Asymmetrical three-branch concentrated wave winding connection method

A winding connection and concentrated wave technology, applied in the field of AC windings, can solve problems such as poor technical and economic indicators of power station systems, unreasonable motor performance and structure, unreasonable performance of motors, etc., to facilitate installation and binding, and improve technology Economical, simple and convenient wiring

Active Publication Date: 2018-11-27
HARBIN ELECTRIC MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the increase of capacity, the contradiction between capacity, voltage and rotational speed becomes more prominent, which brings difficulties to motor design, unreasonable motor performance and structure, and poor technical and economic indicators of power station system.
In the past, the solution was to either give up the superior performance of the turbine at this speed and use other speed turbines, or accept the unreasonable performance of the motor, which is expensive

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  • Asymmetrical three-branch concentrated wave winding connection method
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  • Asymmetrical three-branch concentrated wave winding connection method

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Embodiment Construction

[0020] The specific embodiments of the present invention are described as follows so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0021] The invention discloses an asymmetrical three-branch concentrated wave winding connection method, which is characterized in that: the number of pole pairs p of the winding is an odd number, that is, p=2m+1, the number of slots per pole and phase is 3n, and m is zero or arbitrary positive integer, n is any positive integer; the distribution of each phase winding is the same, that is: each phase winding contains two phase belts, each phase belt is composed of three-half parallel b...

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Abstract

The invention discloses an asymmetrical three-branch concentrated wave winding connection method. The number of pole pairs of windings is an odd number; the number of slots in each pole of each phaseis 3n; n is an arbitrary positive integer; distribution rules of windings in each phase are same; namely, the winding of each phase comprises two phase belts; each phase belt is formed by one and a half parallel branch windings; distribution rules of windings in each branch are same to form symmetric windings of asymmetrical branches. The asymmetrical three-branch concentrated wave winding connection method breaks the limitation of traditional alternating-current winding theory and provides an asymmetrical three-branch concentrated wave winding connection method for a motor with odd pole pairs; the conflict that capacities, voltage and rotation rates of a large pumped-hydro energy storage motor and a hydraulic turbine generator are not matched is effectively solved; the performance of themotor is improved, so that the motor is reasonable in structure, excellent in manufacturability and mountability, simple to maintain and reliable in operation; the technical and economical indexes ofa power plant system are improved.

Description

technical field [0001] The invention relates to the field of AC windings, in particular to an asymmetrical three-branch concentrated wave winding connection method. Background technique [0002] The stator winding is an important part to realize electromechanical energy conversion, which directly affects the performance of the motor. According to the statistics of hydro-generators put into operation, there are relatively few hydro-generators with an odd number of pole pairs, and the capacity is also small. The limit on the number of selected branches. According to the theory of motor windings, the number of parallel branches of the stator windings of hydroelectric generators with an odd number of pole pairs is either too few or too many, and there are no four-branch windings, or even three-branch windings. A big reason for fewer generators. However, as the capacity increases, the contradiction between capacity, voltage and rotational speed will become more prominent, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/28
CPCH02K3/28H02K2213/03
Inventor 毕纯辉李金香李桂芬王亮杨明王韬宋敏慧
Owner HARBIN ELECTRIC MASCH CO LTD
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