Patent ID: 9632121
Date: 2017-04-25
CPC Classifications: G01R,H02M

Claim:
1. An electronic power converter, the converter being capable of: (A) in a first operative mode, transferring energy by, receiving electrical voltage and/or current magnitudes from a first device as input, processing the electrical magnitudes using a processing means capable of measuring the electrical magnitudes and servocontrolling the electrical magnitudes based on the measurements and constraints specific to a second device, and providing the adapted voltage and/or current magnitudes to the second device as output; (B) in a first state of a second operative mode, measuring impedance of an energy source (S) between the first and second devices by: (C) in a second state of the second operative mode, exciting the energy source by injecting alternating current at least at one fixed excitation frequency, the alternating current being superimposed on the determined imposed direct current; the processing means being also capable of measuring successive current and voltage values across the terminals of the energy source following the excitation at the excitation frequency, after offsetting the current values and voltage values as a function, respectively, of the determined current offset value and the determined voltage offset value; and the electronic power converter further comprising a means for determining the impedance of the energy source at the fixed excitation frequency, as a function of the current and voltage values successively measured.