Neutral Point Voltage-Balanced Control Method Based on Discontinuous Pulse Width Modulation for a NPC 3-level Inverter

被引：0
|
作者：
An, Shaoliang [1 ]
Lai, Lu [1 ]
Sun, Xiangdong [1 ]
Zhong, Yanru [1 ]
Ren, Biying [1 ]
Zhang, Qi [1 ]
机构：
[1] Xian Univ Technol, Dept Elect Engn, Xian, Peoples R China
来源：
2015 9TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND ECCE ASIA (ICPE-ECCE ASIA) | 2015年
关键词：
Grid-connected inverter; neutral point voltage-balanced control; two-phase modulation; three-level; PWM SCHEME;
D O I：
暂无
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：
A neutral point voltage-balancing control algorithm is proposed for a neutral-point-clamped (NPC) three-level photovoltaic (PV) grid-connected inverter. The mathematical model of the neutral point current was deduced. The influence on the neutral point voltage for discontinuous pulse width modulation(DPWM) methods was analyzed. Comparison of the error between feedback neutral point voltages and the hysteresis width was used to choose a DPWM method to control the neutral point voltage. Simulation and experimental results verify the correctness and validity of the proposed neutral point voltage-balancing control algorithm.
引用
收藏
页码：2820 / 2825
页数：6
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