Gate Trigger Unit for Voltage Reinjection Multilevel-VSC with Cascaded H-Bridges

Author

Li, Ming ; Ma, Li ; Zhao, Mingjun ; Luo, Zhenpeng

Author_Institution

Sch. of Inf. Eng., Inner Mongolia Univ. of Technol., Hohhot, China

fYear

2010

fDate

28-31 March 2010

Firstpage

1

Lastpage

4

Abstract

A gate trigger unit (GTU) design is proposed based on cascaded H-bridge voltage reinjection multilevel voltage source configuration (MLVR-HB-VSC) for use in large power and voltage ratings. Specific Implementation of gate-level trigger was analysis to guarantee dynamic voltage balance of compactors in the circuit. Grid synchronization, judgment of edge state changes, capacitor voltage balance and some crucial technical issues what should be pay attention to are analyzed in detail. To verify the steady state and dynamic behavior of gate-level trigger unit, extensive simulation is carried out with reference to the STATCOM application.

Keywords

cascade networks; power grids; static VAr compensators; synchronisation; trigger circuits; STATCOM application; capacitor voltage balance; cascaded H-bridges; compactors; dynamic voltage balance; gate trigger unit; grid synchronization; voltage reinjection multilevel-VSC; Bridge circuits; Capacitors; Controllability; Frequency synchronization; Phase locked loops; Power conversion; Pulse width modulation; Switches; Switching converters; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Engineering Conference (APPEEC), 2010 Asia-Pacific

Conference_Location

Chengdu

Print_ISBN

978-1-4244-4812-8

Electronic_ISBN

978-1-4244-4813-5

Type

conf

DOI

10.1109/APPEEC.2010.5449047

Filename

5449047