Boost converter model-based negative regulation voltage suppression condition analysis method

A technology of voltage suppression and converter, which is applied in the direction of instruments, electrical digital data processing, CAD circuit design, etc., and can solve problems such as slow system response speed and system instability

Active Publication Date: 2017-02-22
XIAN UNIV OF SCI & TECH +1
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Problems solved by technology

[0004] In order to solve the problems that the right half plane zero point in the mathematical model of the Boost converter leads to system instability, negative adjustment of the output voltage, and slow system response speed, a design principle of converter parame

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  • Boost converter model-based negative regulation voltage suppression condition analysis method
  • Boost converter model-based negative regulation voltage suppression condition analysis method
  • Boost converter model-based negative regulation voltage suppression condition analysis method

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Embodiment Construction

[0093] In order to make the technical means and creative features realized by the present invention easy to understand, the present invention will be further elaborated below.

[0094] The method for analyzing negative regulation voltage suppression conditions based on the Boost converter model includes the following steps:

[0095] Step 1: Establish a Boost converter research model:

[0096] See figure 1 , the Boost converter circuit includes an input voltage V i , inductance L, capacitance C, output voltage V O , resistor R, switch tube V T .

[0097] Step 2: By analyzing the mechanism of negative regulation voltage generation in CCM-CISM mode, determine the key parameters involved in the sudden change of negative regulation voltage:

[0098] 1. In CCM-CISM mode, the input voltage V i , output voltage V O And the duty cycle D has the following relationship:

[0099]

[0100] 2. Consider the negative adjustment phenomenon of the non-minimum phase system:

[0101] ...

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Abstract

The invention relates to a Boost converter model-based negative regulation voltage suppression condition analysis method. The method comprises the following steps of 1: building a Boost converter research model; 2: determining key parameters involved by negative regulation voltage leap by analyzing a mechanism of generating a negative regulation voltage in a CCM-CISM mode; 3: building a negative regulation voltage mathematic model, and analyzing influence of inductance and capacitance on the negative regulation voltage; 4: determining inductance and capacitance selection conditions of suppressing the negative regulation voltage; and 5: performing simulation and test verification. For the problems of an instable system, negative regulation of an output voltage, reduced system response speed and the like caused by right half plane zero in a Boost converter mathematic model, a converter parameter design principle of suppressing the negative regulation voltage is provided, an analysis method for solving the problem is given, and a used modeling form is of important significance for a reference provided for analyzing the problem.

Description

technical field [0001] The invention relates to the fields of Boost converter modeling and negative regulation voltage analysis, in particular to a negative regulation voltage suppression condition analysis method based on the Boost converter model. Background technique [0002] In the DC-DC converter, the Buck converter and its derivative topologies are all minimum phase systems when the capacitor voltage output is used as feedback, while Boost, Buck-Boost, Cuk, Zeta, Sepic and their derivative topologies are all non-minimum A phase system, represented by a mathematical model containing zeros in the right-half plane. The zero point of the right half plane will cause the transient value of its output voltage not to increase (decrease) when the duty cycle increases (or decreases), but first decreases (increases) and then The situation of increasing (decreasing) is called negative tone phenomenon. Negative regulation will prolong the transition time of the system, and at the...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/367G06F30/30
Inventor 皇金锋刘树林
Owner XIAN UNIV OF SCI & TECH
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