DC-Link Voltage Ripple Compensation for Multilevel Active-Neutral-Point-Clamped Converters Operated With SHE-PWM

被引：31
|
作者：
Pulikanti, Sridhar R. [1 ]
Konstantinou, Georgios [2 ,3 ]
Agelidis, Vassilios G. [2 ,3 ]
机构：
[1] Univ Wollongong, Sch Elect Comp & Telecommun Engn, Wollongong, NSW 2522, Australia
[2] Univ New S Wales, Australian Energy Res Inst, Sydney, NSW 2052, Australia
[3] Univ New S Wales, Sch Elect Engn & Telecommun, Sydney, NSW 2052, Australia
来源：
IEEE TRANSACTIONS ON POWER DELIVERY | 2012年 / 27卷 / 04期
关键词：
Active neutral point clamped converter (ANPC); dc-ac power conversion; multilevel converter; selective harmonic elimination; pulsewidth modulation; BALANCING CONTROL; NPC CONVERTER; INVERTER;
D O I：
10.1109/TPWRD.2012.2209207
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents a dc-link voltage ripple compensation method for flying-capacitor (FC)-based active neutral-point-clamped multilevel converters operating under selective harmonic elimination pulsewidth modulation. The method is based on feedforward modification of the modulation index according to the ripple on the dc-link voltage, effectively altering the switching control functions. The low-order harmonics in the output due to the presence of the dc-link ripple are eliminated. In addition, a control strategy that actively regulates the flying capacitor voltages of each phase to the reference value and controls the neutral point voltage deviation is implemented. The performance of the dc ripple harmonic compensation method and regulation strategies are evaluated through simulation and experimental results from a three-phase, five-level laboratory prototype.
引用
收藏
页码：2176 / 2184
页数：9
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