Ultrahigh-voltage multiphase permanent magnet wind driven generator and power generation system
A technology for wind power generation systems and wind power generators, applied in wind power generation, synchronous motors with stationary armatures and rotating magnets, electrical components, etc., which can solve the problem of large number of power conversion stages and low output voltage of wind power generator systems , poor fault tolerance and other issues, to achieve the effect of saving the transformer, minimizing the influence of torque ripple, and improving efficiency
Active Publication Date: 2022-04-01
XI AN JIAOTONG UNIV
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Problems solved by technology
[0008] The purpose of the present invention is to provide an ultra-high voltage multi-phase permanent magnet wind generator and power generation system to solve the problem of low output terminal voltage of existing wind generators , poor fault tolerance performance, high calorific value, high loss, one or more of the technical problems of the wind turbine system with many power conversion stages, high construction costs, efficiency and reliability to be improved
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[0039] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0040] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...
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The invention discloses an ultrahigh-voltage multi-phase permanent magnet wind driven generator and a power generation system, and the ultrahigh-voltage multi-phase permanent magnet wind driven generator comprises a rotor which is used for generating a rotating excitation magnetic field; the stator is used for electromechanical energy conversion of the motor; the stator comprises a stator iron core and an armature winding arranged on the stator iron core; wherein the armature winding is used for cutting an excitation magnetic field generated by the rotor to generate induced electromotive force; the armature winding is a multi-phase fractional-slot concentrated winding, and a preformed structure is adopted to improve the insulation and voltage resistance level. The preformed structure is formed by wrapping a winding which is wound in advance with an insulating layer and a shielding layer. The technical problems that an existing wind driven generator is low in output end voltage, poor in fault-tolerant performance, high in calorific value and high in loss, the number of power conversion stages of a wind driven generator system is large, the construction cost is high, and efficiency and reliability need to be improved can be solved.
Description
technical field [0001] The invention belongs to the technical field of wind power generation, in particular to an ultra-high voltage multi-phase permanent magnet wind power generator and a power generation system. Background technique [0002] In existing studies, wind turbines with a power level of 10MW and above generally use a medium-voltage (for example, the output voltage of a 10MW three-phase wind turbine is 3kV or 6.6kV) three-phase permanent magnet synchronous generator (PMSG ), they realize variable speed and constant frequency control through back-to-back medium-voltage full-power converter groups, and then connect to light-duty high-voltage direct current transmission (HVDC) grid (<300kV) for power transmission through step-up transformers and centralized high-voltage direct current transmission converter stations , the onshore converter station is connected to the AC grid after inversion. This solution requires at least three voltage levels of power conversion...
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Patent Timeline
Login to View More IPC IPC(8): H02K1/16H02K3/30H02K3/34H02K21/14H02M7/217H02H7/06
CPCY02E10/76Y02E10/72
Inventor 曾翔君王鹏昭骆一萍刘寅迪唐若晨
Owner XI AN JIAOTONG UNIV