This paper presents an improved dead-beat predictive direct power control strategy and new voltage vector sequences for reversible three-phase grid-connected voltage-source converters. It analyzes the rate of change of active and reactive power for each voltage vector in different sectors. The study found issues with the predicted duration times of conventional active vectors being less than zero. To address this, two alternative vector sequences are proposed, analyzed, and experimentally validated on a 1.5 kW reversible grid-connected voltage-source converter system.
JPEEE1440 Cascaded Two-Level Inverter-Based Multilevel STATCOM for High-Pow...chennaijp
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Wind power stations, many located in remote areas; so they are characterized by weak grids and are often submitted to power system disturbance like faults. In this paper, the behaviour of a wind energy conversion system that uses the control of the rotor side converter (RSC) by three different methods under faulty conditions is presented. The behaviour of these systems during a grid failure is an important issue. DFIG is analysed and simulated under differing faulty conditions in the environment of MATLAB/SIMULINK. Simulation results show that the proposed method has proper operation during fault conditions.
JPEEE1440 Cascaded Two-Level Inverter-Based Multilevel STATCOM for High-Pow...chennaijp
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Wind power stations, many located in remote areas; so they are characterized by weak grids and are often submitted to power system disturbance like faults. In this paper, the behaviour of a wind energy conversion system that uses the control of the rotor side converter (RSC) by three different methods under faulty conditions is presented. The behaviour of these systems during a grid failure is an important issue. DFIG is analysed and simulated under differing faulty conditions in the environment of MATLAB/SIMULINK. Simulation results show that the proposed method has proper operation during fault conditions.
Digital plug in repetitive controller for single-phase bridgeless pfc converters
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International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
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Power quality problems in power systems have been i mproved due to nonlinear loads. To compensate these problems Direct Power Compensator was proposed in this paper. A Direct Power Compensator (DPC) is proposed in this paper to elim inate the harmonic currents,compensate power factor and voltage unbalance problems created by th e nonlinear loads present in three phase systems. A DPC contains back to back converter by sharing th e same dc link power and v/v transformer to provide a voltage balance in transmission line. Hys teresis harmonic current regulator is used to produce pulse for back to back converter. A control ler maintains the dc-link voltage and compensates the power factor,harmonic currents. A comparative analysis for traction system with and without DPC was performed using MATLAB Simulink . Simulation results show the controller advantages and the applicability of the proposed me thod in railway systems.
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International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
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In this paper, a Power Flow Control in transmission line with respect to voltage condition (L-G, L-L-G, L-L)
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International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
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Performance Investigation of a Monopolar HVDC Transmission System Feeding a ...
Improved voltage vector sequences on dead-beat predictive direct power control of reversible three-phase grid-connected voltage-source converters
1. IMPROVED VOLTAGE-VECTOR SEQUENCES ON DEAD-BEAT
PREDICTIVE DIRECT POWER CONTROL OF REVERSIBLE THREEPHASE GRID-CONNECTED VOLTAGE-SOURCE CONVERTERS
ABSTRACT:
This paper presents a dead-beat predictive direct power control (DPC) strategy and its improved
voltage-vector sequences for reversible three-phase grid-connected voltage-source converters (VSCs). The
instantaneous variation rates of active and reactive powers, by applying each converter voltage vector in 12
different sectors, are deduced and analyzed. Based on the power variation rates, it is found that the values of
the predicted duration times for the two conventional active converter voltage vectors are less than zero
when the grid-connected VSC operates as either a rectifier or an inverter. In order to solve this issue, two
new alternative vector sequences are proposed and compared. Experimental results on a 1.5 kW reversible
grid-connected VSC system are presented to validate the feasibility of the proposed voltage-vector
sequences on the dead-beat predictive DPC strategy.