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Analysis of D-Q Small-Signal Impedance of Grid-Tied Inverters
This paper analyzes the small-signal impedance of three-phase grid-tied inverters with feedback control and phase-locked loop (PLL) in the synchronous reference (d-q) frame. The result unveils anExpand
Digital Control in Power Electronics
This book presents the reader, whether an electrical engineering student in power electronics or a design engineer, a selection of power converter control problems and their basic digital solutions, based on the most widespread digital control techniques, to give a basic, introductory knowledge of thedigital control techniques applied to power converters. Expand
Conservative Power Theory, a Framework to Approach Control and Accountability Issues in Smart Microgrids
Smart microgrids offer a new challenging domain for power theories and compensation techniques, because they include a variety of intermittent power sources, which can have dynamic impact on powerExpand
Impedance-Based Analysis of Grid-Synchronization Stability for Three-Phase Paralleled Converters
Grid synchronization stability issues and subsynchronous oscillations between synchronous generators exist in electrical power systems. Three-phase voltage-source converters (VSCs) are beingExpand
Analysis of Phase-Locked Loop Low-Frequency Stability in Three-Phase Grid-Connected Power Converters Considering Impedance Interactions
A state-feedback quasi-static SRF-PLL model is proposed, which can identify and quantify the inherent frequency self-synchronization mechanism in the converter control system and explain the PLL instability issues and the related islanding-detection methods in early publications and industry reports. Expand
Repetitive-based control for selective harmonic compensation in active power filters
A repetitive-based controller for active power filters, which compensates selected current harmonics produced by distorting loads using a closed-loop repetitive- based control scheme based on a finite-impulse response digital filter, which allows full compensation of selected frequencies, even if the active filter has limited bandwidth. Expand
Phasor dynamics of thyristor-controlled series capacitor systems
This paper develops simple but accurate continuous-time, large-signal dynamic models for a thyristor-controlled series capacitor (TCSC). The models are based on the representation of voltages andExpand
A closed-loop selective harmonic compensation for active filters
This paper proposes a control algorithm for parallel active power filters, based on current-controlled pulsewidth-modulated converters, which allows precise compensation of selected harmonic currentsExpand
Leakage Current Reduction in a Single-Phase Bidirectional AC–DC Full-Bridge Inverter
The leakage current in grid-interface converter systems presents a considerable issue in regard to safety and efficiency. The full-bridge inverter is a well-accepted topology in single-phase powerExpand