Patent ID: 7615989
Filing Date: 2009-11-10
Classification: G01R

Abstract:
1. An integrated current sensor for use in a DC electric power system, said current sensor comprising: a DC inductor including a resistive component and an inductive component, wherein a DC current passes through said DC inductor; an integrator circuit, said integrator circuit receiving a voltage associated with said DC inductor; a feedback system operationally connected to said DC inductor and to said integrator circuit, said feedback system subtracting a voltage associated with said resistive component and obtaining a voltage associated with said inductive component; a signal conditioning unit operationally connected to said DC inductor, said signal conditioning unit digitizing a second voltage proportional to a first voltage associated with said DC inductor, and outputting a third voltage; and a data processing unit in inputting said third voltage, wherein said data processing unit outputs at least one signal for parameter variation compensation, control, protection, or Prognostics Health Monitoring.