单极性调制并网逆变器分析与设计  

作　　者：郑小朋 韩娜丽 钱明 贾俊强 

机构地区：[1]安徽城市管理职业学院轨道交通学院,合肥230011 [2]安徽工业大学电气与信息工程学院,安徽马鞍山243032

出　　处：《科技创新与应用》2024年第22期102-105,共4页Technology Innovation and Application

基　　金：2023年度安徽省高校自然科学研究重大项目(2023AH040206);2023年度安徽省高校自然科学研究重点项目(2023AH051501)。

摘　　要：面对愈加严峻的能源短缺和环境保护方面的压力,世界各国不断提高清洁能源供应占比,分布式发电技术逐步成为热点研究领域。逆变器作为电能变换的装置,是发电并网系统的关键环节,其可靠、高效能运行是当前重要的研究领域。该文以非隔离型单相并网系统为研究对象,通过分析并网逆变器工作原理,对全桥并网系统软硬件参数进行分析设计;在单极性调制基础上,考虑网压前馈进行逆变器电压电流控制系统设计;利用旋转坐标系,将加上信号滤波进行PLL控制设计。基于上述方案搭建并网逆变器样机,实测逆变器输出波形谐波含量低,频率幅值满足并网要求,实验证明设计方案的合理性、可行性、有效性。Faced with increasingly severe energy shortages and environmental protection pressures,countries around the world are continuously increasing the proportion of clean energy supply,and distributed power generation technology is gradually becoming a hot research field.Inverters,as the core device of distributed power generation grid connected systems,have high research and application value.This paper takes non isolated single-phase grid connected systems as the research object,and analyzes the working principle of grid connected inverters.By analyzing the topology and working principle of the inverter main circuit,the hardware parameters of the full bridge grid connected system are analyzed and designed;On the basis of unipolar modulation,consider grid voltage feedforward for the design of inverter voltage and current control system;.The experiment has proven the rationality,feasibility,and effectiveness of the design scheme.

关 键 词：并网逆变器 非隔离型 单极性 网压前馈 频率偏移法 

分 类 号：TM464[电气工程—电器]