Transient of modified HVDC converters

Al-Majali, Hussein D.; Al-Dhalaan, S.

doi:10.1016/j.epsr.2006.10.002

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Analysis For the Modified Converter With Two By-pass Igbt Valves1

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Cited by 7 publications

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“…Unbalanced operation is studied in [33]- [35]. The transient state is studied in [36], fast and continuous control of a modified HVDC converter [37]. In this paper the steady-state is studied.…”

Section: Analysis For the Modified Converter With Two By-pass Igbt Valvesmentioning

confidence: 99%

Performance analysis of multi-level high voltage direct current converter

Shahin¹,

Al-Majali

2022

IJECE

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<p class="Abstract">The conventional three-phase alternating current (AC) to direct current (DC) converter can be modified using two isolated-gate bipolar transistor (IGBT) as by-pass switches connected to tapping points on the secondary side of the transformer. This scheme yields a reduction in both harmonic contents and reactive volt-ampere absorption. This modified converter possibly eliminates the need for an on-load tap-changer on the converter transformer. The modified AC/DC converter is fully analyzed and implemented under balanced conditions using MATLAB-Simulink. The expressions of the output DC voltage are derived for different cases. The supply current harmonic contents, the reactive power absorption and the power factor have been compared for three schemes; the conventional bridge, the modified bridge using one by-pass IGBT valve and the modified bridge with two by-pass IGBT valves. </p>

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Section: Analysis For the Modified Converter With Two By-pass Igbt Valvesmentioning

confidence: 99%