Title :
Three-Level 12-Pulse STATCOM with Constant DC Link Voltage
Author :
Singh, Bhim ; Srinivas, Kadagala Venkata
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol.-Delhi, New Delhi, India
Abstract :
In this paper, an operation methodology of a STATCOM (static synchronous compensator) is proposed with constant dc link voltage. For achieving this objective, two sets of three-level 12-pulse VSCs are used which are operated at the fundamental frequency switching. The reactive power is controlled by the phase angle difference between the two sets of three-level 12-pulse VSCs. Detailed analysis is made to find out the optimum value of conduction angle to get minimum THD (total harmonic distortion). The converter utilization in the proposed configuration of STATCOM is improved as it is working at a constant dc link voltage. The proposed model of the STATCOM is connected to a 33 kV, 50 Hz system and simulation results are presented for demonstrating its steady state and dynamic performance.
Keywords :
harmonic distortion; reactive power control; static VAr compensators; STATCOM; constant DC link voltage; frequency 50 Hz; frequency switching; reactive power; static synchronous compensator; total harmonic distortion; voltage 33 kV; Automatic voltage control; Control systems; Converters; Flexible AC transmission systems; Mathematical model; Power conversion; Pulse width modulation; Reactive power; Reactive power control; Static VAr compensators;
Conference_Titel :
India Conference (INDICON), 2009 Annual IEEE
Conference_Location :
Gujarat
Print_ISBN :
978-1-4244-4858-6
Electronic_ISBN :
978-1-4244-4859-3
DOI :
10.1109/INDCON.2009.5409473
