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Three-phase interleaving PFC circuit based on GaN power device

A technology of power components and phase circuits, applied in the field of three-phase interleaved parallel PFC circuits, can solve problems such as low reliability, high high frequency ripple, and poor electromagnetic compatibility.

Active Publication Date: 2022-01-04
成都天核科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high-frequency ripple of this circuit is high, the reliability is low, and the electromagnetic compatibility is also poor.

Method used

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  • Three-phase interleaving PFC circuit based on GaN power device
  • Three-phase interleaving PFC circuit based on GaN power device
  • Three-phase interleaving PFC circuit based on GaN power device

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0031] refer to figure 1 , a three-phase interleaved parallel PFC circuit based on GaN power components, including a signal sampling circuit, a filter circuit, a control circuit and a main power loop circuit, the signal sampling circuit includes a power supply input voltage sampling circuit, a node voltage input circuit and an output voltage Sampling circuit, the power supply input voltage sampling circuit, node voltage input circuit and output voltage sampling circuit are all connected to the control circuit, the control circuit is connected to the filter circuit, the filter circuit is connected to the main power loop circuit, the The main power loop circuit is connected with the output voltage sampling circuit; the main power loop includes a first phase circuit, a second phase circuit, a third phase circuit and a switch circuit connected in parallel, through the first phase circuit of the main power loop , The second-phase circuit and the third-phase circuit are connected in...

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PUM

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Abstract

The invention discloses a three-phase interleaving PFC circuit based on a GaN power device. The circuit comprises a signal sampling circuit, a filter circuit, a control circuit and a main power loop circuit; the signal sampling circuit comprises a power supply input voltage sampling circuit, a node voltage input circuit and an output voltage sampling circuit; the power supply input voltage sampling circuit, the node voltage input circuit and the output voltage sampling circuit are all connected with the control circuit; the control circuit is connected with the filter circuit; the filter circuit is connected with the main power loop circuit; the main power loop circuit is connected with the output voltage sampling circuit; and the main power loop comprises a first phase circuit, a second phase circuit, a third phase circuit and a switching circuit which are connected in parallel. According to the three-phase interleaving PFC circuit of the invention, smaller high-frequency ripples, higher reliability and better electromagnetic compatibility are realized, the power factor PF is greater than or equal to 0.99, and the size is smaller.

Description

technical field [0001] The invention relates to the technical field of power supply equipment, in particular to a three-phase interleaved parallel PFC circuit based on GaN power components. Background technique [0002] The power factor is referred to as PF, and its expression is: [0003] [0004] Among them, λ is PF, is the phase shift factor, and THD is the distortion factor. Low PF electrical equipment has adverse effects on the power supply system and transmission system, causing a huge power loss, and even the transmission line will need to be upgraded due to the reduction of the power factor. The IEC 61000-3-2 standard also clearly stipulates that for electrical equipment greater than 75W, the limit-harmonic current emission limit (the input current of each phase of the equipment is less than or equal to 16A). For this reason, power factor correction PFC (Power Factor Corrector) power converter came into being. [0005] With the invention and application of ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/42H02M1/088H02M1/44H02M1/12
CPCH02M1/4233H02M1/088H02M1/44H02M1/12Y02B70/10
Inventor 邓坤马权陶志强何小东肖涪梁建李志刚吴兴川
Owner 成都天核科技有限公司
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