Table-Based Direct Power Control: A Critical Review for Microgrid Applications

Direct power control (DPC) has increasingly gained attention in the last years as a robust and simple control scheme. Yet, the implications of some of the assumptions made by the original table-based DPC are not well explained in the literature. Here, a new formulation of DPC is presented, that allo...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2010-12, Vol.25 (12), p.2949-2961
Main Authors: Alonso-Martínez, Jaime, Carrasco, Joaquín Eloy-García, Arnaltes, Santiago
Format: Article
Language:English
Subjects:
Control algorithms
Control systems
Direct power control (DPC)
Electric power
Electrical engineering
Equations
Inverters
Power control
power systems control
Reactive power
Smart grid technology
Switches
switching table
three-phase inverter
Voltage control
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Summary:Direct power control (DPC) has increasingly gained attention in the last years as a robust and simple control scheme. Yet, the implications of some of the assumptions made by the original table-based DPC are not well explained in the literature. Here, a new formulation of DPC is presented, that allows to analyze the shortcomings of this kind of algorithms, mainly regarding the power limits in which table-based algorithms are valid. This is a key aspect for microgrid applications, as they require a wide range of possible active and reactive power setpoints in order to be able to control the system's voltage and frequency. A new table is then presented that allows to overcome those limitations. The proposed table is valid at any point of the inverter's power limits.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2010.2087039