Patent · US Active

Motor starter

US10253742B2 · kind B2 · utility

0Cited by

2References

17Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Dirk Hertz · Fichtenhof, DE
Stephan Jonas · Gerlingen, DE
Johann Seitz · Amberg, DE

Key dates

Filing date	Aug 6, 2013
Grant date	Apr 9, 2019
Priority date	—
Expiry date	Feb 27, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A motor starter includes a control unit and a first current path, via which energy can be supplied to a downstream electrical motor. The first current path includes a semiconductor switch and an electromechanical switch element, the semiconductor switch and the switch element being connected in series. In order to provide a cost-effective, safe motor starter, according to an embodiment of the invention the control unit is designed such that, in order to produce an energy supply via the first current path in a first step, it ensures that the voltage currently connected via the switch element, in respect of a previous opening of the switch element, lies below the allowable maximum blocking voltage of the semiconductor switch. Subsequently in a second step, the switch element first closes and then switches the semiconductor switch to be conductive.

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