Controllers, devices, and methods for controlling direct current fast charging devices

A system, comprising:

• one or more processors, coupled with memory, to:
• generate an estimated battery current value Iest based on an output voltage Vo of a DC-DC converter, and a current value I*, wherein the current value I* is one of received by a controller or determined from a requested voltage value V*;
• generate a current reference value Iref based on the current value I* and the estimated battery current value Iest;
• generate a control signals phase shift θ* based on an input voltage Vin, the output voltage Vo, and a requested power value P*;
• and
• generate control signals configured to control a charging output of the DC-DC converter based on the input voltage Vin, the output voltage Vo, the estimated battery current value Iest, the current reference value Iref, and the control signals phase shift θ*.

A non-transitory computer-readable medium storing processor executable instructions that, when executed by one or more processors, cause the one or more processors to:

• generate an estimated battery current value Iest responsive to on an output voltage Vo of a DC-DC converter, and a current value I*, wherein the current value I* is one of received by a controller or determined from a voltage value V*;
• generate a current reference value Iref by combining the current value I* and the estimated battery current value Iest;
• generate a control signals phase shift θ* responsive to an input voltage Vin, the output voltage Vo, and a requested power value P*;
• and
• generate control signals configured to control a charging output of the DC-DC converter responsive to the input voltage Vin, the output voltage Vo, the estimated battery current value Iest, the current reference value Iref, and the control signals phase shift θ*.

A method, comprising:

• generating, by one or more processors coupled with memory, an estimated battery current value Iest based on an output voltage Vo of a DC-DC converter, and a current value I*, wherein the current value I* is one of received by a controller or determined from a voltage value V*;
• generating a current reference value Iref based on the current value I* and the estimated battery current value Iest;
• generating a control signals phase shift θ* based on an input voltage Vin, the output voltage Vo, and a requested power value P*;
• and
• generating control signals configured to control a charging output of the DC-DC converter based on the input voltage Vin, the output voltage Vo, the estimated battery current value Iest, the current reference value Iref, and the control signals phase shift θ*.