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A passivity-based multilevel active rectifier with adaptive compensation for traction applications

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4 Author(s)
Cecati, C. ; Dept. of Electr. Eng., Univ. of L''Aquila, Italy ; Dell'Aquila, A. ; Liserre, M. ; Monopoli, V.G.

The control of a single-phase multilevel H-bridge rectifier suitable for traction applications is considered. Such a converter often presents instability problems making difficult its design and uncertain its behavior. In this paper the use of a passivity-based controller is experimentally investigated. Such a controller achieves stability, unity power factor, good balancing between the two DC links, and satisfactory behavior even in the presence of load changes. A right choice of the damping parameters allows the fulfilling of system requirements in terms of DC-link voltage error and grid current distortion.

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Industry Applications, IEEE Transactions on  (Volume:39 ,  Issue: 5 )