Off-grid photovoltaic VRLAB (Valve Regulated Lead Acid Battery) energy storage control device and working method thereof
An energy storage control, off-grid technology, applied in photovoltaic power generation, circuit devices, battery circuit devices, etc., can solve problems such as increasing the economic burden of small off-grid photovoltaic systems, increasing the operating cost of photovoltaic systems, and failing to achieve refined control. , to achieve the effect of easy implementation and control, improved charging and discharging efficiency, and strong real-time processing capability
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[0031] The invention provides a small off-grid photovoltaic VRLAB energy storage control device (see figure 1 ), which is composed of a photovoltaic array, a filter unit, an energy management unit, a VRLAB unit, a DC / DC converter, and a DC / AC converter; wherein, the photovoltaic array is unidirectionally connected to the DC / DC converter through the filter unit , It is unidirectionally connected with the energy management unit; the energy management unit is bidirectionally connected with the VRLAB unit; the VRLAB unit is bidirectionally connected with the output terminal of the DC / DC converter; the output terminal of the DC / DC converter is connected with The DC load is unidirectionally connected, and is unidirectionally connected to the AC load via the DC / AC converter.
[0032] The filtering unit (see figure 2 ) Is composed of a capacitor C1, a capacitor C2, a resistor R, and an inductor L; wherein the two ends of the capacitor C1 are respectively connected to the output end of th...
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