Method, device and system for measuring iron loss of rotor of doubly-fed wind-driven generator
A technology of wind turbine and rotor iron loss, which is applied in measuring devices, motor generator testing, dielectric performance measurement, etc., and can solve the problem that the rotor iron loss cannot be measured
Inactive Publication Date: 2019-11-12
CSR ZHUZHOU ELECTRIC CO LTD
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[0004] In view of this, the embodiment of the present invention provides a method for measuring the rotor iron loss of a doubly-fed wind power generator, which solves the problem that the existing doubly-fed wind power generator rotor iron loss cannot be measured
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[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0049] In this application, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes none. other elements specifically listed, or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "com...
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The invention provides a method for measuring the iron loss of a rotor of a doubly-fed wind-driven generator. The method comprises the following steps of separating a stator from the rotor of the doubly-fed wind-driven generator, and enabling a rotating shaft of the doubly-fed wind-driven generator to be in a still state; supplying electricity to the rotor of the doubly-fed wind-driven generator;measuring the input power of the rotor and the current of the rotator; measuring the direct current resistance of the rotor; and determining the iron loss of the rotor according to the input power, the current and the direct current resistance of the rotor. According to the method for measuring the iron loss of the rotor of the doubly-fed wind-driven generator provided by the embodiment, firstly,the stator and the rotor of the doubly-fed wind-driven generator are separated; the rotating shaft of the doubly-fed wind-driven generator is enabled to be in the still state; after the electricity issupplied to the rotor, the self practical parameters of the rotor are measured; and then, the iron loss of the rotor is determined by combining with the practical parameters of the rotor. The methodprovided by the embodiment of the invention has the advantages that in the process of determining the iron loss of the rotor, all collected parameters are the practical parameters of the rotor, so that the measurement is more accurate.
Description
technical field [0001] The invention relates to the field of wind power generators, in particular to a method, device and system for measuring iron loss of a doubly-fed wind power generator rotor. Background technique [0002] With the development of wind power generation technology, wind power generating sets for wind power generation have been widely used. Doubly-fed wind turbine, as a wound induction generator, is the core component of wind turbines. The double-fed wind turbine is mainly composed of two parts: the motor body and the cooling system, in which the motor body is composed of a stator, a rotor and a bearing system. During the working process of the double-fed wind turbine, the various components of the double-fed wind turbine will have different degrees of loss. The loss of these components is directly related to whether the working state of the double-fed wind turbine is stable. Take measurements to ensure that the doubly-fed wind turbine is in a stable work...
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IPC IPC(8): G01R31/34G01R27/26
CPCG01R31/346G01R27/2694
Inventor 况金园王媛胡锐王环宇
Owner CSR ZHUZHOU ELECTRIC CO LTD