Patent · US Active

Current balancing of parallel connected semiconductor components

US8446206B2 · kind B2 · utility

4Cited by

4References

26Claims

0Family size

Assignee

ABB RESEARCH LTD. · CH

Inventors

Rodrigo Alonso Alvarez Valenzuela · Koblenzer Straße, DE
Karsten Fink · Werl, DE
Steffen Bernet · Dresden, DE
Antonio Coccia · Zürich, CH

Key dates

Filing date	Aug 23, 2011
Grant date	May 21, 2013
Priority date	—
Expiry date	Nov 28, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH03K17/12
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A method and an arrangement are provided for balancing the switching transient behavior of parallel connected power semiconductor components. The method includes providing a switch signal to the parallel connected power semiconductor components for changing the state of the components, forming control signals for each of the parallel connected components from the switch signal, and determining, during the change of state of the power semiconductor component, the voltage induced to an inductance in the main current path of the component in each of the parallel connected components. The method also includes comparing each of the induced voltages with a predetermined threshold voltage, measuring time differences between the time instants at which the induced voltages crosses the threshold voltage, and modifying one or more of the control signals on the basis of the measured time differences in the respective following state change for balancing the switching transient behavior.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.