Ripple suppression inductor and DC power supply circuit

A technology of ripple suppression and inductance, which is applied in the direction of circuits, inductors, fixed inductors, etc., can solve the problems of low reliability and achieve the effect of improving reliability, avoiding reduction, and improving suppression effect

Inactive Publication Date: 2020-05-08
SHENZHEN POWER SUPPLY BUREAU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a ripple suppression inductor and a DC power supply circuit for the low reliability of the traditional ripple suppression inductor

Method used

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  • Ripple suppression inductor and DC power supply circuit
  • Ripple suppression inductor and DC power supply circuit
  • Ripple suppression inductor and DC power supply circuit

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described more comprehensively through the following embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] In one embodiment, a ripple suppression inductor is provided, see figure 1 , including a conductive circuit 200, a magnetic part 100 and a compensation coil 300, the ends of the magnetic part 100 are connected to form a ring structure with an opening, the conductive circuit 200 is passed through the opening, and the compensation coil 300 is arranged around the magnetic part 100, the conductive circuit 200 is used to transmit direct current, and the compensation coil 300 is used to access compensation current. After the compensation coil 300 is connected to the compensatio...

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PUM

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Abstract

The invention relates to a ripple suppression inductor and a direct-current power supply circuit. The inductor comprises a conducting circuit, a magnetic part and a compensation coil, the head end andthe tail end of the magnetic part are connected to form an annular structure with an opening in an enclosing mode, the conducting circuit penetrates through the opening, the compensation coil is arranged around the magnetic part, the conducting circuit is used for transmitting direct currents, and the compensation coil is used for connecting compensation currents. According to the ripple suppression inductor and the direct-current power supply circuit, a magnetic field generated after the compensation current passes through the compensation coil is counteracted with a magnetic field generatedby the current in the conducting circuit in the magnetic part; the influence of direct current in the conducting circuit on the magnetic field of the magnetic part is reduced; in this way, the current passing through the magnetic part is only ripple current, due to the fact that the ripple current amplitude is small and is the alternating current with the polarity changing positively and negatively, the magnetic conductivity of the magnetic part can be prevented from being reduced due to magnetic bias, the ripple suppression inductor has the large inductance value, the ripple current suppression effect of the ripple suppression inductor is improved, and the use reliability is improved.

Description

technical field [0001] The present application relates to the technical field of power electronics, in particular to a ripple suppression inductor and a DC power supply circuit. Background technique [0002] There are generally a large number of DC-DC converters in the DC power supply system. Due to the existence of the switching circuit, a ripple current will be formed in the circuit. The magnitude of the ripple current may have an adverse effect on the operation of the DC power equipment and system, and necessary measures need to be taken Effective suppression of ripple current. Ripple suppression inductors are usually connected in series in the DC power supply system, which can suppress the ripple current generated in the DC power supply system and improve the current quality. [0003] When traditional ripple suppression inductors are used in low-voltage and high-current applications, especially for high-power converters, the DC current flowing through the inductor will ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/14H01F17/06H02M3/00
CPCH01F17/062H01F2017/065H02M1/143H02M3/00
Inventor 王静赵宇明刘国伟童亦斌
Owner SHENZHEN POWER SUPPLY BUREAU
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