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Method for realizing equivalence of magnetic field coil with non-integer number of turns by shunting

A magnetic field coil, non-integer technology, applied in the field of realization of effective non-integer turns winding

Active Publication Date: 2019-04-16
CSIC NO 710 RES & DEV INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But for metering standard devices, sometimes 0.01% deviation needs to be adjusted

Method used

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  • Method for realizing equivalence of magnetic field coil with non-integer number of turns by shunting
  • Method for realizing equivalence of magnetic field coil with non-integer number of turns by shunting
  • Method for realizing equivalence of magnetic field coil with non-integer number of turns by shunting

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Experimental program
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Embodiment Construction

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0014] This embodiment provides a method of shunting the equivalent non-integer turns of the magnetic field coil, by adding a shunt circuit to the calculated non-integer number of turns, so that the equivalent number of turns is the same as the theoretically designed non-integer number of turns Consistent, so as to ensure the uniformity of its magnetic field.

[0015] When the magnetic field coil is a combined coil including multiple windings, the shunt circuit is used to adjust the current passing through a single winding in the magnetic field coil, so that the actual effective number of turns of the winding is a non-integer number of optimal theoretical values. The specific implementation steps are as follows:

[0016] a) Calculate and design the magnetic field coil according to the conventional method, assuming that the number of turns of a...

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Abstract

The invention provides a method for realizing equivalence of a magnetic field coil with a non-integer number of turns by shunting. When a magnetic field coil is a multi-winding combined coil, a winding of which the theoretical value of the number of turns is non-integer is wound according to w0+1 turns. Then, a shunt circuit is connected in parallel to the winding, and the shunt circuit is used toadjust the current passing through the winding so that the equivalent turn number of the winding is the best theoretical non-integer, and finally, best uniformity of the magnetic field coil is achieved.

Description

technical field [0001] The invention relates to a realization technology of an equivalent non-integer turn winding of a magnetic field coil, belonging to the technical field of magnetic field coils. Background technique [0002] In the weak magnetic field metrology test technology and its application research, the use of magnetic field coils is generally inseparable. The core technical index of the magnetic field coil is the uniformity of the magnetic field in a certain uniform area. In order to increase the homogeneity of the magnetic field, combined coils with several windings are often designed. According to the requirements of the best uniformity, mathematically, the best theoretical solutions such as the size, spacing, and number of turns of each winding of the combined coil can be obtained. This optimal theoretical parameter is generally non-integer. For the size and spacing of the coils, non-integer numbers are mechanically easier to guarantee. As for the number o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F5/00
CPCH01F5/00
Inventor 程华富翟晶晶李享姜浩王芬
Owner CSIC NO 710 RES & DEV INST