太阳能专用电源的研究与设计
发布时间：2018-10-14 14:13
【摘要】：传统能源的逐渐枯竭以及环境的日益恶化严重制约了世界经济的发展,人类已经迫不及待寻求可再生的绿色能源来代替传统能源。太阳能因其清洁环保,永不衰竭的特点,使得太阳能发电技术越来越受到人们的青睐。为了最大化利用太阳能,提高太阳能发电系统的效率以及蓄电池充电效率,实现交直流负载的不间断供电,本文提出并设计了一种太阳能为主、市电为辅的双输入通道专用电源。本文的主要内容和研究成果如下：(1)分析了太阳能专用电源关键技术的工作原理、研究现状及应用。(2)设计了双输入通道专用电源系统架构。通过比较分析不同拓扑的结构特点,确定太阳能通道以三相交错并联BUCK变换器作为主拓扑,市电通道以ZVS移相全桥变换器作为主拓扑,分析了两路变换器的工作状态并设计了硬件电路,给出了主电路元器件参数计算以及选型。完成了变换器的隔离驱动、保护以及信号采样等电路的设计。(3)针对太阳能通道和市电通道在直流母线处的功率平衡控制,提出了电压外环和电流内环的双闭环控制策略,分别对两路变换器的输出功率进行协调控制。通过对BUCK变换器进行小信号建模分析,根据其开环特性的不足,引入双闭环控制,有效地控制变换器的输出电压和电流,实现对蓄电池的充放电和负载供电。(4)基于STM32F103VET6设计了一套控制系统,给出了整个系统的工作流程、蓄电池管理任务控制流程、太阳能电池最大输出功率控制流程,以及相应的控制程序。(5)研制了一台太阳能专用电源样机,并对样机进行测试,结果表明该样机各项工作指标均符合设计要求。
[Abstract]:The depletion of traditional energy and the worsening of environment seriously restrict the development of the world economy. Human beings have been eager to find renewable green energy to replace traditional energy. Solar energy is more and more popular because of its clean and environmental protection. In order to maximize the use of solar energy, improve the efficiency of solar power generation system and battery charging efficiency, realize the uninterrupted power supply of AC / DC load, this paper proposes and designs a kind of solar energy. Special power supply with double input channels for auxiliary power supply. The main contents and research results of this paper are as follows: (1) the working principle, research status and application of the key technologies of the special solar power supply are analyzed. (2) the architecture of the dual input channel special power supply system is designed. By comparing and analyzing the structural characteristics of different topologies, it is determined that the three-phase staggered parallel BUCK converter is used as the main topology of the solar channel and the ZVS phase-shifted full-bridge converter is used as the main topology in the power channel. The working state of the two converters is analyzed and the hardware circuit is designed. The calculation and selection of the main circuit components are given. The isolation drive, protection and signal sampling of the converter are designed. (3) aiming at the power balance control of the solar energy channel and the city power channel at the DC bus, the double closed loop control strategy of the voltage outer loop and the current inner loop is proposed. The output power of the two converters is controlled in coordination. Based on the small signal modeling and analysis of BUCK converter, the output voltage and current of BUCK converter are effectively controlled by introducing double closed loop control according to its open loop characteristic. (4) Design a control system based on STM32F103VET6, give the whole system work flow, battery management task control flow, solar cell maximum output power control flow, And the corresponding control program. (5) A prototype of special solar power supply is developed and tested. The results show that each working index of the prototype meets the design requirements.
【学位授予单位】：浙江工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM615
本文编号：2270713
[Abstract]:The depletion of traditional energy and the worsening of environment seriously restrict the development of the world economy. Human beings have been eager to find renewable green energy to replace traditional energy. Solar energy is more and more popular because of its clean and environmental protection. In order to maximize the use of solar energy, improve the efficiency of solar power generation system and battery charging efficiency, realize the uninterrupted power supply of AC / DC load, this paper proposes and designs a kind of solar energy. Special power supply with double input channels for auxiliary power supply. The main contents and research results of this paper are as follows: (1) the working principle, research status and application of the key technologies of the special solar power supply are analyzed. (2) the architecture of the dual input channel special power supply system is designed. By comparing and analyzing the structural characteristics of different topologies, it is determined that the three-phase staggered parallel BUCK converter is used as the main topology of the solar channel and the ZVS phase-shifted full-bridge converter is used as the main topology in the power channel. The working state of the two converters is analyzed and the hardware circuit is designed. The calculation and selection of the main circuit components are given. The isolation drive, protection and signal sampling of the converter are designed. (3) aiming at the power balance control of the solar energy channel and the city power channel at the DC bus, the double closed loop control strategy of the voltage outer loop and the current inner loop is proposed. The output power of the two converters is controlled in coordination. Based on the small signal modeling and analysis of BUCK converter, the output voltage and current of BUCK converter are effectively controlled by introducing double closed loop control according to its open loop characteristic. (4) Design a control system based on STM32F103VET6, give the whole system work flow, battery management task control flow, solar cell maximum output power control flow, And the corresponding control program. (5) A prototype of special solar power supply is developed and tested. The results show that each working index of the prototype meets the design requirements.
【学位授予单位】：浙江工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM615
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