Patent · US Active

Method and circuit assembly for current control in 3-phase motors

US8952643B2 · kind B2 · utility

0Cited by

5References

13Claims

0Family size

Assignee

TRINAMIC MOTION CONTROL GMBH & CO. KG · DE

Inventors

Lars Larsson · Hamburg, DE
Bernhard Dwersteg · Hamburg, DE

Key dates

Filing date	Jul 18, 2011
Grant date	Feb 10, 2015
Priority date	—
Expiry date	Dec 30, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH02P8/12
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method and circuit assembly are provided for controlling the motor current in an electric 3-phase motor, in particular in a 3-phase stepper motor, by a chopper process. For at least two of the three motor connections a respective chopper phase is cyclically activated, while a target motor current supplied for the motor connection in question is injected into the motor connection by a chopper process, while the two other motor connections are connected to each other.

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