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Article

A Multifunctional Dynamic Voltage Restorer for Power Quality Improvement

1
Department of Electrical Power Engineering, FEECS, VSB, Technical University of Ostrava, 70800 Ostrava, Czech Republic
2
Faculty of Electrical Engineering, Wroclaw University of Science and Technology, 50370 Wroclaw, Poland
*
Author to whom correspondence should be addressed.
Energies 2018, 11(6), 1351; https://doi.org/10.3390/en11061351
Received: 27 February 2018 / Revised: 12 May 2018 / Accepted: 21 May 2018 / Published: 25 May 2018
Power quality is a major concern in electrical power systems. The power quality disturbances such as sags, swells, harmonic distortion and other interruptions have an impact on the electrical devices and machines and in severe cases can cause serious damages. Therefore it is necessary to recognize and compensate all types of disturbances at an earliest time to ensure normal and efficient operation of the power system. To solve these problems, many types of power devices are used. At the present time, one of those devices, Dynamic Voltage Restorer (DVR) is the most efficient and effective device used in power distribution systems. In this paper, design and modeling of a new structure and a new control method of multifunctional DVRs for voltage quality correction are presented. The new control method was built in the stationary frame by combining Proportional Resonant controllers and Sequence-Decouple Resonant controllers. The performance of the device and this method under different conditions such as voltage swell, voltage sag due to symmetrical and unsymmetrical short circuit, starting of motors, and voltage distortion are described. Simulation result show the superior capability of the proposed DVR to improve power quality under different operating conditions and the effectiveness of the proposed method. The proposed new DVR controller is able to detect the voltage disturbances and control the converter to inject appropriate voltages independently for each phase and compensate to load voltage through three single-phase transformers. View Full-Text
Keywords: compensation techniques; dynamic voltage restorer; harmonic distortion; power quality; short circuit; voltage sag; voltage swell compensation techniques; dynamic voltage restorer; harmonic distortion; power quality; short circuit; voltage sag; voltage swell
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MDPI and ACS Style

Tien, D.V.; Gono, R.; Leonowicz, Z. A Multifunctional Dynamic Voltage Restorer for Power Quality Improvement. Energies 2018, 11, 1351. https://doi.org/10.3390/en11061351

AMA Style

Tien DV, Gono R, Leonowicz Z. A Multifunctional Dynamic Voltage Restorer for Power Quality Improvement. Energies. 2018; 11(6):1351. https://doi.org/10.3390/en11061351

Chicago/Turabian Style

Tien, Dung V., Radomir Gono, and Zbigniew Leonowicz. 2018. "A Multifunctional Dynamic Voltage Restorer for Power Quality Improvement" Energies 11, no. 6: 1351. https://doi.org/10.3390/en11061351

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