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A resonance-based magnetic field generator and its design method

A magnetic field generator and magnetic field technology, applied in the field of resonance-based magnetic field generators and high-efficiency magnetic field generators, to achieve low harmonic distortion, improved conversion efficiency, and low noise

Active Publication Date: 2017-06-16
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its purpose is to greatly improve the conversion efficiency of electricity to magnetism, thereby solving the problem of low noise and low harmonic magnetic field generation

Method used

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  • A resonance-based magnetic field generator and its design method
  • A resonance-based magnetic field generator and its design method
  • A resonance-based magnetic field generator and its design method

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0035] like figure 1 Shown is a schematic structural diagram of a commonly used magnetic field generating device. The most common way to generate an alternating magnetic field is to pass an alternating current to the magnetic field generating coil. figure 1 The industrial computer controls the data acquisition card to output the excitation waveform output, and after passing through the power a...

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Abstract

The invention discloses a resonance-based magnetic field generating device and its design method. Compared with common magnetic field generating devices, its main innovation lies in greatly improving the conversion efficiency from electricity to magnetism, and realizing low noise and low harmonic magnetic field. produce. After determining the specifications of the magnetic field generating coil and the current-sensing resistor, calculate their series impedance Z at the operating frequency f L ;Using the series impedance Z L Estimated resonance current ratio I ratio The maximum value; according to the desired resonant current ratio I ratio , filter cutoff frequency f 1 , f 2 , the filter parameters are derived from the passband ripple; finally, the magnetic field generating device is assembled and debugged.

Description

technical field [0001] The invention belongs to the technical field of magnetic field generation, and more specifically, relates to a resonance-based magnetic field generator, and more specifically, relates to a high-efficiency magnetic field generator based on the resonance principle, which is used to generate a single-frequency magnetic field with a high signal-to-noise ratio . Background technique [0002] The magnetic phenomenon is one of the earliest physical phenomena recognized by human beings. The compass, one of the four great inventions in ancient China, uses the magnetic needle to be affected by the magnetic field force in the geomagnetic field to distinguish the direction. In modern times, a series of revolutionary discoveries made people realize the close connection between electricity and magnetism, and realized the mutual conversion between electricity and magnetism by using the mastered laws. [0003] Magnetic fields are more and more widely used in producti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/12
Inventor 刘文中杨明钟景蒋玲
Owner HUAZHONG UNIV OF SCI & TECH
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