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CN-122025383-A - Integrated magnetic element, power factor correction circuit and air conditioner

CN122025383ACN 122025383 ACN122025383 ACN 122025383ACN-122025383-A

Abstract

The invention discloses an integrated magnetic element, a power factor correction circuit and an air conditioner, wherein the integrated magnetic element comprises a first magnet and a second magnet, a plurality of magnetic columns and a capacitor, wherein the magnetic columns are arranged between the first magnet and the second magnet and are connected with the first magnet and the second magnet, each magnetic column is wound with a coil, a first port, a second port and a third port are led out of the coil, the first port, the second port and the third port are used for connecting the integrated magnetic element with an external circuit, when the integrated magnetic element is used in a PFC circuit, the first port can be connected with a three-phase power supply port of the PFC circuit, the third port can be connected with the PFC module, and the second port can be connected with the capacitor, so that an LCL filter structure can be formed, the current ripple effect can be effectively restrained, the current ripple restraining effect of the power factor correction circuit can be effectively improved, and the equipment cost can be reduced.

Inventors

  • LI NING
  • YAN XIAOJUN
  • LONG TAN

Assignees

  • 佛山市顺德区美的电子科技有限公司
  • 广东美的制冷设备有限公司

Dates

Publication Date
20260512
Application Date
20241112

Claims (17)

  1. 1. An integrated magnetic component, comprising: a first magnet and a second magnet; The magnetic columns are arranged between the first magnet and the second magnet and are connected with the first magnet and the second magnet; Each magnetic column is wound with a coil, a first port, a second port and a third port are led out of the coil, and the first port, the second port and the third port are used for connecting the integrated magnetic element with an external circuit.
  2. 2. The integrated magnetic component of claim 1, wherein the coil comprises a first sub-coil and a second sub-coil, the first port and the second port being routed from the first sub-coil, the third port being routed from the second sub-coil, the second sub-coil further being routed a fourth port for connection to the external circuit after connection to the second port.
  3. 3. An integrated magnetic component as recited in claim 2, wherein: The turns of the first sub-coil and the second sub-coil are the same, and the winding directions of the first sub-coil and the second sub-coil are the same; Or the turns of the first sub-coil and the second sub-coil are the same, and the winding directions of the first sub-coil and the second sub-coil are different; or the turns of the first sub-coil and the second sub-coil are different, and the winding directions of the first sub-coil and the second sub-coil are the same; Or the number of turns of the first sub-coil and the second sub-coil are different, and the winding directions of the first sub-coil and the second sub-coil are different.
  4. 4. An integrated magnetic component as recited in claim 1, wherein: The number of turns of the coil between the first port and the second port is the same as the number of turns of the coil between the second port and the third port, and the winding direction of the coil between the first port and the second port is the same as the winding direction of the coil between the second port and the third port; Or the number of turns of the coil between the first port and the second port is the same as the number of turns of the coil between the second port and the third port, the winding direction of the coil between the first port and the second port is different from the winding direction of the coil between the second port and the third port; Or the number of turns of the coil between the first port and the second port is different from the number of turns of the coil between the second port and the third port, and the winding direction of the coil between the first port and the second port is the same as the winding direction of the coil between the second port and the third port; or the number of turns of the coil between the first port and the second port is the same as the number of turns of the coil between the second port and the third port, and the winding direction of the coil between the first port and the second port is the same as the winding direction of the coil between the second port and the third port.
  5. 5. The integrated magnetic component of any of claims 1 to 4, wherein the number of magnetic pillars is three, the three magnetic pillars being arranged in a delta-shape.
  6. 6. An integrated magnetic component, comprising: a first magnet and a second magnet; The magnetic columns are arranged between the first magnet and the second magnet and are connected with the first magnet and the second magnet; Each magnetic column is wound with a coil, a first port, a second port and a third port are led out of the coil, the second port of each coil is connected with a first capacitor, each first capacitor is connected with a first interface, and the first port, the first interface and the third port are used for connecting the integrated magnetic element with an external circuit.
  7. 7. The integrated magnetic component of claim 6, wherein the coil comprises a first sub-coil and a second sub-coil, the first port and the second port being routed from the first sub-coil, the third port being routed from the second sub-coil, the second sub-coil further being routed a fourth port; The fourth port of each second sub-coil is connected with a second capacitor, each second capacitor is connected with a second interface, and the first interface and the second interface corresponding to the same coil are used for being connected with an external circuit after being connected with each other.
  8. 8. The integrated magnetic component of claim 7, wherein: The turns of the first sub-coil and the second sub-coil are the same, and the winding directions of the first sub-coil and the second sub-coil are the same; Or the turns of the first sub-coil and the second sub-coil are the same, and the winding directions of the first sub-coil and the second sub-coil are different; or the turns of the first sub-coil and the second sub-coil are different, and the winding directions of the first sub-coil and the second sub-coil are the same; Or the number of turns of the first sub-coil and the second sub-coil are different, and the winding directions of the first sub-coil and the second sub-coil are different.
  9. 9. The integrated magnetic component of claim 6, wherein: The number of turns of the coil between the first port and the second port is the same as the number of turns of the coil between the second port and the third port, and the winding direction of the coil between the first port and the second port is the same as the winding direction of the coil between the second port and the third port; Or the number of turns of the coil between the first port and the second port is the same as the number of turns of the coil between the second port and the third port, the winding direction of the coil between the first port and the second port is different from the winding direction of the coil between the second port and the third port; Or the number of turns of the coil between the first port and the second port is different from the number of turns of the coil between the second port and the third port, and the winding direction of the coil between the first port and the second port is the same as the winding direction of the coil between the second port and the third port; Or the number of turns of the coil between the first port and the second port is different from the number of turns of the coil between the second port and the third port, and the winding direction of the coil between the first port and the second port is different from the winding direction of the coil between the second port and the third port.
  10. 10. An integrated magnetic component as claimed in any one of claims 6 to 9, wherein the number of magnetic pillars is three, the three magnetic pillars being arranged in a delta-shape.
  11. 11. A power factor correction circuit comprising an integrated magnetic component as claimed in any of claims 1 to 5.
  12. 12. The power factor correction circuit of claim 11, further comprising a rectifying module, a capacitor module, and a three-phase power port for connecting to a three-phase power source, wherein the first port is connected to the three-phase power port, the second port is connected to the capacitor module, and the third port is connected to the rectifying module.
  13. 13. A power factor correction circuit comprising an integrated magnetic component as claimed in any of claims 6 to 10.
  14. 14. The power factor correction circuit of claim 13, further comprising a rectifying module and a three-phase power supply port for connecting a three-phase power supply, wherein the first port is connected to the three-phase power supply port, wherein different first interfaces are connected to each other, and wherein the third port is connected to the rectifying module.
  15. 15. The pfc circuit of claim 14 wherein different ones of the first interfaces are connected to a reference ground after being connected to each other.
  16. 16. The power factor correction circuit of claim 13, further comprising a rectifying module, a capacitor module, and a three-phase power port for connecting to a three-phase power source, the first port being connected to the three-phase power port, the first interface being connected to the capacitor module, the third port being connected to the rectifying module.
  17. 17. An air conditioner comprising the integrated magnetic element of any one of claims 1 to 10 or comprising the power factor correction circuit of any one of claims 11 to 16.

