Patent ID: 9685853
Date: 2017-06-20
CPC Classifications: H02J,H02M,Y02B

Claim:
1. An absorption circuit for absorbing a power ripple, connected in parallel to an electrical equipment item powered by a power factor correction circuit, said absorption circuit being of voltage step-down type and comprising: a capacitor mounted in series with an inductor and at least one switch; a control module; measurement means for measuring a first current intended to power said electrical equipment item, the switch being controlled by the control module to vary the charging of the capacitor as a function of the ripple of the first current in order to attenuate the power ripple; and measurement means for measuring the voltage at the terminals of the capacitor, and the control module being configured to lock a second current passing through the capacitor in such a way that the voltage at the terminals of the capacitor remains within a predefined interval, wherein the control module comprises at least one limitation unit configured to limit the current flowing through the capacitor such that the voltage at the terminals of the capacitor remains less than or equal to a maximum value and/or greater than or equal to a minimum value.