基于DSP的小功率风光互补逆控一体机的研究与设计

发布时间：2018-06-10 12:22

本文选题：DSP + 风光互补　；参考：《昆明理工大学》2014年硕士论文

【摘要】：随着可持续发展战略和建设能源节约型社会观念的深入人心,风能和太阳能等新能源的利用规模也越来越大,特别是在我国偏远的山区、草原以及孤岛等不通市电的地区。科技的进步和人们用电要求的不断提高,使得常用的单一提供直流电或者交流电的直流风光互补控制器和逆变器,显然很难满足使用安全、操作简便、功能齐全的要求。因此,研制出一种既能供低压直流负载和标准市电交流负载同时使用,又能改善风能和太阳能利用效率且人机交互简便地风光互补逆控一体机,具有十分重要的市场价值和应用前景。本文以小功率的风光互补逆控一体机为设计目标,采用TI公司的DSP芯片TMS320F2812作为控制中心,在Altium Designer Winter09里完成逆控一体机的硬件电路设计,使用C语言在集成开发环境Code Composer Studio里进行软件编程,实现对风光互补逆控一体机的控制,设计了一个体积小、直流充／放电稳定、交流输出波形特性好、能源利用率和安全性能高、人机交互友好的风光互补逆控一体机。本设计首先通过对传统逆控一体机涉及到的风光互补发电系统和逆变系统,及二者的核心控制最大功率点跟踪MPPT和SPWM逆变技术进行了简单的介绍,引出了本设计逆控一体机的总体结构,并分别对构成本设计逆控一体机的风光互补控制器和逆变器的结构和工作原理进行了阐述,给出了本设计逆控一体机的主要外围器部件的选型和相关参数。其次,本文详细论述了逆控一体机的硬件电路实现——主电路拓扑设计和辅助模块化电路设计。逆控一体机的主电路设计按照电能的流动方向依次展开,逆变电路的设计放弃技术较为成熟先直流高频升压再逆变的逆变策略,尝试采用低压逆变再工频升压的方式。最后详细阐述了逆控一体机中控制器的最大功率点跟踪MPPT、电流电压模糊自整定PID控制和逆变器中SPWM的具体实现方法,给出了软件流程图。根据上述设计,本文进行了样机的制作并开发了一套测试平台对样机进行了实际测试验证,测试验证结果表明,本设计的逆控一体机控制器样机直流负载部分运行优良,逆变器部分正弦波输出电压与频率稳定,带载能力稳定,达到了设计目标。显然,应用本设计方法,可大大降低此类设备的电路复杂度和生产成本,提高应用此类设备的太阳能和风能的利用效率,解决了由风光互补控制器和逆变器二者连接应用所带来的使用复杂、安全性低、生产成本较高的问题,从而也延长了产品的使用寿命。
[Abstract]:With the sustainable development strategy and the idea of building energy-saving society, the scale of new energy, such as wind energy and solar energy, is becoming larger and larger, especially in the remote mountainous areas, grasslands and isolated islands in China. With the development of science and technology and the continuous improvement of people's demand for electricity, it is obviously difficult to meet the requirements of safe operation, simple operation and complete function because of the common single DC wind complementary controller and inverter which provide DC or AC power. Therefore, we have developed a new integrated wind and solar power system, which can be used for both low voltage DC load and standard AC load, and can improve the utilization efficiency of wind and solar energy. It has very important market value and application prospect. This paper takes the small power wind complementary inverse control integrated computer as the design goal, uses TI's DSP chip TMS320F2812 as the control center, and completes the hardware circuit design of the inverse control integrated computer in Altium designer Winter09. C language is used for software programming in Code composer Studio, which realizes the control of the wind complementary inverse control integrated computer. A small volume, stable DC charge / discharge and good AC output waveform characteristics are designed. High energy efficiency and safety performance, human-computer interaction friendly wind complementary inverse control integrated machine. This design first of all through the traditional inverse control system involved in the wind complementary generation system and inverter system, The MPPT and SPWM inverter technology of the core control MPPT and SPWM are introduced, and the overall structure of the integrated inverse control machine is introduced. The structure and working principle of the wind complementary controller and inverter which constitute the integrated inverse control machine are described respectively, and the selection of the main peripheral parts and the related parameters of the integrated inverse control machine are given. Secondly, This paper discusses in detail the realization of the hardware circuit of the integrated inverse control machine-the topology design of the main circuit and the design of the auxiliary modularized circuit. The main circuit design of the integrated inverter is carried out in turn according to the flow direction of the electric energy. The design of the inverter circuit gives up the technology of DC high frequency boost and then the inverter strategy, and attempts to adopt the low voltage inverter and the power frequency boost mode. At last, the realization methods of MPPTT, fuzzy self-tuning pid control of current and voltage and SPWM in inverter are described in detail, and the software flow chart is given according to the above design. In this paper, the prototype is made and a set of test platform is developed to test the prototype. The test results show that the DC load part of the prototype of the reverse control integrated controller is running well. The output voltage and frequency of partial sinusoidal wave of inverter are stable, and the load capacity of inverter is stable. Obviously, the application of this design method can greatly reduce the circuit complexity and production cost of such equipment, and improve the utilization efficiency of solar and wind energy. The problems of complex use, low safety and high production cost brought by the application of wind complementary controller and inverter are solved, thus prolonging the service life of the product.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM61

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