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Jun
Load Sharing Power Supplies. Load sharing distributes load currents equally among paralleled voltage-stabilized supplies and can add hot-swap capability. Simply put the voltage on the wire is proportional to the total current supplied to the load. Load sharing and redundant power systems - YouTube. This technique is being driven by the need for reliable continuous uninterrupted system power.
This method exhibits very poor current sharing at low currents and improves at higher currents but can still have large current imbalances between supplies. This solution has been proven to work for 12V-19V input voltages common laptop power supplies and used to provide 10A current to the load. This will cause current in excess of the load current to circulate among the supplies in the array and likely lead to immediate overload of one or more of the supplies. When both power supplies are load sharing for example the two supplies share the dissipated heat improving reliability. A load-shared power system also allows the addition of power supplies if system requirements change and load currents increase. The simplest method to load sharing is referred to as the droop method.
The generator load sharing principle is crucial to understand when attempting to parallel generators at any facility including data centers and power plants.
Active current share uses a signal wire interlinking two or more power supplies. When both power supplies are load sharing for example the two supplies share the dissipated heat improving reliability. The video is here h. Active current share uses a signal wire interlinking two or more power supplies. Their forward voltage is adjusted to share the load currents between supplies. The maximum MOSFET voltage drop can be set with a resistor.