Patent ID: 11916511
Assignee: NATIONAL TECHNOLOGY & ENGINEERING SOLUTIONS OF SANDIA, LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A solar-battery integrated DC system for controlling current flow on a direct current (DC) bus, comprising:
a controller comprising:
a pair of input terminals for receiving a DC battery voltage from a battery;
a switching module for controlling a bi-directional current flow between the battery and the DC bus, the switching module having a pair of output terminals and photovoltaic (PV) and Battery voltage and current sensors;
a control path for controlling the switching module, the control path comprising:
a current generator to generate a reference current in response to a reference voltage detected by the voltage sensor; and

a comparator connected at the output of the current generator, the comparator configured to compare the reference current with a battery current and output a signal to a controller module; the controller module configured to generate a reference value; and
a pulse width modulating generator configured to receive the reference value and modulate the switch module to control current flow and energy flow between the DC bus and the battery to adjust the controller output voltage to match the DC bus;

wherein the DC bus is further connected to a PV array; and
wherein the DC bus is connected to an inverter, the inverter controlling alternating current (AC) to inverter output terminals.