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electrical:solar:charge_controller [2018/06/30 19:33] frater_secessus [Using LOAD output] |
electrical:solar:charge_controller [2018/11/20 13:06] frater_secessus |
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* during times of low irradience (low light levels due to low angle or overcast conditions)((this is a function of higher input voltages))((https:// | * during times of low irradience (low light levels due to low angle or overcast conditions)((this is a function of higher input voltages))((https:// | ||
- | === designing for MPPT === | + | There are some considerations when [[electrical: |
- | + | ||
- | There are benefits from using [[electrical: | + | |
- | + | ||
- | MPPT controllers are most efficient when input voltage (Vpanel) is about 2x nominal battery voltage (Vbatt). | + | |
==== shunt ==== | ==== shunt ==== | ||
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===== multiple charge controllers | ===== multiple charge controllers | ||
- | Multiple controllers (with separate arrays) can be used to charge a common bank. The controllers should be configured with similar charging setpoints for the greatest efficiency.((http:// | + | [[electrical: |
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===== Using LOAD output ===== | ===== Using LOAD output ===== | ||
- | It is common for charge controllers to have a LOAD output for powering (or switching) loads. | + | It is common for charge controllers to have a LOAD output for powering (or switching) loads. |
+ | |||
+ | Not all types of loads should be run from these terminals, though. | ||
> Heavily inductive or capacitive loads such as **pumps, motors, compressors, | > Heavily inductive or capacitive loads such as **pumps, motors, compressors, | ||
inverters** should not be wired to the controller’s Load terminals. In addition, loads exceeding the Load Current Rating of the controller should not be connected to the controller’s Load terminals.((http:// | inverters** should not be wired to the controller’s Load terminals. In addition, loads exceeding the Load Current Rating of the controller should not be connected to the controller’s Load terminals.((http:// | ||
- | One can run loads heavier than the controller is rated for (or inductive/ | + | elsewhere they say: |
+ | |||
+ | > Inductive loads can generate large voltage spikes that may damage the controller’s lightning protection devices.((http:// | ||
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+ | although an exception is made for the SunSaver MPPT which " | ||
+ | |||
+ | One can run loads heavier than the controller is rated for (or inductive/ | ||
You may also be able to use the LOAD output to create a [[electrical: | You may also be able to use the LOAD output to create a [[electrical: |