基于FPGA的太阳能MPPT算法实现的研究

Research on Max Power Point Tracking for PV Based on FPGA

最大功率点跟踪(MPPT)算法是太阳能发电系统常用的控制算法,大多数系统利用微控制单元(MCU)实现。在此利用现场可编程门阵列(FPGA)实现了一种低成本的太阳能MPPT的电路,探讨了系统硬件的组成、各功能部分接口实现的方法。用Verilog语言实现了ADC控制器、乘法器、MPPT算法及PWM波波形发生器,并通过Modelsim平台对设计电路进行了仿真,最后在CycloneII系列EP2C8Q208C8芯片上实现下载。实验结果表明电路工作正常,达到了设计要求,为太阳能发电系统的系统级芯片(SoC)控制打下了基础。

The aximum power point tracking（MPPT）algorithm is widely used in solar power generation systems,but many of them are based on MCU.This paper introduces a new low-cost method which utilizes field programmable gate array（FPGA） to achieve solar maximum power point.It discusses hardware components of the system structure as well as connection way between the function modules.The ADC controller,multiplier,MPPT algorithm and PWM wave generator are completed by Verilog on QuartusII 6.0,simulating on the Modelsim and downloading the design to Cyclone II series EP2C8Q208C8 chip,the results show the new system works well and achieves the expected goal.To some extend,it also can be considered as a foundation of solar power generation based on SoC.