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논문 기본 정보

자료유형
학술저널
저자정보
Jakkrit Pakdeeto (Suranaree University of Technology) Kongpan Areerak (Suranaree University of Technology) Kongpol Areerak (Suranaree University of Technology)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.13 No.4
발행연도
2018.7
수록면
1,566 - 1,577 (12page)

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초록· 키워드

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This paper presents a stability analysis of AC-DC power system feeding a speed controlled DC motor in which this load behaves as a constant power load (CPL). A CPL can significantly degrade power system stability margin. Hence, the stability analysis is very important. The DQ and generalized state-space averaging methods are used to derive the mathematical model suitable for stability issues. The paper analyzes the stability of power systems for both speed control natural frequency and DC-link parameter variations and takes into account controlled speed motor dynamics. However, accurate DC-link filter and DC motor parameters are very important for the stability study of practical systems. According to the measurement errors and a large variation in a DClink capacitor value, the system identification is needed to provide the accurate parameters. Therefore, the paper also presents the identification of system parameters using the adaptive Tabu search technique. The stability margins can be then predicted via the eigenvalue theorem with the resulting dynamic model. The intensive time-domain simulations and experimental results are used to support the theoretical results.

목차

Abstract
1. Introduction
2. Dynamic Model of Considered System
3. System Parameter Identification
4. Stability Analysis
5. Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2018-560-002230646