【作者】 孙鹏；

【导师】 樊印海；

【作者基本信息】 大连海事大学 ， 电力电子与电力传动， 2007， 硕士

【摘要】 太阳能作为一种巨量的可再生能源，是目前大量应用的化石能源的主要替代能源之一，是人类可利用的最直接的清洁能源之一，因此开发利用太阳能具有重大的战略意义。本文设计并研制了一台独立的太阳能光伏逆变电源，结构简单、低成本、效率高、数字化控制及显示，输出电压的质量高，系统的动态响应速度快。 本系统包括太阳能电池直流充电系统和逆变系统两大部分。在充电器设计部分，介绍了太阳能电池输出特性及蓄电池充电特性，并在此基础上设计了两阶段恒压充电的充电策略，即实现了太阳能电池的最大功率输出，又对蓄电池进行了合理地充电。主电路以Boost电路形式实现了蓄电池充电控制的设计。 在逆变器设计部分，本文总结了通常采用的电路拓扑并比较了各自优缺点，采用了“全桥逆变+高频升压+LC滤波”的设计策略，实现电路简单、成本低、易于控制。然后，本文详细介绍了主电路及其参数选择的原理及公式，并确定了实验用样机的参数。 控制电路设计采用了双核AVR微处理器ATmega16L控制，构成主／从机模式。逆变电路采用单极性SPWM调制方式，设计了电压电流双闭环反馈控制稳定输出交流电压。文中详细地介绍了电压电流双闭环控制的原理和结构设计，并建立了全桥逆变电路的连续状态空间数学模型和离散状态空间数学模型，利用MATLAB／Smulink对控制系统进行了仿真分析。结合样机试验，得到输出电压正弦度高、稳定性好，负载突变时系统动态响应速度得到大大提高，符合了设计目的。 此外对辅助电源、保护电路以及系统抗干扰技术也做了较详细的介绍。更多还原

【Abstract】 The energy of sun is a huge self-born resource, is one of the main substitute of petrifaction resource largely used at present , is one of cleanly resource available by human. Therefore, the exploiture of the energy of sun has a great strategic meaning. This thesis has designed a unattached photovoltaic inverter. The inverter is low cost、 high-efficiency, has a simple structure、digital control and display. The output voltage has a high quality and the speed of dynamic response is quickly.The whole system includes two parts, one is direct current charge system of solar battery, another is inversion system. In the charger research part, this thesis has introduce the deferent characteristic of solar battery and the charge characteristic of storage cell in detail, and works out a double phase unvarying voltage strategy for charging up depends on the characteristics of solar battery and storage cell. The strategy not only realizes the maximum power output of solar battery, but also electricizes storage cell correctly. The main circuit is constructed by the circuit topology of Boost Chopper to achieve the design of charge control for storage cell.In the inversion part, the thesis summarizes usual circuit structure and compares each advantages and disadvantages, choose the design policy of "full-bridge converter+ high frequency increase voltage+ LC filtering", this design constructs the circuit easily, makes the cost lower and make the system easy to control. And then, this thesis introduces the principle and expressions of the main circuit and its parameters choice, and makes sure the simulant machine’s parameters used in experiment.The control system uses double core of AVR microprocessor named ATmega16L to control the inverter, the two MCU make up of master/slave model. The inverter uses single polarity SPWM to modulate the sine wave signal, devises double closed loops of voltage and current feedback to control the output voltage steadily. The thesis introduces the principle and configuration of double closed loops of voltage and current feedback detailedly, and sets up the continuous mathematics former and the discrete mathematics former of full bridge converter’s status space, also uses the MATLAB/Sim-更多还原