← 返回

针对中点电压不平衡的双输入三电平T型逆变器共模电压抑制的载波基不连续空间矢量脉宽调制

A Carrier-Based Discontinuous Space-Vector PWM for Common-Mode Voltage Reduction in Dual-Input Three-Level T-Type Inverters With Unbalanced Neutral-Point Voltages

语言:

中文摘要

针对双输入三电平T型逆变器在中点电压不平衡时共模电压(CMV)升高的问题,本文提出了一种新型不连续空间矢量脉宽调制(RCMV-DSVPWM)策略。通过分析不平衡中点电压下的矢量CMV特性,重构空间矢量图并优化开关序列,有效降低了系统的共模电压。

English Abstract

With unbalanced neutral-point (NP) voltages, the common-mode voltage (CMV) will be increased in dual-input three-level (3L) T-type inverters. Therefore, in this article, a novel discontinuous space-vector pulsewidth modulation for CMV reduction (RCMV-DSVPWM) is proposed. First, the CMV of vectors is analyzed considering unbalanced NP voltages. New space vector diagrams are obtained by abandoning v...
S

SunView 深度解读

该技术直接应用于阳光电源的核心产品——三电平T型组串式逆变器及储能PCS。在光伏发电和储能系统中,中点电压平衡控制是提升电能质量和系统可靠性的关键。通过引入RCMV-DSVPWM策略,可有效降低漏电流,减少对电网的电磁干扰,并提升系统在复杂工况下的稳定性。建议研发团队在下一代高功率密度组串式逆变器及PowerTitan系列储能变流器中评估该算法,以优化EMI性能并降低对滤波器的设计要求。