electrical:12v:multipoint_charging
Differences
This shows you the differences between two versions of the page.
Both sides previous revision
Previous revision
Next revision
|
Previous revision
Next revision
Both sides next revision
|
electrical:12v:multipoint_charging [2022/02/22 13:02] frater_secessus [how to make them cooperate] |
electrical:12v:multipoint_charging [2022/02/22 15:21] frater_secessus [concurrent charging] |
In general, **the charging source with the highest voltage will "win"**. | In general, **the charging source with the highest voltage will "win"**. |
| |
Some commercial products integrate charging from multiple sources into a single unit. [[https://www.renogy.com/dcc50s-12v-50a-dc-dc-on-board-battery-charger-with-mppt/|Renogy's DCC50s]] (or smaller DCC30s) are popular because they combine an MPPT solar charge controller with an Alternator charge controller into a single easy package. | Exeption: some commercial products integrate charging from multiple sources (like [[electrical:12v:b2b#examples_-_combo_with_solar_charge_controller|combination DC-C chargers]])into a single unit so there is no "competition". |
==== why one source wins ==== | ==== why one source wins ==== |
Most charging involves holding((or trying to reach)) a particular voltage [[electrical:12v:electrical_notation|setpoint]].((current-terminated Absorption excepted for purposes of this discussion)) If a charging source sees the bank voltage is above its own setpoint it thinks the job is done; it sits quietly. | Most charging involves holding((or trying to reach)) a particular voltage [[electrical:12v:electrical_notation|setpoint]].((current-terminated Absorption excepted for purposes of this discussion)) If a charging source sees the bank voltage is above its own setpoint it thinks the job is done; it sits quietly. |
But if you want to the charge controllers (and some [[electrical:converter|converters]]) can be convinced to stay //roughly// in sync and keep charging together. This is done by **configuring the Absorption and Float setpoints on the controllers to be the same**.((including Absorption termination setpoints like time or current)) There will be short periods where one controller makes a change before the other, but for most of the time both will be contributing at the same time. | But if you want to the charge controllers (and some [[electrical:converter|converters]]) can be convinced to stay //roughly// in sync and keep charging together. This is done by **configuring the Absorption and Float setpoints on the controllers to be the same**.((including Absorption termination setpoints like time or current)) There will be short periods where one controller makes a change before the other, but for most of the time both will be contributing at the same time. |
| |
| Note: there are high-end controllers/chargers which communicate with each other to coordinate charging. That feature is beyond the scope of this article. |
===== serial charging ===== | ===== serial charging ===== |
| |
electrical/12v/multipoint_charging.txt ยท Last modified: 2024/03/29 18:55 by frater_secessus