| 引用本文: | 郑飞,费树岷,周杏鹏.基于DSP和FPGA的光伏并网控制器设计与实现[J].电力自动化设备,2011,31(2): |
| ZHENG Fei,FEI Shumin,ZHOU Xingpeng.Design and implementation of photovoltaic grid-connection controller based on DSP and FPGA[J].Electric Power Automation Equipment,2011,31(2): |
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| 摘要: |
| 提出一种DSP和现场可编程门阵列（FPGA）双CPU结构的新型单相光伏并网控制方案。DSP负责基于压频转换器的高精度数据采集、最大功率点跟踪算法和电压控制环,并将计算出的最大功率点跟踪电流通过串行外围设备接口（SPI）通信方式传送给FPGA；FPGA负责新型电网电压数字锁相环算法、电流环无差拍控制和正弦脉宽调制（SPWM）驱动算法，并通过光耦HCPL-316J驱动电路控制逆变器各桥臂开关的通断。该方案被应用于一台5 kW单相光伏并网逆变器中。实验表明：该控制器集DSP快速运算性能和 FPGA的高可靠性于一体，并网运行性能好。 |
| 关键词: 单相光伏并网 现场可编程门阵列 压频转换 数字锁相环 驱动电路 |
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| Design and implementation of photovoltaic grid-connection controller based on DSP and FPGA |
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ZHENG Fei, FEI Shumin, ZHOU Xingpeng
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Key Laboratory of Measurement and Control of CSE，Ministry of Education，
Southeast University，Nanjing 210096，China
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| Abstract: |
| A single-phase PV（PhotoVoltaic） grid-connection control scheme based on DSP and FPGA（Field -Programmable Gate Array） is proposed. The DSP is responsible for the voltage-frequency-conversion-based high-accuracy data acquisition，MPPT（Maximum Power Point Tracking） and voltage control loop. It transmits the calculated MPPT current to FPGA via serial peripheral interface. FPGA is responsible for the grid -voltage digital phase-locked loop，current deadbeat control and SPWM drive algorithm. It controls the on-off of inverter arm switches via the drive circuit based on HCPL-316J optical coupler. The proposed scheme is applied to a 5 kW single-phase PV grid-connected system and experiments show that，the controller integrates the fast computing capability of DSP with the high reliability of FPGA，resulting in excellent grid-connected operating performance. |
| Key words: single-phase photovoltaic grid-connection field-programmable gate array voltage-frequency conversion digital phase-locked loop drive circuit |
