本文選題：有源電力濾波器　切入點(diǎn)：無諧波檢測技術(shù)　出處：《湖北工業(yè)大學(xué)》2017年碩士論文

【摘要】：隨著電力電子技術(shù)的發(fā)展,越來越多的電力電子裝置投入到生產(chǎn)、生活的方方面面,給社會創(chuàng)造了巨大效益,給人們的生活帶來了巨大改善,但也給電網(wǎng)帶來了嚴(yán)重的諧波污染。而有源電力濾波器能夠有效治理電網(wǎng)諧波,改善電網(wǎng)的供電質(zhì)量,正得到廣泛關(guān)注和研究。針對三相三線制并聯(lián)有源電力濾波器,為充分利用其特點(diǎn)和優(yōu)勢,并擴(kuò)展其應(yīng)用領(lǐng)域,本文對其補(bǔ)償性能展開了研究。文中采用了一種無諧波檢測的新型控制策略,這種控制策略省去了常規(guī)控制策略中諧波及無功分量的檢測環(huán)節(jié),直接控制電網(wǎng)電流,減少了所需電流互感器的數(shù)量,又避免了諧波及無功檢測環(huán)節(jié)本身誤差和延時(shí)的影響。這種新型控制策略包含兩個控制環(huán):電流控制內(nèi)環(huán)和電壓控制外環(huán),電流控制環(huán)用來調(diào)節(jié)電網(wǎng)電流,電壓控制環(huán)用來調(diào)節(jié)直流側(cè)電壓。由仿真結(jié)果驗(yàn)證了本文所采用控制策略的有效性。然后,分析了并聯(lián)型有源電力濾波器對在公用電網(wǎng)中應(yīng)用普遍的電壓源型與電流源型非線性負(fù)載的諧波補(bǔ)償特性。通過理論分析推導(dǎo)出描述負(fù)載諧波電流放大效應(yīng)的統(tǒng)一表達(dá)式,得出并聯(lián)型有源電力濾波器不適合補(bǔ)償電壓源型非線性負(fù)載的原因。由此,提出了從控制策略和系統(tǒng)結(jié)構(gòu)上抑制負(fù)載諧波電流放大效應(yīng)的解決方法,改善并聯(lián)型有源電力濾波器的諧波補(bǔ)償性能。由仿真結(jié)果驗(yàn)證了理論分析和解決方法的正確性。最后,搭建了有源電力濾波器實(shí)驗(yàn)樣機(jī),對樣機(jī)的主電路硬件選型和控制系統(tǒng)硬件、軟件等方面分別進(jìn)行了介紹和設(shè)計(jì),并給出了樣機(jī)運(yùn)行的實(shí)驗(yàn)波形,通過實(shí)驗(yàn)結(jié)果表明了本文設(shè)計(jì)的有源電力濾波器樣機(jī)補(bǔ)償效果良好,能夠改善電網(wǎng)電流質(zhì)量。希望本文所做的研究工作,可以幫助到并聯(lián)型有源電力濾波器的實(shí)用化推廣。
[Abstract]:With the development of power electronic technology, power electronic devices increasingly put into production, all aspects of life, to create a huge benefit to society, bring great improvement to people's life, but also brings serious harmonic pollution to the power grid. And the active power filter can effectively suppress harmonics and improve power quality the power grid, is widely concerned and studied. For the three-phase three wire shunt active power filter, in order to make full use of its characteristics and advantages, and expand its application fields, this paper researches on the compensation performance. In this paper a novel control strategy for harmonic detection, this control strategy eliminates the need for conventional control the strategy in the harmonic and reactive component detection, direct control of grid current, reduce the number of current transformer, but also avoid the harmonic and reactive power detection of the error and delay When the impact. This new control strategy consists of two control loops: the inner current control loop and voltage control loop, current loop control is used to adjust the grid current, voltage control loop is used to adjust the DC voltage. The simulation results verify the validity of the control strategy used in this paper. Then, analysis of the shunt active power filter the harmonic compensation characteristics using the voltage source and current source type nonlinear universal load in public power system. The unified formula derived through theoretical analysis to describe the load harmonic current amplification effect, the shunt active power filter for compensating voltage source type nonlinear loads. Thus, puts forward the solving method of load harmonic current the amplification effect of inhibition from the control strategy and system structure, improve the harmonic compensation performance of the shunt active power filter. The simulation results show that the physical The correctness of the theory analysis and solving method. Finally, an experimental prototype of APF main circuit hardware, hardware selection and control system of the prototype, software and other aspects are introduced and designed, and the experimental waveforms are given by the operation of a prototype, the experimental results show that the compensation effect of active power filter prototype is designed in this paper good, can improve the quality of the grid current. I hope this study can help to the practical application, the shunt active power filter.

【學(xué)位授予單位】：湖北工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM761

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