Abstract
In this paper, the problem of simultaneous fault detection and control (SFDC) for a 3-phase 4-wire converter with neutral bridge arm, which is commonly used in the application of smart grid and distributed generation, is considered. By employing a detector/controller module consisting of a dynamic observer and a state feedback controller based on the dynamic observer, a multi-objective H∞ optimization SFDC framework is established to achieve the fault detection and control objectives simultaneously. Extended linear matrix inequalities (LMIs) characterizations are obtained as the strict conditions for solvability of the SFDC problem. The proposed method can reduce the designing conservativeness and overcome the shortcoming of existing SFDC methods by applying the superiority of dynamic observer. The achievable performance is analyzed quantitatively and the effectiveness of our designing method was illustrated and verified both in simulation and the hardware-in-the-loop(HIL) simulation which is conducted in a real-time simulation platform built by StarSim and MT respectively.
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