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This paper presents a dynamic dead angle control of three-level voltage source converter based HVDC system for real and reactive power control operating at Fundamental Frequency Switching (FFS). A three-level voltage source converter replaces the conventional two-level VSC and it is designed for the active and reactive power control is all four quadrants operation. A new control method is developed...
The increasing demand of electrical power and continuous depreciation of conventional energy resources like oil, gas and coal, have facilitated the researchers to think over distributed electricity generation and consumption from the renewable sources like mini/micro hydro, biogas, wind etc., Three-phase self excited induction generator (SEIG) seems to be a prospective player for generation of low...
In this paper, a control algorithm based on Power Balance Theory (PBT) is modified to control the DSTATCOM. A 3-leg VSC (voltage source converter) with a zigzag transformer is used as a DSTATCOM (Distribution Static Compensator) for compensation of the reactive power, harmonic currents, unbalance loads and the neutral current in three-phase four-wire distribution system. The modified PBT based control...
This paper presents a new control strategy for real and reactive power control of three-level multipulse voltage source converter based High Voltage DC (HVDC) transmission system operating at Fundamental Frequency Switching (FFS). A three-level voltage source converter replaces the conventional two-level VSC and it is designed for the real and reactive power control is all four quadrants operation...
This paper deals with the analysis, design and control of a three-level 24-pulse Voltage Source Converter (VSC) based High Voltage Direct Current (HVDC) system. A three level VSC operating at fundamental frequency switching (FFS) is proposed with 24-pulse VSC structure to improve the power quality and reduce the converter switching losses for high power applications. The design of three-level VSC...
This paper deals with an integrated voltage and frequency controller (IVFC) for a self excited induction generator (SEIG) in a standalone micro hydro system. The proposed IVFC is used to control the terminal voltage as well as frequency of SEIG system. This IVFC consists of a 3-phase 3-leg current controlled voltage source converter (CC-VSC) and its control scheme is realized using power balance theory...
In this paper, a DSTATCOM (Distribution Static Compensator) using three single-phase VSCs (voltage source converters) integrated with three single phase transformers is employed for the power quality improvement in three-phase fourwire distribution system. Three single phase transformers are used for isolation and connection of H-bridge VSCs. This DSTATCOM provides the voltage regulation or power...
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