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Control strategy for three-phase current-source inverters based on Lyapunov’s direct method

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2 Author(s)
Hasan Komurcugil ; Computer Engineering Department, Eastern Mediterranean University, Gazima¿usa, via Mersin 10, Turkey ; Osman Kukrer

A new control strategy for three-phase current-source inverters is proposed based on a model of the converter in the rotating dq frame. The control equations are derived by making use of Lyapunovpsilas direct method. It is shown analytically that a globally stable operation is possible for the closed-loop system. The amplitude of the dc current is adjusted by employing a proportional-integral regulator in the output voltage control loop. The correct operation of the proposed strategy is verified through simulations. Results pertinent to a step load change indicate that reasonably fast responses of the output voltage without large distortion can be obtained.

Published in:

2008 IEEE International Symposium on Industrial Electronics

Date of Conference:

June 30 2008-July 2 2008