quality cheaper options. Check out manufacturer warranty too as servicing and repairing may be required going forward. Rest assured this technology will be really beneficial for your precious batteries.