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Power supply circuit modeling simulation method based on cascade topology transfer function

A technology of transfer function and power circuit, applied in the direction of CAD circuit design, etc., can solve the problem that the basic topology model cannot reach the level of engineering application, and achieve the effect of simple model, accurate simulation result and suitable for engineering

Pending Publication Date: 2020-05-22
扬州船用电子仪器研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, simulation models of various basic topologies have been researched, but considering the optimal design and diversification requirements of the power supply, a single basic topology model is obviously not up to the level of engineering application

Method used

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  • Power supply circuit modeling simulation method based on cascade topology transfer function
  • Power supply circuit modeling simulation method based on cascade topology transfer function
  • Power supply circuit modeling simulation method based on cascade topology transfer function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0065] Taking the BUCK feeding full bridge as an example, the specific implementation method is described:

[0066] Step 1: According to the requirements of the indicators, draw a schematic diagram, such as figure 1 , figure 2 As shown, the details are as follows:

[0067] BUCK feed full bridge is divided into voltage feed and current feed, the difference is:

[0068]1. BUCK voltage feeds the output wave capacitance of the full bridge

[0069] 2. The output of the BUCK current-fed full bridge has no filter capacitor, which is equivalent to the equivalent capacitance refracted by the secondary output capacitor; there is no dead zone between the two pairs of bridge arms, but there is a certain common time. When they are common, due to the inductance The high impedance of the bridge makes the power supply of the bridge a constant current source.

[0070] The present invention selects the BUCK current-fed full bridge, and draws a schematic diagram according to its characteris...

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PUM

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Abstract

The invention discloses a power supply circuit modeling simulation method based on a cascade topology transfer function. The method comprises the following steps: drawing a power circuit schematic diagram; drawing a system dynamic block diagram of the power supply circuit; determining a model to be solved according to the analysis of each module transfer function in the system dynamic block diagram; determining a vector of a variable, related to the running state, of a model needing to be solved in a switching period; establishing a state equation, and determining a state matrix A, an input matrix B, an output matrix C0 and a transfer matrix E through the state equation; solving a state equation; combining a known part to obtain a complete cascade topology transfer function; and determining a power supply circuit control loop according to the transfer function of the cascade topology, and establishing a power supply circuit system model for simulation. According to the method, variouscascaded models are established, the expansibility is high, the application is flexible, the established models and simulation results are more accurate, the models are simple, and the method is moresuitable for engineering.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and in particular relates to a method for modeling and simulating a power supply circuit based on a cascade topology transfer function. Background technique [0002] With the improvement of the performance of electrical equipment, the requirements for the power supply are also increased. At the same time, different requirements are put forward for the suitability, electromagnetic compatibility, power density, output quality, efficiency, and development cycle of the power supply. The model in the digital simulation of the entire electrical equipment has already put forward preliminary requirements, so the simulation research on the power supply is imminent. [0003] At present, simulation models of various basic topologies have been researched, but considering the optimal design of the power supply and the requirements of diversification, a single basic topological model obviously cannot...

Claims

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Application Information

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IPC IPC(8): G06F30/36
Inventor 张峻岭金仁波
Owner 扬州船用电子仪器研究所
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