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  • Voltage Regulators 




    Voltage Regulators and Load Diversion Controllers


    DC Voltage Regulators

    A conventional photovoltaic (PV) system driving a D.C. load consists of a PV array, storage battery, a Battery Voltage Regulator (BVR) and a load. According to best scenario case, the load voltage is equal to the battery voltage. The battery voltage varies according to its state of charge (SOC).

    The voltage of typical lead-acid batteries, widely used in PV systems, varies between 93.5 and 120% of its nominal voltage according to its state of charge. Such voltage variations are accepted for many D.C. loads. However, critical loads, such as some communication systems, require a regulated voltage, hence such battery voltage variations are not accepted for these applications.

    The conventional solution of this problem is to operate the PV system at a higher voltage and to include a Voltage Regulator as a control circuit that is doing just that is keeping the PV output at a constant value on the load and battery side. In some instances when the output is too much we will introduce Passive Elements hence the load is operating within the allowed limits. We will have power dissipation in the passive elements as a power loss. This kind of passive elements are mostly used with wind turbines and solar pumps type of ecosystems and they are Diversion Loads and Diversion Controllers.

    Other type of voltage regulators used with PV Systems are Transformers. They compensate any voltage drop on a longer feeder, by increasing the voltage which is fed to the load. That apply on the AC load side of the installation. On the DC side we have DC to DC Transformers which will decrees the voltage fed to the battery bank or some direct DC consumers to match manufacturer recommended values.

     [Tech Support]  Knowledge Base Information: 101 RENEWABLE - VOLTAGE REGULATORS  

    The information posted herein has been compiled by Clean Energy Brands from OEM product data and reputable publications. All rights reserved!



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