【作者】 刘刚；

【导师】 吴建华；

【作者基本信息】 东北大学 ， 电气工程（专业学位）， 2012， 硕士

【摘要】 太阳能作为一种可再生能源,具有洁净无污染,可持续利用的优点,而光伏发电称为其中重要的研究领域。由于控制系统是太阳能发电系统的核心部分和使用太阳能的关键部分,因此在太阳能发电系统的研究中对控制算法和控制装置的研究显得尤为重要。本文以太阳能发电控制系统为研究对象,对其中的控制算法问题,包括光伏阵列模型的建立、DC-DC变换器和DC-AC变换器的控制策略进行了深入研究；控制装置部分,本文以Cyclone Ⅱ EP2C35F6762CN型FPGA为核心控制器,对整个控制装置进行了综合设计和整体实现。光伏阵列应用特性是太阳能光伏发电系统中的最基本问题,本文在厂家提供的常见参数基础上,提出了光伏阵列的工程模型,该模型能复现光伏阵列在任意温度及光强下的特性,为电路仿真和控制系统的实现提供了基础。本文将一种新型“无模型”算法—-I-PI(智能PI)算法应用在了太阳能发电的控制系统中,分析了I-PI算法的原理,证明I-PI算法应用到太阳能发点控制系统中的可行性。本文利用I-PI算法控制DC-DC变换器,并且提出了在线PSO算法优化I-PI参数,在优化过程中避免了对变换器的建模,从而实现真正的“无模型”控制；仿真对比了在变换器模型失配时PID算法和I-PI算法的控制效果,结果表明I-PI算法的鲁棒性更好,控制效果更稳定。最后,本文以Cyclone Ⅱ EP2C35F6762CN型FPGA为核心控制器,设计和实现了以AD7606为核心芯片的采样电路,以TLP520为核心芯片的功率驱动电路和各个变换器的主电路；并且将I-PI算法成功的应用到了实际降压变换器和升压变换器的控制系统中,得到了实际的波形输出,从而验证了以I-PI控制算法和以Cyclone Ⅱ EP2C35F6762CN型FPGA为核心控制器的控制装置可以成功的应用在太阳能发电控制系统中。更多还原

【Abstract】 As an important part of solar energy application, the technology of PV generation is considered as the most potential power generation of the21th century. The control system is a core part of the solar power system and the use of solar energy a key part of the paper of control algorithms and control devices in the paper of solar power systems is partuilarly important.Solar power control system for the paper, the control algorithms, including the model of the PV array, DC-DC converter and DC-AC converter control strategy carried out in-depth study, Cyclone Ⅱ EP2C35F6762CN type FPGA as the core controller, integrated design and overall implementation of the entire control device.The application characteristics of the PV array is the most fundamental problems in the solar photovoltaic system in the common parameters provided by the manufacturer on the basis of the engineering model of the PV array, the model is able to replicate the existing PV array at any temperature and light. The following characteristics, circuit simulation and control system provides the basis. This article describes a new’model’algorithm I-PI algorithm successfully used in solar power control system, the principle of the I-PI algorithm, simulation results show that, int the tracking of arbitrary waveform, I-PI algorithm better dynamic performance, steady-state error is smaller.In this paper, I-PI algorithm to control the DC-DC converter, nd use the online PSO algorithm to optimize the parameters of I-PI algorithm. In the process of optimization to avoid the modeling of the converter structure, in order to achieve real’Model-free’control. Compared to the control effect of the PID algorithm in the converter model mismatch and I-PI algorithm, simulation results show the robustness of the I-PI algorithm to better control effect with stability.Finally, the Cyclone II EP2C35F6762CN FPGA as the core controller, designed and implemented the core chip AD7606is sampling circuit, power driver circuit consists of TLP520-core chip and main circuit of the converter, and I-PI algorithm successfully applied to the buck converter and boost converter control system, the actual waveform output in order to verify the I-PI control algorithm and control device to the Cyclone II EP2C35F6762CN FPGA as the core controller can successful application of solar power control system.更多还原