本文關(guān)鍵詞： 光伏電池 蓄電池 市電 工作模式 能量管理策略　出處：《電子科技大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：在不可再生能源的日益枯竭的情況下,當(dāng)前各個(gè)國家都把研究的焦點(diǎn)集中在了太陽能上。由于光伏電池的輸出功率受到光照強(qiáng)弱和外界環(huán)境的干擾,因此需要加入輔助電源。本文將光伏電池、蓄電池和市電同時(shí)結(jié)合起來,提出了一種新穎的獨(dú)立光伏系統(tǒng)和市網(wǎng)相結(jié)合的聯(lián)合供電方式。本文針對不同的外部環(huán)境,提出了一種合理的具有五種工作模式的能量管理策略,使系統(tǒng)能夠在任何情況下都能穩(wěn)定運(yùn)行。即當(dāng)光伏電池功率充足時(shí),則為負(fù)載供電的同時(shí)向蓄電池充電。當(dāng)光伏電池功率不夠時(shí),由光伏電池與蓄電池聯(lián)合向負(fù)載供電。當(dāng)光伏電池與蓄電池都不足以向負(fù)載供電時(shí),由市網(wǎng)單獨(dú)供電。該過程的具體實(shí)現(xiàn)是通過邏輯開關(guān)單元和能量管理電路產(chǎn)生相應(yīng)的選通信號(hào)使電路中的能量流實(shí)現(xiàn)單向變換,雙向變換,逆變以及切換,完成對能量的優(yōu)化配置。本文所做的主要工作如下:首先設(shè)計(jì)了該系統(tǒng)的電路拓?fù)?并對拓?fù)渲懈鱾�(gè)模塊的工作原理進(jìn)行了詳細(xì)分析,包括Boost電路、雙向Buck-Boost變換電路、切換電路以及逆變電路;其次,結(jié)合光伏電池與蓄電池的工作原理提出了系統(tǒng)的五種工作模式,對每種工作模式下的電路都提出了具體的控制方案。除此之外,針對系統(tǒng)的需求,本文還對逆變的電壓電流雙環(huán)控制及鎖相控制進(jìn)行了簡明的分析,并針對系統(tǒng)的工作模式對主電路進(jìn)行了硬件參數(shù)設(shè)計(jì)和軟件設(shè)計(jì)以及相應(yīng)的軟硬件仿真。最后在實(shí)驗(yàn)平臺(tái)上進(jìn)行了實(shí)驗(yàn)驗(yàn)證,實(shí)驗(yàn)的結(jié)果證明了系統(tǒng)結(jié)構(gòu)的合理性與能量管理策略的可行性。
[Abstract]:With the increasing depletion of non-renewable energy, many countries are focusing on solar energy. Because the output power of photovoltaic cells is affected by the intensity of light and the outside environment, Therefore, it is necessary to add auxiliary power supply. This paper combines photovoltaic cells, batteries and municipal power, and proposes a novel combined power supply mode of independent photovoltaic system and municipal grid. A reasonable energy management strategy with five working modes is proposed to enable the system to operate stably under any circumstances, that is, when the power of photovoltaic cells is sufficient, When the power of the photovoltaic cell is not enough, the photovoltaic cell and the battery are combined to supply the load. When the photovoltaic cell and the battery are not enough to supply the load, This process is realized by the logic switch unit and the energy management circuit to generate the corresponding strobe signal to make the energy flow in the circuit realize unidirectional transformation, bidirectional transformation, inversion and switching. The main work of this paper is as follows: firstly, the circuit topology of the system is designed, and the working principle of each module in the topology is analyzed in detail, including Boost circuit, bidirectional Buck-Boost transform circuit, and so on. Switching circuit and inverter circuit. Secondly, combining the working principle of photovoltaic cell and battery, the paper puts forward five working modes of the system, and puts forward the specific control scheme for the circuit under each working mode. According to the demand of the system, this paper also analyzes the voltage and current double loop control and the phase-locked control of the inverter. The hardware parameters and software of the main circuit are designed according to the working mode of the system, and the corresponding software and hardware simulation are carried out. Finally, the experiment is carried out on the experimental platform. The experimental results show the rationality of the system structure and the feasibility of the energy management strategy.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM914.4;TM46

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