本文關(guān)鍵詞：混合有源電力濾波器廣義諧波檢測方法研究　出處：《湖南工業(yè)大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 混合有源電力濾波器 廣義諧波 檢測 廣義鎖相環(huán) 數(shù)學(xué)形態(tài)學(xué)

【摘要】：隨著電網(wǎng)諧波、無功以及零負序等電能質(zhì)量污染問題的日益嚴(yán)重，，將它們整合為廣義諧波進行綜合治理具有重要的研究價值。在治理電能質(zhì)量的電力電子裝置中，混合有源電力濾波器具有頗高的性價比。而廣義諧波檢測效果是混合有源電力濾波器進行治理的主要依據(jù)，因此本文旨在研究廣義諧波的優(yōu)化檢測方法，以提高檢測的準(zhǔn)確性和實時性。 首先，對混合有源電力濾波器的拓撲結(jié)構(gòu)和分類進行了深入的研究，闡述了其四個主要功能模塊的工作原理，為研究廣義諧波檢測方法奠定理論基礎(chǔ)。 其次，根據(jù)混合有源電力濾波器對檢測效果的要求，分析了基于傳統(tǒng)瞬時無功功率理論檢測方法中的變換矩陣、鎖相環(huán)及低通濾波器三個環(huán)節(jié)的工作局限性，為廣義諧波優(yōu)化檢測方法的提出提供前提。 再次，提出一種基于廣義瞬時無功功率理論的廣義諧波優(yōu)化檢測方法，其針對傳統(tǒng)檢測方法的工作局限性，做了三個方面的優(yōu)化工作：一是將檢測方法中的平面變換矩陣擴展至空間變換矩陣，提高矩陣變換的可靠性；二是在檢測方法的鎖相環(huán)節(jié)，提出了單相廣義鎖相環(huán)和三相廣義鎖相環(huán)的鎖相方法，通過簡單的邏輯運算和矩陣變換實現(xiàn)對電網(wǎng)電壓的基波正序分量正余弦信號的同步提取，能提高相位鎖定的成功率，改善檢測方法的準(zhǔn)確性；三是在檢測方法的低通濾波環(huán)節(jié)，提出一種廣義加權(quán)形態(tài)濾波器取代傳統(tǒng)的低通濾波器，以數(shù)學(xué)形態(tài)學(xué)理論為基礎(chǔ)，采用其四種最基本的運算法則，通過合理選擇結(jié)構(gòu)元素，構(gòu)成主從開-閉、閉-開兩種迭代濾波器，并結(jié)合自適應(yīng)對消技術(shù)，將兩種迭代濾波器的輸出信號分別與廣義鎖相環(huán)鎖定的基波正序電壓正余弦信號進行加權(quán)組合，輸出直流信號，以提高檢測方法的實時性。 最后，對傳統(tǒng)檢測方法和本文所提的優(yōu)化檢測進行仿真對比和實驗研究，結(jié)果表明，在各種工況下的單相、三相系統(tǒng)中，本文所提出的廣義諧波優(yōu)化檢測方法在響應(yīng)速度和檢測精度上都優(yōu)于傳統(tǒng)檢測方法，驗證了其有效性和可行性。
[Abstract]:With the harmonic, reactive and negative sequence and zero power quality pollution is becoming increasingly serious, they will integrate the comprehensive management for the generalized harmonic has important research value. In the power electronic devices in power quality control of hybrid active power filter with high cost. And the detection effect is mainly based on generalized harmonic mixing active power filter control, optimization of detection method therefore this paper aims to study the generalized harmonic, in order to improve the detection accuracy and real-time.
Firstly, the topology and classification of hybrid active power filter are deeply studied, and the working principles of four main functional modules are expounded, which lays a theoretical foundation for studying generalized harmonic detection method.
Secondly, according to the requirements of hybrid active power filter for detection performance, analyzes the transformation matrix of the traditional detection method of instantaneous reactive power theory based on the work limitations of PLL and low pass filter three links, providing the prerequisite for the optimization of the generalized harmonic detection method is proposed.
Again, put forward a generalized optimal harmonic detection method based on generalized instantaneous reactive power theory, the traditional detection methods of work limitations, do the optimization work in three aspects: one is to be extended to the space plane transformation matrix transformation matrix in the detection method, the invention has high reliability matrix transformation; two is locked link detection method, proposed method of single phase locked loop and phase-locked generalized generalized three-phase PLL, realize the synchronous extraction of fundamental positive sequence voltage of the cosine signals through simple logic operations and matrix transform, phase locking can improve the success rate, improve the accuracy of the detection method; three is a low pass filter in the detection method, proposed a generalized weighted morphological filter to replace the traditional low pass filter, mathematical morphology theory, using the basic algorithm Then, through reasonable selection of structure elements, a master-slave open close and close open two iterative filter, and adaptive cancellation technology, fundamental positive voltage output signal of the two kinds of iterative filter with generalized cosine signal of the PLL is locked by the weighted combination of the output DC signal, in order to improve the real-time detection. Methods.
Finally, simulation and experimental research, the optimization of the detection of traditional detection methods and the results show that the single phase under various working conditions, in a three-phase system, the generalized harmonic detection optimization method proposed in this paper in response to the traditional detection speed and detection accuracy is superior, verify its validity and feasibility.

【學(xué)位授予單位】：湖南工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN713.8;TM935

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