本文關(guān)鍵詞：SAPF檢測與控制算法的優(yōu)化和實(shí)現(xiàn)研究　出處：《遼寧工程技術(shù)大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 諧波抑制 SAPF 鎖相環(huán) 優(yōu)化SVPWM 無源阻尼LCL

【摘要】：并聯(lián)有源電力濾波器SAPF是諧波治理的主趨勢。本文主要針對DQ檢測的鎖相問題、SVPWM控制的實(shí)時性問題、LCL并網(wǎng)濾波器的諧振峰問題這三部分關(guān)鍵技術(shù)進(jìn)行優(yōu)化和實(shí)現(xiàn)研究,以滿足SAPF對電網(wǎng)諧波補(bǔ)償?shù)膶?shí)時性、準(zhǔn)確性本文重點(diǎn)對SAPF的檢測技術(shù)、控制技術(shù)、并網(wǎng)技術(shù)進(jìn)行分析、改進(jìn)以及實(shí)現(xiàn)。針對DQ檢測的鎖相問題,提出具有魯棒性的單相數(shù)字軟件鎖相環(huán)PLL,該軟件鎖相環(huán)對電網(wǎng)的相位跟蹤結(jié)果不受電壓畸變的影響,對電網(wǎng)具有良好的適應(yīng)性；針對傳統(tǒng)SVPWM控制的實(shí)時性問題,提出優(yōu)化電壓空間矢量SVPWM算法,在繼承傳統(tǒng)SVPWM算法高效率、低損耗、動態(tài)性能好等特點(diǎn)的基礎(chǔ)上,提出改進(jìn)運(yùn)算方式,能夠有效地降低算法在CPU中的運(yùn)行速度,以提高對諧波補(bǔ)償?shù)膶?shí)時性；針對LCL并網(wǎng)濾波器存在的諧振峰問題,提出RC并聯(lián)LCL系統(tǒng)增阻尼法,具有高阻尼、低損耗、低成本、濾波特性好等特點(diǎn),以改善SAPF并網(wǎng)波形質(zhì)量、提高系統(tǒng)運(yùn)行效率。本文在對關(guān)鍵技術(shù)提出優(yōu)化改進(jìn)的同時,進(jìn)行MATLAB仿真、DSP編程、樣機(jī)試驗(yàn),以確保每一項(xiàng)改進(jìn)方案應(yīng)用到SAPF中的可行性,以及最終SAPF對諧波動態(tài)抑制的實(shí)際效果。本文的研究成果,為有效實(shí)現(xiàn)煤礦諧波與無功動態(tài)補(bǔ)償提供理論基礎(chǔ),對凈化畸變電網(wǎng)、改善系統(tǒng)品質(zhì)具有一定的實(shí)用價值與重要的研究意義。
[Abstract]:Parallel active power filter (SAPF) is the main trend of harmonic control. This paper focuses on the detection of DQ and SVPWM phase locking of the real time control of the problem, LCL grid filter Xie Zhenfeng in the three part of the key technologies to optimize the research and implementation of SAPF, to meet the harmonic compensation accuracy of real-time, this paper focuses on the SAPF detection technology, control technology, network technology, improvement and analysis to achieve. Aiming at the problem of DQ phase-locked detection, proposed single-phase digital robust software phase-locked loop PLL, the software phase locked loop tracking results for the grid is not affected by voltage distortion, has a good adaptability to the network; to solve the real-time problem of traditional SVPWM control, puts forward the optimization of voltage space vector SVPWM algorithm, based on the characteristics of inheritance the traditional SVPWM algorithm with high efficiency, low loss, good dynamic performance and so on, put forward the operation mode, can effectively reduce the algorithm in the CPU speed, in order to improve the real-time performance of harmonic compensation; the resonant peak problem of LCL grid filter, proposes the damping method of RC parallel LCL system, has the characteristics of high damping low loss, low cost, good filtering characteristics, to improve the SAPF grid waveform quality, and improve the system efficiency. Based on the optimization and improvement of key technologies, MATLAB simulation, DSP programming and prototype test are carried out to ensure the feasibility of each improvement plan applied to SAPF and the practical effect of SAPF on harmonic suppression. The research results in this paper provide a theoretical basis for effective realization of dynamic harmonic compensation and reactive power compensation in coal mines, which is of practical value and important research significance for decontamination of distorted power grids and improvement of system quality.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TM761

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本文編號：1342189