 | |  | |  | |  |
 |
 |
 |
 |
 |
 |
 |
 |
| Sub-Sections |
 |
 |
 |
 |
Charge Controllers, MPPT, PWM Charging |
| Main Sections |
| Search OY Not Solar |
| Solar Charge controllers are the devices used to regulate the flow of volts and amps being pushed into a battery or battery bank from a solar panel, windmill, Or other sources of electrical energy generation. |
| Helps to remove buildup on the plates in a battery extending a battery’s life. - Pulse = Stop and start like with your heart beat, (Hammers the lead plates clean) - Width = Time the pulse is turned on and time is the pulse is turned off. - Modulation = Controls more or less volume of the charge. All three of the above are used at the same time to charge faster and clean the plates. When the battery is low on charge PWM will pulse longer with at a higher modulation. As the battery fills up it will pulse shorter with a lower out power level |
| OY Not Solar Power Home | Solar Power Site Map | Contact OY Not Solar Power Solar Products Spec Sheet Library | Grid Tie Backup by Array Size | Grid Tie Only By Array Size |
| The MPPT Charge Controller Is known for the ability to down convert voltage while up converting the amps to give you as much as 30% more power from a solar array that is normally lost when using a common or non MPPT controller. Example: A solar module with a 17.2 volt Vmp would be pulled down to the battery voltage If the battery was at 11.7 volts using a common charge controller. A loss of 5.5 volts or 32%. If you had 1000 watts in solar modules, you just lost 320 watts. That is about the price of 3 MPPT controllers. |
MPPT ( maximum power point tracking ) |
PWM (pulse width modulation) |
| This is done by adjusting the power from the source based on how much power is required to bring the batteries up to full charge. |
Solar Controllers are engineered to keep you from damaging your batteries. |
| Is normally the first step. In wet cell lead acid batteries it will allow enough / max power through the controller to bring the voltage up to a set voltage. This will keep the acid water mix bubbling and hold at this level for a set amount of time which is called the absorb stage. |
Bulk, |
| Is a tapered charge which the solar energy controller will slowly taper down the amps as the battery reaches full charge not allowing the battery charge to go over the bulk voltage limits. |
Absorb stage, |
| The charge controller will auto switch to the float charge, which is a lower voltage closer to the nominal battery voltage. During this stage as you use more power from the batteries the unit will adjust the input amps up and down to hold this float voltage. |
Float, |
| Is only used on wet cell batteries and is normally 1 volt higher then the bulk charge voltage. Read your battery and charge controllers instructions before EQing your battery. |
EQ (Equalize) |
| All rights reserved. Copyright (c) 2006 - 2010 OY Not LLC Pea Ridge Arkansas USA. Phone 479-488-6048, Contact: sales @oynot.com |
 |
| OY Not Solar Disclaimer Charge Controllers | MPPT | PWM OY Not Solar Privacy Policy |