Description

Integrated magnetic element, power factor correction circuit and air conditioner Technical Field The present invention relates to the field of air conditioners, and more particularly, to an integrated magnetic device, a power factor correction circuit, and an air conditioner. Background In a main control board of an air conditioner, a power factor correction (Power Factor Correction, PFC) circuit is commonly used to suppress current ripple. The basic structure of the PFC circuit generally includes three-phase ac inputs, each of which is connected to a PFC inductor, then to a PFC module, and finally to a dc bus capacitor. However, the conventional PFC inductor design is usually a single inductor structure, so that there is no additional filtering measure between the inductor and the PFC module, and the effect is poor in suppressing the current ripple, so that the PFC inductor with a larger inductance value and the bus capacitor with a larger capacity must be used to maintain the stable operation of the system, and the equipment cost is increased. Disclosure of Invention The invention aims to at least solve one of the technical problems in the prior art, and provides an integrated magnetic element, a power factor correction circuit and an air conditioner, which can effectively improve the current ripple suppression effect of the power factor correction circuit and reduce the equipment cost. In a first aspect, an embodiment of the invention provides an integrated magnetic element, which comprises a first magnet and a second magnet, and a plurality of magnetic columns, wherein the magnetic columns are arranged between the first magnet and the second magnet and are connected with the first magnet and the second magnet, each magnetic column is wound with a coil, a first port, a second port and a third port are led out of the coil, and the first port, the second port and the third port are used for connecting the integrated magnetic element with an external circuit. The integrated magnetic element provided by the embodiment of the invention at least has the beneficial effects that the integrated magnetic element comprises an upper magnet, a lower magnet and a plurality of magnetic columns positioned between the upper magnet and the lower magnet, each magnetic column is wound with a coil, each coil is led out of three ports (a first port, a second port and a third port), and the three ports can be used for connecting the integrated magnetic element with an external circuit. In this way, when the integrated magnetic element is used in the PFC circuit, the first port may be connected to a three-phase power supply port of the PFC circuit, the third port may be connected to the PFC module, and the second port may be connected to one capacitor. Moreover, since the integrated magnetic element can form an LCL filter structure with an external capacitor, the integrated magnetic element itself can use a smaller inductance value, thereby effectively reducing the equipment cost. In some embodiments, the coil includes a first sub-coil and a second sub-coil, the first port and the second port are led out by the first sub-coil, the third port is led out by the second sub-coil, the second sub-coil is further led out with a fourth port, and the fourth port is used for being connected with the external circuit after being connected with the second port. In some embodiments, the number of turns of the first and second sub-coils is the same, the winding directions of the first and second sub-coils are the same, or the number of turns of the first and second sub-coils is the same, the winding directions of the first and second sub-coils are different, or the number of turns of the first and second sub-coils is different, the winding directions of the first and second sub-coils are the same, or the number of turns of the first and second sub-coils is different. In some embodiments, the number of turns of the coil between the first port and the second port is the same as the number of turns of the coil between the second port and the third port, the direction of the coil winding between the first port and the second port is the same as the direction of the coil winding between the second port and the third port, or the number of turns of the coil between the first port and the second port is the same as the number of turns of the coil between the second port and the third port, the direction of the coil winding between the first port and the second port is different from the direction of the coil winding between the second port and the third port, or the number of turns of the coil between the first port and the second port is different from the direction of the coil winding between the second port and the third port, or the direction of the coil winding between the first port and the second port is the same as the direction of the coil winding between the second port and the third port. In some embodiments, the number of the magnetic c