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针对直流侧电压不平衡的三电平逆变器解析式不连续空间矢量PWM

An Analytical Discontinuous Space-Vector PWM for Three-Level Inverters With Unbalanced DC-Link Voltages

语言:

中文摘要

针对三电平逆变器直流侧电压不平衡问题,传统PWM调制会导致谐波增加及线性调制范围缩小。本文提出一种解析式不连续空间矢量PWM(DSVPWM)策略,旨在抑制输出谐波、最大化线性调制范围,并有效降低开关损耗。

English Abstract

When faced with unbalanced dc-link voltages of three-level inverters, extra harmonics will be generated with reduced linear modulation region if the conventional pulsewidth modulation (PWM) for balanced dc-link voltages is adopted. In this article, in order to suppress output harmonics and maximize the linear modulation region, as well as to reduce switching losses, the discontinuous space-vector ...
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SunView 深度解读

该技术对阳光电源的组串式及集中式光伏逆变器具有重要意义。在大型地面电站或工商业项目中,由于光伏组串遮挡、老化不一致或电容参数偏差,直流侧电压不平衡现象时有发生。该解析式DSVPWM策略能够直接优化逆变器在非理想工况下的输出质量,提升系统效率并降低开关损耗。建议研发团队将其集成至iSolarCloud智能运维平台及逆变器控制固件中,以增强设备在复杂环境下的电能质量控制能力,进一步巩固阳光电源在高性能逆变器市场的技术领先地位。