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Method for calculating deflection angle corresponding to maximum coil mutual inductance on spatial scale

A calculation method and a technology of spatial scale, applied in the field of MCR-WPT, can solve the problems of spatial position arrangement of restraint coils and affecting the flexibility of wireless power transmission, etc.

Active Publication Date: 2020-06-19
JIANGSU UNIV
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Problems solved by technology

However, the fixed symmetric model constrains the spatial position of the coil, which affects the flexibility of wireless power transmission

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  • Method for calculating deflection angle corresponding to maximum coil mutual inductance on spatial scale
  • Method for calculating deflection angle corresponding to maximum coil mutual inductance on spatial scale
  • Method for calculating deflection angle corresponding to maximum coil mutual inductance on spatial scale

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Embodiment Construction

[0062] Through the following specific examples, those skilled in the art can understand other advantages and effects of the present invention from the content described in this specification. The present invention can also be applied in other different specific implementation modes, and the detailed viewpoints in this specification can also be applied in other different modes. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0063] The embodiment is only an illustration, not a real picture; in order to better illustrate the embodiment of the present invention, there will be parts that are enlarged or reduced, and do not represent the actual size of the product; for those skilled in the art, some structures in the drawings It is understandable that...

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Abstract

The invention discloses a method for calculating a deflection angle corresponding to maximum coil mutual inductance on a spatial scale, and belongs to the technical field of wireless power transmission. According to the method, a spiral coil with a circular section is used as an analysis object, model space parameters are reduced in a coordinate rotation transformation mode, and directional pitching analysis is carried out on a secondary coil in a space range. In the aspect of mutual inductance formula calculation, a mutual inductance calculation formula of a coupling coil at a spatial position is derived by adopting an optimization method of a Taylor series expansion formula according to a Neumann electromagnetic theory. An analysis result shows that when a transmitting coil is fixed at an original point and a receiving coil is located at any spatial position, a unique pitching deflection angle can be always found such that the mutual inductance between the coupling coils is in a maximum state. Moreover, under the condition that the parameters of the coil are known, a specific equation relation exists between a pitching rotation angle and the spatial position of the primary centerof the secondary coil. According to the method, the deflection angle corresponding to the optimal mutual inductance of a model can be effectively calculated through the formula.

Description

technical field [0001] The invention belongs to the technical field of MCR-WPT (magnetic coupled resonant wireless power transfer, magnetically coupled resonant wireless power transfer), and relates to a method for calculating the deflection angle corresponding to the maximum coil mutual inductance on a spatial scale. Background technique [0002] Wireless power transmission is widely used in fields such as electric vehicles, medical implants, and smart grids due to its advantages of safety, convenience, and flexibility. Traditional research on wireless power transfer pays more attention to the ideal symmetrical state of the magnetic coupling coil. Compared with the spatial scale position state, the mutual inductance generated by the symmetrical state is higher, and the coupling coefficient between the coils meets the research requirements. However, the fixed symmetric model constrains the spatial position of the coil, which affects the flexibility of wireless power transmis...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/90H02J50/10
CPCH02J50/90H02J50/10
Inventor 闫小喜陈雪松赵振洲薛夏
Owner JIANGSU UNIV
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