| 基于单片机的1kW多级型光伏逆变器的研究 |
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| 引用本文： | 冀玉丕,谢运祥.基于单片机的1kW多级型光伏逆变器的研究[J].低压电器,2011(17):19-23. |
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| 作者姓名： | 冀玉丕 谢运祥 |
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| 作者单位： | 华南理工大学,广东广州,510640 |
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| 摘 要： | 研究了1 kW多级型光伏逆变电源。前级使用Buck电路来实现最大功率跟踪（MPPT）;中间推挽电路采用SG3525来控制。针对传统的单电压控制的逆变电源在非线性负载时,输出波形畸变严重、谐波含量大的缺点,提出逆变部分电容电压、电容电流双闭环控制策略,利用单片机实现了数字PI控制。试验验证了多级型光伏逆变器的实用性。
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| 关 键 词： | 光伏逆变器 多级型拓扑 最大功率跟踪 数字PI控制 双环控制 |
Research on Multi-Stage Photovoltaic Inverter Based on Microcontroller |
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| JI Yupi,XIE Yunxiang.Research on Multi-Stage Photovoltaic Inverter Based on Microcontroller[J].Low Voltage Apparatus,2011(17):19-23. |
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| Authors: | JI Yupi XIE Yunxiang |
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| Affiliation: | JI Yupi,XIE Yunxiang(South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | A 1 kW multi-stage photovoltaic inverter power supply was researched.The first stage uses Buck circuit to achieve MPPT;the middle push-pull circuit uses SG35725 to control.When the traditional single voltage controlled inverter power supply works in nonlinear loads,the output waveform has a large serious harmonic distortion.Based on it,a capacitor voltage and capacitor current double closed loop control strategy was proposed,using microcontroller to realize the digital PI control.The correctness of the anal... |
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| Keywords: | photovoltaic inverter multi-step topology MPPT digital PI control dual-loop control |
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