Roberto A. Fantino

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A control strategy for a low resonance frequency LCL filter used in the input stage of dc-dc bidirectional boost converters is proposed. The controller consists of a simple PI controller plus a linear filter added in series with the PI integrator term. The modified PI controller achieves the active damping of the LCL filter and allows to arbitrarily place(More)
A control strategy for LCL Grid-connected voltage source converters is proposed. With only grid feedback current control, the proposal allows the use of the proportional plus resonant regulator (PR) optimal design, regardless of the filter resonant frequency. To prove its feasibility, the controller is simulated in a realistic system for different values of(More)
A control strategy for <italic>LCL</italic> grid-connected voltage source inverters is proposed. Using the injected grid current measurement exclusively, the proposal allows the use of the proportional plus resonant regulator optimum design, regardless of the filter resonance frequency. Simulation and experimental results that demonstrate the validity and(More)
A Grid-Voltage sensorless control strategy for LCL Grid-connected voltage source inverters is proposed. Positive and negative grid sequences used for synchronization are estimated using an observer. The control of the system is implemented with a strategy that allows the use of the proportional plus resonant regulator (PR) optimum design, regardless of the(More)
This paper presents experimental results obtained in an isolated 3KW DC-DC converter prototype suitable for photovoltaic applications. Currents and voltages are computed based on the numerical solution of the nonlinear equations describing the steady state operation of the converter. With this computations the losses and the efficiency of the converter are(More)
In this paper a mechanical sensorless control strategy for controlling a permanent magnet synchronous generator used in a variable speed wind energy conversion system is proposed. In order to track the wind turbine maximum power point (MPPT) an observer-based generator torque control scheme is designed. The control law is built by using estimates of the(More)
In this paper, a current controller for an inverter connected to the grid through an LCL filter is proposed. Unlike classical active damping schemes, it is proposed to implement the controller by measuring the injected current only. It can be done irrespectively of the filter resonance frequency. In addition, it is possible to place the closed-loop poles of(More)
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