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In this paper, an improved power quality 18-pulse voltage source converter is proposed for back-to-back (BTB) high voltage direct current (HVDC) system. The proposed system is regulated using PI controller for which controller gains are selected using Ziegler Nichols approach for different transient conditions. The calculated controller gains are utilized with current regulated approach with reduced...
This paper investigates the basic proportional integral (PI) controller for power quality (PQ) improvement using a 12-pulse voltage source converter (VSC) based high voltage direct current (HVDC) transmission system. The PI controller's parameters are selected using Zeigler Nichols approach and applied for PQ improvement during various transients. A reduced current sensor topology is used to minimize...
This paper investigates a 12-pulse voltage source converter (VSC) for harmonics mitigation in high voltage DC (HVDC) system. The most promising features of the VSC based system are compact and light weight design, short installation and commissioning periods, low operation and maintenance cost and flexibility in control. A current multiplier approach is proposed in this paper inside the voltage control...
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