Optimal Tracking with Disturbance Rejection of Voltage Source Inverters

Jiaxin Teng, Weinan Gao, Dariusz Czarkowski, Zhong Ping Jiang

Research output: Contribution to journalArticlepeer-review

Abstract

This paper presents a novel voltage regulator design methodology for a three-phase voltage source inverter with uncertain load dynamics. Different from existing literature, the load is treated as a dynamic uncertainty and a robust optimal state-feedback controller is proposed through the integration of optimal output regulation theory and backstepping method. To avoid sensing the inductor current, an output-feedback control scheme is developed as well. Stability of the inverter-load system is rigorously analyzed via the small-gain techniques. It is ensured that the tracking error asymptotically converges to zero through both the proposed state-feedback and output-feedback controllers. A standard proportional resonant controller is also designed for the purpose of comparison. It is shown that the proposed controller has inherent robustness and does not require retuning with different applications. The controller design method is generalized for grid-tie applications, since the grid can be regarded as a stable load system. Simulations and experimental results show the effectiveness of the control approaches.

Original languageEnglish (US)
Article number8763899
Pages (from-to)4957-4968
Number of pages12
JournalIEEE Transactions on Industrial Electronics
Volume67
Issue number6
DOIs
StatePublished - Jun 2020

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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