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논문 기본 정보

자료유형
학술저널
저자정보
Jian Chen (Southeast University) Zheng Wang (Southeast University) Yibo Wang (Southeast University) Ming Cheng (Southeast University)
저널정보
전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.17 No.6
발행연도
2017.11
수록면
1,500 - 1,511 (12page)

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The purpose of this paper is to study a high-performance control scheme for neutral-point-clamping three-level (NPC-3L) inverter fed dual three-phase permanent magnet synchronous motor (PMSM) drives by considering some asymmetric factors such as the non-identical parameters in phase windings. To implement this, the system model is analyzed for dual three-phase PMSM drives with asymmetric factors based on the vector space decomposition (VSD) principle. Based on the equivalent circuits, PI controllers with feedforward compensation are used in the d-q subspace for regulating torque, where the cut-off frequency of the PI controllers are set at the twice the fundamental frequency for compensating both the additional DC component and the second order component caused by asymmetry. Meanwhile, proportional resonant (PR) controllers are proposed in the x-y subspace for suppressing the possible unbalanced currents in the phase windings. A dual three-phase space vector modulation (DT-SVM) is designed for the drive, and the balancing factor is designed based on the numerical fitting surface for balancing the DC link capacitor voltages. Experimental results are given to demonstrate the validity of the theoretical analysis and the proposed control scheme.

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Abstract
Ⅰ. INTRODUCTION
Ⅱ. CONFIGURATION AND MODELING
Ⅲ. DT-SVM FOR NPC-3L SIX-PHASE INVERTERS
Ⅳ. DC LINK CAPACITORS VOLTAGE BALANCING CONTROL
Ⅴ. CONTROL SCHEME
Ⅵ. EXPERIMENTAL VERIFICATION
Ⅶ. CONCLUSIONS
REFERENCES

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