Patent · US Active

Method for slowing-down control of an asynchronous machine

US8466640B2 · kind B2 · utility

1Cited by

8References

15Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Dirk Hertz · Fichtenhof, DE
Diethard Runggaldier · Stegaurach, DE
Stefan Zitzler · Schwandorf, DE

Key dates

Filing date	Aug 12, 2008
Grant date	Jun 18, 2013
Priority date	—
Expiry date	Mar 15, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH02P3/24
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method is disclosed for slowing-down control of an asynchronous machine, wherein the value of a start energy is determined and stored while the asynchronous machine is being run up from being stationary to the operating rotation speed. The asynchronous machine is braked, in the reversing mode, with braking energy which corresponds to the start energy multiplied by a correction factor wherein the correction factor assumes a value between 0 and 1. In at least one embodiment, the asynchronous machine is braked further by DC braking after braking has been carried out in the reversing mode.

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