The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 2014
Filed:
Jun. 17, 2009
Ralf Koch, Freiensteinau, DE;
Juergen Schoettle, Markgroeningen, DE;
Marcus Bremmer, Benningen a. N., DE;
Jens Doeblitz, Stuttgart, DE;
Michael Wolf, Kornwestheim, DE;
Ralf Koch, Freiensteinau, DE;
Juergen Schoettle, Markgroeningen, DE;
Marcus Bremmer, Benningen a. N., DE;
Jens Doeblitz, Stuttgart, DE;
Michael Wolf, Kornwestheim, DE;
Vacuumschmelze GmbH & Co. KB, Hanau, DE;
Bosch GmbH, Stuttgart-Feuerback, DE;
Abstract
A method and an array for measuring a primary current in a primary conductor that is magnetically coupled to a secondary conductor via a ferromagnetic core. In said method, a voltage having a specific amplitude is applied to the secondary conductor such that a secondary current flows for reversing the magnetization of the ferromagnetic core; the secondary current is measured while the magnetization of the ferromagnetic core is reversed in order to obtain a first measured value; the polarity of the voltage is reversed such that a secondary current flows for once again reversing the magnetization of the ferromagnetic core; the secondary current is measured while the magnetization of the core is reversed in order to obtain a second measured value; the primary current is calculated in accordance with the first and the second measured value, the polarity of the voltage being regularly reversed at a certain sensor frequency that is continuously varied.