Schemes for installing a DC Diversion control or Dumpload
The 2nd most common battery charging installation for a charge controller is to protect the batteries during the re-charging phase from a very erratic power generation source like wind. Simply put, charging is the act of refilling the battery with electricity from somewhere else that comes in DC format and varies in Amperage, Voltage, or both. However, you only want to fill the tank, you don't want to blow it up, or stress the sides. You don't want to hurt the batteries with this varied charging, so you install the charge controller to handle it the varied voltage and the dumpload to catch what the battery can't use safely.
The charge controller can take a range of voltages and amperages, and slam that variable power, cleanly back into the battery. Batteries are designed to be charged in fairly tight voltage and amperage ranges to protect the materials inside and the controller does this job. Apply too much power and you cook the inside of the battery. Apply too little power and the battery will not charge. The charge controller takes the power from a variable input, in this case wind, and pushes it into the battery at the right levels and anything else is "DUMPED" into the secondary load.
Working example: You buy a 1.5 KW wind generator to augment the solar panels. Since this is an off grid home, if you get too much power, you need to do something with it.
The 2nd most common battery charging installation for a charge controller is to protect the batteries during the re-charging phase from a very erratic power generation source like wind. Simply put, charging is the act of refilling the battery with electricity from somewhere else that comes in DC format and varies in Amperage, Voltage, or both. However, you only want to fill the tank, you don't want to blow it up, or stress the sides. You don't want to hurt the batteries with this varied charging, so you install the charge controller to handle it the varied voltage and the dumpload to catch what the battery can't use safely.
