A simple DC-Link Voltage Balancing Strategy for NPC Three-level Inverters

被引：0
|
作者：
Foti, S. [1 ]
Khan, H. H. [2 ]
Testa, A. [1 ]
Di Tommaso, A. Oscar [3 ]
Miceli, R. [3 ]
Nevoloso, C. [3 ]
机构：
[1] Univ Messina, Messina, Italy
[2] Univ Sch Adv Studies IUSS, Pavia, Italy
[3] Univ Palermo, Palermo, Italy
来源：
2023 25TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS, EPE'23 ECCE EUROPE | 2023年
关键词：
3-Level NPC; Two-level inverters (TLIs); Capacitor voltage balancing; Total Harmonic Distortion; Pulse Width Modulation (PWM); RECTIFIER;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Three-level neutral point clamped PWM inverters overcome some limitations of two-level inverters in medium voltage applications, leading to lower device ratings and greater efficiency. However, they are burdened by an intrinsic drawback of the neutral point clamped structure, which causes, under some operating conditions, a voltage imbalance of the DC link capacitors. In this paper, such an issue is faced on a system driven by a dual-carrier PWM strategy through a simple hysteretic control. The proposed technique features a very low computational burden and does not need additional power circuits or sensors. It is first presented theoretically, then its performance is evaluated through simulations.
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页数：8
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