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This paper presents a current sensorless technique for current-driven full-bridge dc/dc converters. The proposed technique is able to precisely estimate the transformer current and in turn input/output current of the converter. Since the high-frequency current is estimated, different current-based modulations schemes (e.g., self-sustained oscillating control (SSOC), modulators for synchronous rectifications,...
This paper presents the stability analysis of the slip mode frequency shift (SMS) islanding detection technique. The developed mathematical model is based on the precise dynamical equations of the closed-loop control system for a grid-connected inverter. In particular, singular perturbation theory is used to divide the closed-loop dynamics into subsections with different rates of change. It is proven...
This paper presents a novel control approach to improve the dynamic response of wind energy control systems (WECS) that use a permanent magnet synchronous generator (PMSG) operating under a wide input and load range. In this paper, it's shown that WECS is classified as a Port-Controlled Hamiltonian (PCH) system. Therefore, a nonlinear controller based on PCH is proposed, which is able to robustly...
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