US Patent:
20190286177, Sep 19, 2019
Inventors:
- Vienna, AT
Steven B. Pirko - Lake Milton OH, US
Assignee:
HOERBIGER KOMPRESSORTECHNIK HOLDING GMBH - Vienna
International Classification:
G05F 1/12
G01R 19/25
G01R 19/10
G01R 33/07
Abstract:
A circuit for controlling current flow to an associated inductive load is provided. The circuit includes a switching element having an open state and a closed state that intermittently connects an associated power supply to the inductive load when the switching element is in the closed state, a switch driver that generates a switch drive signal provided to a control element of the switch that controls the state of the switch to be the open state or the close state based on a desired load current set point and a feedback signal, a current sensor that measures a current flowing through the switching element and the load and generates a sensed current signal, and a summing circuit that adds a representation of the sensed current signal and a supplemental signal comprising a representation of the switch drive signal to generate the feedback signal.