本文選題：三相四橋臂　切入點(diǎn)：有源電力濾波器　出處：《山東大學(xué)》2017年碩士論文

【摘要】：電力電子技術(shù)的迅猛發(fā)展及廣泛應(yīng)用,對(duì)工業(yè)發(fā)展、社會(huì)進(jìn)步所帶來(lái)的促進(jìn)作用不可否認(rèn),但其所引起的電力系統(tǒng)污染、電能質(zhì)量等問題同樣不容忽視。在我國(guó)低壓配電網(wǎng)三相四線制系統(tǒng)接線形式背景下,三相四線制有源電力濾波器正日益成為解決電網(wǎng)電能質(zhì)量問題的主流先進(jìn)手段之一。同時(shí),隨著功率開關(guān)器件的快速發(fā)展及現(xiàn)代智能控制理論的廣泛應(yīng)用,使得有源電力濾波補(bǔ)償技術(shù)日趨成熟化。本文從主電路拓?fù)浣Y(jié)構(gòu)、補(bǔ)償指令電流檢測(cè)算法及輸出電流跟蹤控制算法三部分對(duì)三相四線制四橋臂并聯(lián)型有源電力濾波器進(jìn)行了系統(tǒng)研究與設(shè)計(jì)。以三相四橋臂主電路拓?fù)浣Y(jié)構(gòu)為系統(tǒng)研究對(duì)象,建立了其在靜止abc坐標(biāo)系及αβ0三維坐標(biāo)系下的數(shù)學(xué)模型,分析了影響系統(tǒng)性能的各參數(shù)之間的耦合關(guān)系。以傳統(tǒng)瞬時(shí)功率理論為基礎(chǔ),給出了基于電壓旋轉(zhuǎn)矢量定向同步坐標(biāo)軸位置的補(bǔ)償指令電流檢測(cè)算法,確定了指令電流計(jì)算算式。同時(shí),以單相電壓型半橋逆變電路結(jié)構(gòu)為分析基礎(chǔ),結(jié)合瞬時(shí)電流直接控制基本思想給出了四橋臂并聯(lián)型有源電力濾波器輸出電流快速跟蹤控制方法,推導(dǎo)給出8路PWM脈沖寬度理論計(jì)算公式。該控制算法可降低控制算法的復(fù)雜度,節(jié)省CPU資源空間。為驗(yàn)證文中所提檢測(cè)算法及控制策略的正確性,本文基于MATLAB/Simulink仿真實(shí)驗(yàn)平臺(tái)對(duì)四橋臂并聯(lián)型有源電力濾波器進(jìn)行了系統(tǒng)仿真與實(shí)現(xiàn),同時(shí)給出了相應(yīng)的軟硬件設(shè)計(jì)。最后,設(shè)計(jì)搭建了一臺(tái)以TMS320F28335 DSP為主控單元,容量為20KVA的模塊化試驗(yàn)樣機(jī),并進(jìn)行了相關(guān)實(shí)驗(yàn)。通過仿真與實(shí)驗(yàn)波形及相關(guān)數(shù)據(jù)分析驗(yàn)證所提控制算法行之有效,且具有控制簡(jiǎn)單、實(shí)時(shí)性好等優(yōu)點(diǎn)。
[Abstract]:The rapid development and wide application of power electronics technology can not be denied the promotion of industrial development and social progress, but the power system pollution and power quality caused by it can not be ignored.Under the background of three-phase four-wire system connection of low-voltage distribution network in China, three-phase four-wire active power filter is becoming one of the mainstream advanced means to solve power quality problem.At the same time, with the rapid development of power switching devices and the wide application of modern intelligent control theory, active power filter compensation technology is becoming more and more mature.In this paper, the three-phase four-wire shunt active power filter is studied and designed from three parts: the topology of the main circuit, the detection algorithm of compensation instruction current and the output current tracking control algorithm.Taking the topology structure of the three-phase four-leg main circuit as the research object, the mathematical models of the three-phase four-arm main circuit in the static abc coordinate system and the 偽 尾 0 three-dimensional coordinate system are established, and the coupling relations among the parameters affecting the system performance are analyzed.Based on the traditional instantaneous power theory, a compensation instruction current detection algorithm based on voltage rotation vector oriented synchronous coordinate axis position is presented, and the calculation formula of instruction current is determined.At the same time, based on the single-phase voltage-type half-bridge inverter circuit structure and the basic idea of instantaneous current direct control, a fast tracking control method for output current of four-leg shunt active power filter is presented.A theoretical formula for calculating the pulse width of 8 channels PWM is derived.The control algorithm can reduce the complexity of the control algorithm and save the CPU resource space.In order to verify the correctness of the proposed detection algorithm and control strategy, this paper simulates and implements the four-arm shunt active power filter based on MATLAB/Simulink simulation experiment platform, and gives the corresponding software and hardware design.Finally, a modular test prototype with TMS320F28335 DSP as the main control unit and capacity of 20KVA is designed and built, and related experiments are carried out.The simulation, experimental waveform and related data analysis show that the proposed control algorithm is effective and has the advantages of simple control, good real-time performance, and so on.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN713

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本文編號(hào)：1699090