DocumentCode :
586978
Title :
The control of unequal power losses distribution in three-level neutral-point-clamped VSC
Author :
Quan Chen ; Qunjing Wang ; Guoli Li ; Shichuan Ding
Author_Institution :
Res. Center for Power Quality Eng., Anhui Univ., Hefei, China
fYear :
2012
fDate :
21-24 Oct. 2012
Firstpage :
1
Lastpage :
5
Abstract :
The three-level neutral-point-clamped (3L-NPC) VSC is used to reduced the harmonics and to achieve high-voltage, high-power capability but the unequal power loss distribution among the semiconductor devices limits the maximum output power and switching frequency. Firstly, this paper is focused on calculating the each semiconductor power losses of SPWM 3L-NPC VSC under different loads, power factors and modulation indices to show the unequal power losses distribution. Secondly, a control strategy used in three-level active neutral-point-clamped (3L-ANPC) VSC is proposed, which is based on the relationship between load current and switching energy, conduction voltage. Some simulation results are shown to validate the analysis of the power losses distribution in 3L-NPC and the loss-balancing control in 3L-ANPC.
Keywords :
PWM power convertors; losses; power control; power conversion harmonics; SPWM 3L-NPC VSC; harmonic reduction; semiconductor power losses; three-level neutral point clamped VSC; unequal power losses distribution control; voltage source converter; Junctions; Modulation; Power conversion; Switches; Switching loss; 3L-ANPC; 3L-NPC; control; unequal power loss distribution;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2012 15th International Conference on
Conference_Location :
Sapporo
Print_ISBN :
978-1-4673-2327-7
Type :
conf
Filename :
6401742
Link To Document :
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