基于模型设计方法的两级式光伏并网系统开发  

Development of Model-based Design of Double Stage Grid Connected PV System

作　　者：黄雷 HUANG Lei(Tianjin Key Laboratory of Information Sensing and Intelligent Control,Tianjin 300222,China;School of Electrical Engineering and Automation,Tianjin University of Technology and Education,Tianjin 300222,China)

机构地区：[1]天津市信息传感与智能控制重点实验室,天津300222 [2]天津职业技术师范大学自动化与电气工程学院,天津300222

出　　处：《电气传动》2020年第11期95-100,共6页Electric Drive

基　　金：天津市教委科研计划项目(JWK1617)。

摘　　要：为了提高光伏并网系统开发过程效率,解决DSP传统手动编程复杂、时间周期长的问题,提出了基于模型设计方法的光伏并网系统开发方法。首先在Matlab/Simulink下搭建了两级式光伏并网系统仿真模型:前级采用最大功率点追踪(MPPT)算法及Boost型DC/DC升压环节,后级采用三相全桥变流器实现有功功率及无功功率的分别调节,实现可靠并网。然后在对系统完成仿真验证的基础上,对嵌入式控制算法部分及外设建立Embedded Coder模型,实现了从Simulink模型到嵌入式代码的自动生成。最后将自动生成的代码在基于TMS320F28379D控制芯片的两级式光伏并网系统上进行了实验验证。实验结果及开发过程表明,这种基于模型设计的开发过程提升了Simulink建模的实用价值,降低了控制系统算法实现的难度,可以加速模型验证和项目开发。Aiming at the problem of complicated and time consuming programming of DSP code in PV based grid connected inverter,a model-based design development method was proposed to improve the efficiency of the control system development.Firstly,the double stage grid connected PV inverter system was developed under Matlab/Simulink environment,with the front stage a Boost type DC/DC converter adopting maximum power point tracking(MPPT)control and the second stage a three-phase full bridge converter realizing the independent control of the active power/reactive power and grid synchronization.Secondly,after the above model being verified in system level,the Embedded Coder model of the controller algorithm and peripherals was built to realize automatic embedded code generation.At last,the automatically generated code was downloaded directly to TI DSP TMS320F28379D to perform the experimental validation of the double stage PV system.The experimental results and design procedure show that this model-based methodology can improve the feasibility of the Simulink model,lower the difficulty during the code realization process and hence accelerate the design process.

关 键 词：光伏并网 基于模型的设计 自动代码生成 

分 类 号：TM615[电气工程—电力系统及自动化]