Title :
A new high-pulse voltage-sourced converter for HVDC transmission
Author :
Liu, Yonghe H. ; Arrillaga, Jos ; Watson, Neville R.
Author_Institution :
Dept. of Electr. & Electron. Eng., Canterbury Univ., Christchurch, New Zealand
Abstract :
The proposed converter is based on the reinjection of a series of DC voltage pulses, at a frequency multiple of the fundamental, that shape the output voltage waveforms into a multilevel scheme. The reinjection ratio and frequency are chosen to convert the standard 12-pulse into 36-pulse configuration without the assistance of filters or PWM. Thus, the switching losses are greatly reduced. The harmonic current injection can be kept within present standards by an appropriate choice of the interface transformer leakage reactance.
Keywords :
HVDC power convertors; HVDC power transmission; electric reactance; losses; magnetic leakage; switching convertors; transformers; 12-pulse configuration; 36-pulse configuration; DC voltage pulses; HVDC transmission; harmonic current injection; high-pulse voltage-sourced converter; interface transformer leakage reactance; output voltage waveforms shaping; reinjection frequency; reinjection ratio; switching losses; Bridge circuits; Capacitors; Frequency conversion; HVDC transmission; Power conversion; Pulse shaping methods; Pulse transformers; Pulse width modulation; Pulse width modulation converters; Voltage;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2003.817727
