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:
Nov. 28, 1989
Filed:
Aug. 11, 1988
Wolfgang Kaufhold, Erlangen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
In the rectifier station (GR), the reference d-c current (J.sub.w) is automatically formed from the differences of a reference current-dependent control angle function and the current controller-dependent control angle (A) on the rectifier side, where the actual d-c current (J.sub.d) is termined by the power-dependent bucking voltage in the inverter state (WR), and that in the latter the difference of the actual d-c current (J.sub.d) and a reference d-c current obtained from the reference power (P.sub.W) through division by the actual d-c voltage (U.sub.d) influences a controller which sets the reference d-c current for the voltage controller (UR) in the inverter station (WR).