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One of the major drawbacks of Finite Control Set — Model Predictive Control (FCS — MPC), is the high switching frequency, besides a spread harmonic spectrum. Despite of this, the FCS — MPC provides excellent speed to changes of references and disturbances. In this work we present a control strategy based on FCS — MPC that allows a reduction of the switching frequency in steady state, increasing the...
This paper proposes a control strategy for a single-stage, three-phase photovoltaic (PV) system connected to a distribution network. The control entails obtaining the maximum power point of the PV system by means of a control strategy that is based on an inner current-control loop and an outer DC-link voltage regulator. The current-control mechanism decouples the PV system dynamic from those of the...
The utilization of multi-cell converters, based on low voltage semiconductors, has allowed the implementation of AC drives and PV farms in medium and high voltage levels. The conventional converter uses in the grid side a multipulse transformer that performs the cancellation of low frequency current harmonics, which are generated by the three-phase diode-based rectifiers included in the power cells...
Power converters have been widely used in industrial applications as parallel and series compensators, UPQCs, and STATCOMs. These electronic devices can also be utilized on weak-grid or micro-grid systems, where both the supply voltage amplitude and frequency, may vary considerably from the nominal values. Micro-grid and weak-grid systems are commonly associated to distribute non-conventional power...
Single-phase inverters have gained important acceptance last time. This is because single phase inverters have been used in renewable energy, ac drives and many other applications and controlled by name ways as linear, nonlinear predictive between others. This paper studied the control of a Single-Phase Current Source Inverter (SP-CSI) for multi-cell and three-phase applications. Cascaded H-Bridge...
This work deals with the control of a single-phase Current Source Inverter (CSI) in a three-phase array which can be used for both power drives and PV applications. Unlike in three-phase inverters, where the Fortescue Transform or Park Transformation can be applied in order to simplify the design of the controllers, for single-phase systems they cannot be directly applied making the control a difficult...
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