| |   Solar Boost 6024HDL (with display)
RV Power Products Solar Boost 6024HL & 6024 HDL 60Amp, 12/24/48V MPPT Charge Controller - Now UL Approved!
Solar Boost 6024 is a 12/24/48 volt photovoltaic (PV) charge controller capable of delivering up to 60 amps of output current. Patented* Maximum Power Point Tracking (MPPT) technology allows Solar Boost 6024 to increase charge current up to 30% or more compared to conven- tional charge controllers. Controllers without MPPT technology simply can't deliver the charge current provided by Solar Boost 6024. Don't waste money by throwing PV power away! Get the power you paid for with Solar Boost 6024.
Solar Boost 6024 does much more than increase charge current. It offers an advanced fully automatic three stage charge control system to ensure the battery is properly and fully charged, resulting in enhanced battery performance with less battery maintenance. Reliable high efficiency power conversion is achieved using the latest generation power MOSFET transistors, with output power delivered via a series pass Pulse Width Modulation (PWM) control scheme. An electronic current limit feature prevents output current from exceeding 60 amps. Output current limit eliminates worry about overload or nuisance fuse blow when PV power production is unexpectedly high. An equalize function is also included to periodically condition liquid electrolyte lead-acid batteries. An optional user friendly digital display is available to monitor PV charge performance. The display shows battery voltage, solar panel current, output charge current, charge mode and state of charge. It can be provided in the controller as pictured above, as a remote panel installed up to 300 feet away, or both. Optional temperature compensation of charge voltage is also available for both lead-acid and NiCd batteries to further improve charge control and battery performance. And now, it carries the seal of approval fron United Laboratories.
How Does Solar Boost 6024 Increase Charge Current? A solar module is a constant current device. As shown on a typical voltage-current curve, current remains rela- tively constant over a wide range of voltage. A typical 75 watt module delivers 4.45 amps @ 17 volts. Conventional controllers connect the module directly to the battery when the battery is discharged. When this 75 watt module is connected to a battery charging at 12 volts, the module still provides about the same current. But, because module output voltage is now held lower by the battery, it can only deliver 53 watts of power. This wastes a whopping 22 watts or nearly 30% of the available power!
Solar Boost 6024's patented MPPT technology operates in a very different fashion. Under these condi- tions Solar Boost 6024 calculates the maximum power voltage at which the module can deliver its maximum available power, in this case 17 volts. It then operates the module at 17 volts to extract maximum power. Solar Boost 6024 continually recalculates the maximum power voltage as operating conditions change. Solar module power, now 75 watts, feeds a high efficiency power converter which reduces the 17 volt input to battery voltage at the output. The full 75 watts delivered at 12 volts would produce 6.25 amps. A current increase of 1.8 amps or 40% is achieved by converting the 22 watts that would have been wasted into useable charge current. This 12 volt example assumes 100% efficiency to illustrate the principal of operation. Actual boost will be somewhat less as some power is lost in wiring, fuses, and in the Solar Boost 6024 controller.
The actual charge current increase you will receive varies with module temperature and battery voltage. Lower module temperature increases available power, while lower battery voltage increases current for a solar output power level. Under normal conditions in comfort- able temperatures, current increase typically varies between 10 to 25%, with 30% or more easily achieved with a discharged battery and cooler temperatures. What you can be sure of is that Solar Boost 6024 will deliver the highest charge current possible for a given set of operating conditions. In conditions where extra solar power is not available, Solar Boost 6024 will operate as a conventional series pass PWM controller.
Three Stage Charging Taken To The Next Level Controllers that determine full charge based on time or other arbitrary factors cannot realize all the benefits three stage charging has to offer. The proper indication of when a lead-acid battery is fully charged is when net battery charge current during acceptance charge decreases to 1.0 amps per 100 amp-hours of battery capacity. Solar Boost 6024 uses net battery charge current optimized to battery size in amp-hours to determine full charge. This method charges the battery quickly and completely without undercharge, overcharge or excessive water loss. An internal precision alloy shunt is used to measure battery current when battery load during charge is relatively constant. When battery load is highly variable during charge, Solar Boost 6024 can connect to an external shunt measuring net battery current. If desired, Solar Boost 6024 can also operate as a two stage charger.
Three Stage Battery Charging Bulk Charge Charge begins with a high current of up to 60 amps. During this stage the battery receives maxi- mum available current to rapidly recharge the battery. Acceptance Charge Following bulk charge the acceptance voltage is applied to the battery. During this stage, charge current decreases as the battery charges.
Float Charge Once the battery is fully charged, the float voltage is applied to the battery to properly maintain it in a fully charged state without excessive water loss.
Equalization A fourth charge mode. Equalization is a controlled overcharge which is manually enabled to periodically condition flooded lead-acid batteries.
|
|
| |
