Power Self-Synchronization Control of Grid-Forming Voltage-Source Converters Against a Wide Range of Short-Circuit Ratio

Control of Grid Integrated Voltage Source Converters under Unbalanced Conditions

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Analysis of loss distribution of Conventional Boost, Z-source and Y-source Converters for wide power and voltage range

Boost converters are needed in many applications which require the output voltage to be higher than the input voltage. Recently, boost type converters have been applied for industrial applications, and hence it has become an interesting topic of research. Many researchers proposed different impedance source converters with their unique advantages as having a high voltage gain in a small range o...

Grid-voltage Synchronization Algorithms Based on Phase-locked Loop and Frequency-locked Loop for Power Converters

Wide-Dynamic-Range and High-Sensitivity Current-to-Voltage Converters

A wide dynamic range and a high sensitivity are often incompatible with each other in analog circuits, such as signal converters or amplifiers. In this paper, we present a method of developing current-to-voltage converters featuring both. It comprises two current-to-voltage conversions. One is to convert the DC component, i.e. the average level of the current input, into a voltage with a nonlin...

Modeling and Control of Voltage Source Converters Connected to the Grid

This thesis deals with the modeling and control of pulse width modulated (PWM) voltage source converters connected to the grid. When voltage source converters are connected to the grid, the power quality and the dynamic performance are affected by the line filter connected between the converter and the grid, and by nonlinearities caused by the switching converter. In the thesis, the dynamic per...