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:
Apr. 21, 2020
Filed:
Feb. 03, 2016
Siemens Aktiengesellschaft, München, DE;
Robert J. Nelson, Orlando, FL (US);
John D. Amos, Oviedo, FL (US);
SIEMENS AKTIENGESELLSCHAFT, München, DE;
Abstract
A wind turbine system () is connected to an electrical grid () by an inverter () that provides turbine terminal voltage (Vt) support to the grid during a grid low voltage fault that is concurrent with a lack of real power production from the generator () by providing reactive power to the grid. A processor () controls the inverter to preserve a minimum voltage on a local DC bus () by stopping the reactive power output when the DC bus voltage drops to a threshold value () that is above a low bus voltage trip setpoint (). An energy storage device () such as a battery may be connected to the DC bus to provide power that supports a prolonged ride-through capability during the grid fault.