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A simple and intuitive Doubly Fed Induction Generator (DFIG) predictive rotor current control scheme is presented. Predictive control of an Indirect Matrix Converter (IMC) is combined with predictive rotor current control of a DFIG to achieve a very good dynamic response as the rotor currents smoothly follow the applied reference in a ±30% range of the generator nominal rpm. Simulation results are...
Distributed power systems are getting more attention now-a-days due to their high flexibility and reliability. In this paper, predictive current control strategy is proposed for the grid-connected four-leg inverters. This kind of converter is developed to deliver power to the unbalanced/nonlinear three-phase loads and as well to the grid. The discrete-time model of the converter and load is used to...
Matrix converters are capable of managing bidirectional power flow while fully controlling the source currents and load voltages. The topology is characterized by its reduced size and weight compared to Voltage Source Inverters because there is no DC link stage. Unfortunately, any source voltage disturbance like unbalances, among others, can be reflected directly on the load. This work uses the advantages...
This investigation presents a current control method for an indirect matrix converter. The method, called predictive current control selects the switching state that minimizes the error in the output currents according to their reference values and, at the same time, the control scheme is enhanced by including a reactive power minimization strategy with the goal to have unity power factor in the input...
Matrix converters are capable of managing bidirectional power flows while fully controlling the source and load currents. The topology is characterized by its reduced size and weight because the dc-link stage is not necessary unlike most power converters. A novel control strategy applied to a direct matrix converter is presented in this work. The proposed method allows the control of load and source...
This paper presents the implementation of a predictive control scheme for an indirect matrix converter. The control scheme selects the switching state that minimizes the reactive power and the error in the output currents according to their reference values. This is accomplished by using a prediction horizon of one sample time and a very intuitive control law. Experimental results with a 6.8-kVA indirect...
The matrix converter features natural bidirectional power flow, sinusoidal current/voltage waveforms, and a reduced size and weighty compared to standard direct static power converters. However, it is sensitive to polluted AC supplies because no storing elements are present and thus any disturbance would reach the load terminals. Typical disturbances in the AC distribution systems are voltage unbalances,...
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