The company introduced the production technology of 1.5mw~2.0mw doubly-fed asynchronous wind turbine generator from Germany vem company. The design of this series of products is rigorous, and the process guarantee measures are strict; the box structure and air-to-air cooling mode are adopted; the...
Simultaneously, in the testing system, only the 60Hz doubly-fed asynchronous generator and the converter (the second DC/AC converter) on the side of the generator relate to 60Hz electric energy, and influence on other parts in the testing system is little, so that the testing system is ...
The doubly-fed system, with a standard high speed drivetrain, enables small generator size and high system efficiency at nominal speed, and satisfies basic grid code requirements.
The invention provides a method for improving the reactive power output capacity under a system fault of a doubly-fed asynchronous generator. The method comprises the following steps that firstly, when over-current occurs on a wind turbine generator rotor of the doubly-fed asynchronous generator, ...
This paper investigates the high-frequency properties of a 3.14-MVA 35/1.0/0.4-kV wind turbine transformer commonly used for the doubly fed asynchronous generator. Frequency sweep measurements carried out for this transformer show that the voltage transfer from the 35-kV side to either of the two...
At present,the AC-excited variable speed constant frequency wind turbines have become the dominating type.Variable speed constant frequency of wind turbine generator is mostly used doubly-fed asynchronous generator.This paper first described working principle of doubly-fed induction wind turbine,and establ...
Method for operating a wind energy plant having a doubly-fed asynchronous machine, a grid-sided converter and a generator-sided converter both being controlled by a control means, the method comprising the following steps: in a regular o... T Schubert,U Bellgardt - US 被引量: 14发表: 2011...
asynchronous speed (a four-pole generator operating in a 60Hz grid has a synchronous speed of[translate] ais the doubly fed induction generator (DFIG). The DFIG is often used in variable-speed[translate]
Doubly-fed asynchronous wind generating set low voltage cross-over device based on DVRdoi:CN203574375 UThe utility model relates to a doubly-fed asynchronous wind generating set low voltage cross-over device based on a DVR. The doubly-fed asynchronous wind generating set low voltage cross-over ...
An electric power generator system or a motor comprising a doubly-fed asynchronous generator or motor comprising a stator and a rotor, a transformer having a first winding and a second winding, the first winding having a first end and a second end; and wherein the stator and the transformer...