Advances in Dynamic Voltage Restorers

Dear Colleagues,

Most of the modern loads are sensible to voltage fluctuations, especially those one based on microprocessors. Nowadays, such loads are the majority, and they are present everywhere, from our homes (which each day are becoming “smarter”) to large industrial plants. But the highest impacts of this power quality issue occurs when those loads are employed in critical applications like hospitals, telecommunication infrastructure, and industries. A voltage sag/swell on the power distribution system, even if for a fraction of second, could result in production losses and a cost-significant financial impact. Although most of those voltage disturbances are originated by faults on the distribution power system and the efforts to minimize them are constantly underway, avoiding them completely is economically inviable. Thus, the development of power devices for the custom power type has been presented as one of the means to protect sensitive loads from the problems of power quality such as voltage sags/swells. The dynamic voltage restorer (DVR) has become a well-accepted alternative to mitigate these problems. This Special Issue of Energies intends to collect and disseminate the latest research and developments related to “Advances in Dynamic Voltage Restorers.” The topics of interest include, but are not limited to:

• active power conditioners (dynamic voltage restorers (DVR), unified power quality conditioners (UPQC), active power filters, hybrid filters)
• control techniques for the improvement of active power conditioners (power theories, signal processing techniques)
• advanced active power conditioners monitoring (smart meters, phasor measurement unit, signal processing technics, event classification)
• Topologies and power devices for series compensation
• Fault tolerance in series compensation devices
• Energy storage systems and other methods to improve the compensation time

Prof. Marcelo Cabral Cavalcanti
Prof. Leonardo Rodrigues Limongi
Prof. Gustavo Medeiros de Souza Azevedo
Guest Editors

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