Solar arrays provide power to loads and should ideally be operated at their maximum power point (MPP) to optimize the power output from the solar arrays under various environmental and operating conditions. Maximum power point tracking (MPPT) techniques control operating conditions so that the solar arrays are at or near the MPP. However, MPPT configurations use a DC-DC converter that contributes to power loss. The DC-DC converter in the disclosed configuration is relocated to a position in front of a battery, so that the power loss contributed by the DC-DC converter is reduced. A switch is also coupled across the DC-DC converter and can be switched closed so as to eliminate the power loss contribution of the DC‑DC converter. The switch is closed in situations when the battery rather than the solar array is providing power to the load.
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Anonymous, "Maximum Power Point Tracking Using a DC-DC Converter Coupled to Photovoltaic Cells and a Battery", Technical Disclosure Commons, (January 02, 2019)