基于STM32的单相光伏并网发电系统

周红标; 应根旺; 蒋恒; 郑潮中

周红标,应根旺,蒋恒,郑潮中.基于STM32的单相光伏并网发电系统[J].电测与仪表,2015,52(19):.
zhou hongbiao,YING Genwang,JIANG Heng,ZHENG Chaozhong.Design of Photovoltaic Grid-connected System based on STM32[J].Electrical Measurement & Instrumentation,2015,52(19):.

基于STM32的单相光伏并网发电系统

Design of Photovoltaic Grid-connected System based on STM32

DOI：

中文关键词: 单相光伏并网 STM32 电导增量法主动频率偏移法

英文关键词:single-phase photovoltaic grid-connection STM32 incremental conductance method active frequency drift

基金项目:国家自然科学基金项目；淮安市科技支撑项目(HAG2011062)

作者中文名	作者英文名	单位
周红标	zhou hongbiao	淮阴工学院电子与电气工程学院
应根旺	YING Genwang	淮阴工学院电子与电气工程学院
蒋恒	JIANG Heng	淮阴工学院电子与电气工程学院
郑潮中	ZHENG Chaozhong	淮阴工学院电子与电气工程学院

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中文摘要:

提出了一种基于STM32的单相光伏并网发电系统的设计方案。首先建立了基于电导增量法的最大功率点跟踪和基于主动频率偏移法的孤岛效应检测的数学仿真模型，然后以STM32为核心处理器，采用锁相环技术与电网电压前馈补偿的复合控制策略，结合BUCK充电控制电路、交错反激变换电路、全桥逆变电路、信号适配电路和信号检测电路，实现了样机设计。测试结果表明：样机运行稳定、可靠，谐波含量THD和孤岛检测耗时均在相关标准要求范围内。

英文摘要:

A single-phase PV (PhotoVoltaic) grid-connected system based on STM32 is proposed. Firstly, the mathematical simulation model of maximum power point tracking based on incremental conductance method and islanding detection based on active frequency drift is established, and then, the prototype,which using STM32 as the core processor, adopting composite control strategy based on PLL and grid voltage front feed-forward compensation, including BUCK charge control circuit, interleaved flyback converter circuit, full-bridge inverter circuit, signal adaptation and detection circuit, is designed. Test results show that: the prototype is stable, reliable, and harmonic content THD and islanding detection time consuming meets the required of relevant standards.

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