Management method and equipment for running passage numbers in multi-phase staggered printed flexible circuit (PFC)

A technology of multi-phase interleaving and management method, which is applied in the field of management of the number of operating channels in a multi-phase interleaving PFC circuit, can solve problems such as low system efficiency, and achieve the effect of increasing hardware costs

Inactive Publication Date: 2018-11-06
QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current PFC circuit usually uses one-phase or multi-phase PFC for power factor correction. The disadvantage of this is that when the load power changes, the power factor and system efficiency will also change, so there will be some system efficiency. lower case

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  • Management method and equipment for running passage numbers in multi-phase staggered printed flexible circuit (PFC)
  • Management method and equipment for running passage numbers in multi-phase staggered printed flexible circuit (PFC)
  • Management method and equipment for running passage numbers in multi-phase staggered printed flexible circuit (PFC)

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Embodiment Construction

[0035] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention.

[0036] An embodiment of a method for managing the number of operating channels in a multi-phase interleaved PFC circuit proposed by the present invention, the main steps include:

[0037] According to the current output power of the multi-phase interleaved PFC circuit, the corresponding number of PFC channels are controlled to operate.

[0038] See attached figure 1 , figure 1 It is the main step of the second embodiment of the method for managing the number of operating channels in the multi-phase interleaved PFC circuit of the present invention. like figure 1 As shown, the management method of this embodiment includes:

[0039] ...

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Abstract

The invention relates to the field of power factor correction, in particular to management method and equipment for running passage numbers in a multi-phase staggered printed flexible circuit (PFC). By the management method and equipment, the technical problem how to improve a power factor under the condition that hardware cost is not increased is solved. The passage number management method proposed by the invention comprises the steps of firstly, acquiring a current output power of the multi-phase staggered PFC; secondly, acquiring a corresponding relation between the pre-determined output power and the running passage number; and finally, acquiring target numbers of running passages according to the current output power and the corresponding relation, and controlling PFC passages in target numbers to run. By the method, no extra power device is needed, and thus, the hardware cost cannot be increased; the output power of the PFC can be obtained by calculating the power of a load, thepassage numbers are controlled according to the current output power, and the power factor of the system can be effectively improved.

Description

technical field [0001] The invention relates to the field of power factor correction, in particular to a method and device for managing the number of operating channels in a multiphase interleaved PFC circuit. Background technique [0002] At present, DC inverter air conditioners are more and more popular among consumers because of their good energy saving, precise temperature control, ultra-low temperature startup, and rapid heating. In the air conditioner frequency conversion control system, the 220V AC power is rectified by the rectifier bridge and inverted by the high-power transistor. As a result, current high-order harmonics are generated in the input and output loops. Current harmonics will cause serious distortion of grid voltage, power factor reduction and other problems. [0003] Most of the current DC inverter air conditioners use a power factor correction (Power Factor Correction, PFC) circuit, which can not only improve the power factor of the power supply, but...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/42
CPCH02M1/4216Y02B70/10
Inventor 丛安平邵海柱耿焱时斌张波
Owner QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD
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