US 12,253,574 B2 · Adaptive impedance tracking

Abstract

Current sharing in a power system having multiple PSUs comprises generating and supplying a first power and a second power to a load, and sensing a remote voltage value received by the load based on an accumulation of the first and second powers. The method further comprises determining, by the first PSU, local voltage and current values of the first power, a real impedance value of the first PSU based on the remote voltage value and the local voltage and current values of the first power, and a virtual impedance value of the first PSU based on the real impedance value of the first PSU and a reference impedance value. The method further comprises controlling generation of the first power by the first PSU based on the virtual impedance value of the first PSU.

Claims20

Dependent claims

A method for current sharing in a power system having multiple power supply units (PSUs), the method comprising:

generating a first power by a first PSU and supplying the first power to a load;
generating a second power by a second PSU and supplying the second power to the load;
sensing a remote voltage value received by the load based on an accumulation of the first power and the second power;
determining, by the first PSU:
a local voltage value of the first power;
a current value of the first power;
a real impedance value of the first PSU based on the remote voltage value, the local voltage value of the first power, and the current value of the first power;
and
a virtual impedance value of the first PSU based on the real impedance value of the first PSU and a reference impedance value;
and
controlling generation of the first power by the first PSU based on the virtual impedance value of the first PSU.

8 more elements

A power system comprising:

a first power supply unit (PSU) comprising:
a first power generation device;
and
a first controller configured to control the first power generation device to:
generate a first power;
and
supply the first power to a load;
a second PSU comprising:
a second power generation device;
and
a second controller configured to control the second power generation device to:
generate a second power;
and
supply the second power to the load;
wherein the load is configured to determine a received voltage value based on receiving the first power and the second power;
and
wherein the first controller is further configured to:
determine a voltage value and a current value of the first power;
determine a real impedance value of the first PSU based on the received voltage value and the voltage and current values of the first power;
determine a virtual impedance value of the first PSU based on the real impedance value and a reference impedance value;
and
control the first power generation device based on the virtual impedance value to generate the first power.

19 more elements

Dependencies are inferred from the claim text.

Adaptive impedance tracking

Life of this patent

Adaptive impedance tracking

Life of this patent

Abstract

Claims20