独立光伏发电混合储能创新实验平台的研制

Study on Innovation Experiment Platform of Hybrid Energy Storage in Stand-Alone PV Power Generation

为提高电气信息类学生创新实践能力,研制1kW的独立光伏发电混合储能创新实验平台.该平台由光伏模拟器及最大功率点跟踪(MPPT)控制器、蓄电池及双向DC/DC变换器、超级电容器及双向DC/DC变换器等组成,控制系统由STM32F407开发板和μC/OS-II系统框架下的模块化软件程序组成.详细阐述各个模块的功能和特点,并在光照强度和负载突变情况下,针对直流母线双闭环控制、混合储能系统(HESS)的协调控制算法进行MATLAB仿真分析和实验结果验证,结果表明,光照强度和负载突变情况下直流母线可以维持稳定,实现HESS的优化控制.该实验平台光照强度和遮阴效果可编程,软硬件模块化,能够有效提高学生的实践动手能力.

In order to improve the electrical and information students’practical ability,a 1 kW experimental platform of hybrid energy storage system(HESS)in stand-alone PV power generation is developed.The platform consists of photovoltaic simulator,maximum power point tracking(MPPT)controller,battery and bidirectional DC/DC converters,super capacitors and bidirectional DC/DC converters,etc.The control system consists of the ARM STM32F407 and the modular software program under the framework ofμC/OS-II system.T he functions and characteristics of each part are described in detail.Under the condition of sudden change of light intensity and load,the coordinated control algorithm of DC busbar double closed loop control and HESS is simulated by MATLAB/Simulink and verifi ed by experimental results.The results show that the DC bus can be kept stable under the condition of light intensity and load mutation,and the optimal control of HESS is realized.The light intensity and shading eff ect of the experimental platform are programmable,and the software and hardware are modularized,which can effectively improve the students’practical ability.