Patent · US Active

Diagnosable soft starter, diagnostic method, and motor arrangement

US11374527B2 · kind B2 · utility

0Cited by

3References

12Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Dirk Hertz · Fichtenhof, DE
Johann Seitz · Amberg, DE

Key dates

Filing date	May 2, 2018
Grant date	Jun 28, 2022
Priority date	—
Expiry date	Feb 10, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH02P27/08
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A soft starter includes a plurality of live phases, wherein a semiconductor switching element and an electromechanical switch parallel-connected thereto are arranged in each phase. In the soft starter, on a load-facing side of the semiconductor switching elements and of the electromechanical switches, the plurality of phases are connected in a circuit forming a star point. The star point circuit includes at least one passive component and is configured for detecting a reduced voltage drop in a defective state of a semiconductor switching element and/or of an electromechanical switch.

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