Date of Publication :19th June 2019

Abstract: Recently, developments in power electronics and semiconductor technology have lead improvements in power electronic systems. Current source inverters offer advantages of voltage boost, short circuit protection, reduced EMI and direct regeneration. While CSI control strategies are less developed than for a VSI, the topologies are functional duals and have much in common in a control sense. The energy performance of various types of voltage source and current-source converters is examined. The VSI has been widely investigated for optimum operation, but the CSI has not been so well studied. A major limitation for the CSI is the availability of modulation strategies with the sophistication and performance of their VSI counterparts. In particular, since CSI voltage regulation is the dual of VSI current regulation, current regulation control strategies for a VSI can be readily implemented as equivalent voltage control strategies for a CSI. The classical PI controller under the fundamental synchronous reference frame can obtain good waveforms under linear load conditions. This paper shows how a high performance PI stationary frame and P+Resonant CSI voltage regulator can be analytically designed and optimised, while in particular taking into account the second order response of a CSI filter/load combination

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