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:
Jan. 16, 1990
Filed:
May. 11, 1989
Axel Steinshorn, Wittighausen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A method and apparatus to avoid commutation failure in a regenerative converter of a supply reversible converter of a voltage-source converter, in case of dynamic voltage depression. A firing control of the reversible converter is a function of the value of a link current setpoint of the voltage-source converter. The link current setpoint is determined from a measured link voltage actual value and from a determined link voltage setpoint. A measured link current actual value is monitored for overcurrent. Control signals are supplied to the reversible converter even when there is an overcurrent status message, when the reversible converter is switched over. The reversible converter of the voltage-source converter is thereby protected from commutation failure.