Reduced Order Identification and Stability Analysis of DC-DC Converters

Husan Ali; Xiancheng Zheng; Xiaohua Wu; Haider Zaman; Shahbaz Khan

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자료유형: 학술저널

저자정보: Husan Ali (Northwestern Polytechnical University) Xiancheng Zheng (Northwestern Polytechnical University) Xiaohua Wu (Northwestern Polytechnical University) Haider Zaman (Northwestern Polytechnical University) Shahbaz Khan (Northwestern Polytechnical University)

저널정보: 전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.17 No.2

발행연도: 2017.3

수록면: 453 - 463 (11page)

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This paper discusses the measurement of frequency response functions for various dc-dc converters. The frequency domain identification procedure is applied to the measured frequency responses. The identified transfer functions are primarily used in developing behavioral models for dc-dc converters. Distributed power systems are based upon such converters in cascade, parallel and several other configurations. The system level analysis of a complete system becomes complex when the identified transfer functions are of high order. Therefore, a certain technique needs to be applied for order reduction of the identified transfer functions. During the process of order reduction, it has to be ensured that the system retains the dynamics of the full order system. The technique used here is based on the Hankel singular values of a system. A systematic procedure is given to retain the maximum energy states for the reduced order model. A dynamic analysis is performed for behavioral models based on full and reduced order frequency responses. The close agreement of results validates the effectiveness of the model order reduction. Stability is the key design objective for any system designer. Therefore, the measured frequency responses at the interface of the source and load are also used to predict stability of the system.

#DC-DC converter #Nyquist criterion #Order reduction #Stability #System identification

Abstract
I. INTRODUCTION
II. TWO PORT MODEL OF DC-DC CONVERTERS
III. FREQUENCY RESPONSE MEASUREMENTS
IV. IDENTIFICATION OF MEASURED FREQUENCY RESPONSE FUNCTIONS
V. MEASURED AND IDENTIFIED FREQUENCY RESPONSE RESULTS
VI. FREQUENCY RESPONSE FUNCTIONS FOR REDUCED ORDER MODELS
VII. DYNAMIC ANALYSIS
VIII. STABILITY ANALYSIS
IX. CONCLUSIONS
REFERENCES

참고문헌 (23)

참고문헌 신청

[학술대회논문] - L. Man / 2010 / Switch mode power supply used for medical applications – packaging and thermal analysis / IEEE 16th International symposium for design and technology in electronic packaging(SIITME) : 275 ~ 278

[학술대회논문] - P. D. Nonn / 2012 / Design of an 80kV, 40A resonant switch mode power supply for pulsed power applications / IEEE International Power modulator and high voltage conference(IPMHVC) : 84 ~ 87

[학술대회논문] - C. E. C Ortiz / 2005 / Circuit oriented average modeling of switching power converters / European Conference on Power Electronics and Applications : 1 ~ 10

[학술지(정기간행물)] - J. Sun / 2006 / Characterization and performance comparison of ripple-based control for voltage regulator modules / IEEE Trans. Power Electron. 21 (2) : 346 ~ 353

[학술대회논문] - L. Arnedo / 2007 / Black-box terminal characterization modeling of DC-to-DC converters / Proc. of Twenty Second Annual IEEE Applied Power Electronics Conference and Exposition (APEC 07) : 457 ~ 463

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