公开(公告)号：WO2022268294A1

公开(公告)日：2022-12-29

申请号：PCT/EP2021/066943

申请日：2021-06-22

Applicant: ABB SCHWEIZ AG

Inventor： VANCU, Florian ,  FUEGLISTER, Markus

IPC: H02H7/125 ,  H02H9/00 ,  H02H9/02 ,  H02H7/1252 ,  H02H9/001 ,  H02H9/025

Abstract: The invention relates to an inrush current limiter circuit (102, 104, 105) for a rectifier (100), wherein the inrush current limiter circuit provides a flow of a current between a rectifying part (101) of the rectifier (100) and a filter capacitance (109), comprising a power stage (105); wherein the power stage (105) comprises a power stage resistor (108) and a power stage transistor (107) parallel to the power stage resistor (108), wherein the power stage resistor (108) is configured to conduct an amount of the current in dependence on the state of the power stage transistor (107), and wherein the power stage transistor (107) is configured to conduct an amount of the current in dependence on a charging of a gate capacitance of the power stage transistor (107).

公开(公告)号：WO2022269378A1

公开(公告)日：2022-12-29

申请号：PCT/IB2022/054185

申请日：2022-05-05

Applicant: ABB SCHWEIZ AG

Inventor： VANCU, Florian ,  FUEGLISTER, Markus

IPC: H02P6/32 ,  H02M3/00 ,  H02P25/022

Abstract: The present invention discloses a system for controlling an inductor freewheeling voltage comprising a first switch, a second switch, a first diode, an inductor. The first switch is connected such that, in open state, it will connect a first terminal of the inductor with a power bus and that the first switch is controlled by a first control signal. A first terminal of the first diode is connected to a ground, and a second terminal of the first diode is connected to the first terminal of the inductor. The first diode is connected such that it allows an electric current to pass from the ground to the first terminal of the inductor. The second switch connected such that, in open state, it will connect a second terminal of the inductor with the ground. The system further comprises a switch control circuit, which is configured to be controlled with a second control signal, delivered to an input terminal of the switch control circuit, such that in a first state of the second control signal the switch control circuit keeps the second switch open and in a second state of the second control signal the switch control circuit keeps the second switch such that there is a voltage drop across the second switch.