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Study of Inductive Load Effect in Boost Converter

Author: ZhuZiQiang
Tutor: ZhouYuFei
School: Anhui University
Course: Microelectronics and Solid State Electronics
Keywords: Boost Converter The resistive sense of load Discrete mapping Eigenvalue
CLC: TM46
Type: Master's thesis
Year: 2010
Downloads: 62
Quote: 0
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Abstract


Nonlinear systems theory provides a theoretical basis for the application of power electronics technology, the use of nonlinear circuit model to solve the problem of the actual power electronics technology to provide a good reference for ideas. The nonlinear model processing method was applied to the analysis of power electronic circuits, in-depth understanding of the mechanism on the stability of the entire circuit system and chaotic phenomenon of great help, to avoid power electronic circuits, generate, control or strengthen The chaos phenomenon has a very positive sense. In recent years, with the development of the switching power technology, power switching converters, in real life, has been more widely used. But often in the practical application of engineering power loss, low output performance, theoretical calculations and actual energy consumption that much difference. The papers from the occasion to consider the practical application of the switching converter, analysis of the the converter main energy storage element and load disturbance factors ingredients. Performance in a particular switching converter, including, the interference of the parasitic resistance of the inductance of the energy storage element for the blocking of the circuit current; taking into account the complexity of the load-circuit side in the practical application, there are many high power electrical products manufactured according to the principle of electromagnetic induction containing inductive loads. Will generate an induced electromotive voltage when the current is rapidly changing, causing the power of the moment overload, may produce a strong sense barrier effect, resulting in the consumption of reactive power, interested in the loss of power output and absorption as well as the input stage inverter signal pollution, affect the power life. The main features of the inductive load voltage leads the current. Firstly, the establishment of the system of equations of state based on the the load resistance sense characteristics and the energy storage inductor parasitic resistance characteristics, Boost converter inductive load Matlab / Simulink simulation model, in the selected Boost Converter stable initial value gradually change the filter inductor value, and the bifurcation diagram obtained by simulation under different filter inductor parameters. In the case of the load impedance sense, the system began to appear unstable phenomenon, and as the load impedance sense of increase, a significant increase in the stability of the entire system; then by constructed Boost Converter discrete time iterative map by calculating the Jacobian matrix eigenvalue of the equilibrium point, the stability of the inductive load Boost converter theoretical analysis. The theoretical analysis and numerical simulation results show the Boost converter load impedance sense the stability of the system had a significant impact, that sense of load impedance changes can cause the system to the instability of the bifurcation behavior. Concluded in this paper has a very positive role in the actual circuit design analysis. The loading effect of the switching converter converter step-up ratio, output efficiency, the input phase difference, small signal stability, the ratio of the input and output impedance has a very important impact. Resistive sense the load on the system stability, this paper summarizes the design converter load and improve the the converter overall stability reference.

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CLC: > Industrial Technology > Electrotechnical > Transformers, converters and reactors > Converter
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