Control strategy for three-phase current-source inverters based on lyapunov's direct method
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Abstract
A new control strategy for three-phase currentsource inverters is proposed based on a model of the converter in the rotating dq frame. The control equations are derived by making use of Lyapunov's 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. © 2008 IEEE.
Description
2008 IEEE International Symposium on Industrial Electronics, ISIE 2008 --
Keywords
Control equations, Control strategies, Correct operations, Current source inverters, DC currents, Fast responses, Load changes, Loop systems, Lyapunov's direct methods, Output voltages, Phase currents, Stable operations, Electric potential, Telecommunication networks, Voltage regulators, Industrial electronics
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IEEE International Symposium on Industrial Electronics
