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Voltage control of current source inverters

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4 Author(s)
V. D. Colli ; DAEIMI Dept. of Autom. & Magnetics, Univ. of Cassino, Italy ; P. Cancelliere ; F. Marignetti ; R. Di Stefano

The current source inverters may become direct competitors of the voltage source inverters thanks to the voltage control techniques. The paper proposes an improved voltage control technique for current source inverters, that chooses the current vectors relying on bang-bang controllers. This technique is compared to a well-established one using current space vector modulation and synchronous-frame proportional and integral controllers. The presented controller is explained and validated by means of off-line as well as real time simulations and experimental tests. The numerical results prove that the proposed control technique produces less distorted voltage waveforms in terms of total harmonic distortion and spectrum. According to the real-time simulations performed the proposed control technique is computationally less expensive than the benchmark. Finally, the experimental results obtained confirm the feasibility of the proposal.

Published in:

IEEE Transactions on Energy Conversion  (Volume:21 ,  Issue: 2 )