發(fā)布時(shí)間：2018-01-04 21:43

  本文關(guān)鍵詞：采用CDSC濾波實(shí)現(xiàn)網(wǎng)側(cè)有功電流前饋的APF無諧波檢測(cè)控制　出處：《電網(wǎng)技術(shù)》2017年09期 　論文類型：期刊論文

  更多相關(guān)文章： 無諧波檢測(cè)控制 級(jí)聯(lián)延遲信號(hào)對(duì)消 有功電流前饋 直流電壓波動(dòng) 動(dòng)態(tài)特性

【摘要】：用無諧波檢測(cè)法控制有源電力濾波器(active power filter,APF)省去了諧波檢測(cè)環(huán)節(jié),減少了計(jì)算量,但傳統(tǒng)的無諧波檢測(cè)法存在APF直流電壓隨負(fù)荷變化而波動(dòng)嚴(yán)重的缺點(diǎn)。為此,該文基于對(duì)傳統(tǒng)無諧波檢測(cè)法直流電壓波動(dòng)機(jī)理的分析,提出利用網(wǎng)側(cè)正序有功電流前饋來提高無諧波檢測(cè)法下APF直流電壓的動(dòng)態(tài)響應(yīng)特性,從而抑制直流電壓波動(dòng)的改進(jìn)方案。為簡(jiǎn)化該方案在靜止坐標(biāo)系下的實(shí)現(xiàn),選用并設(shè)計(jì)了級(jí)聯(lián)延遲信號(hào)對(duì)消(cascaded delayed signal cancellation,CDSC)濾波器來獲取基波正序電流信號(hào)。由于穩(wěn)態(tài)的網(wǎng)側(cè)電流與電壓相位相同,據(jù)此設(shè)計(jì)了有功逼近算法代替?zhèn)鹘y(tǒng)有功電流計(jì)算方法。仿真和實(shí)驗(yàn)驗(yàn)證了改進(jìn)方案的有效性。與傳統(tǒng)無諧波檢測(cè)法相比,改進(jìn)方案加快了直流電壓恢復(fù)速度,提高了負(fù)荷電流波動(dòng)時(shí)直流電壓穩(wěn)定性,降低了APF損耗和網(wǎng)側(cè)電流不平衡度。
[Abstract]:With no harmonic detection of active power filter control method (active power filter, APF) eliminates the harmonic detection, reduce the amount of computation, but the traditional non harmonic detection method of APF DC voltage with load changes serious shortcoming. Therefore, the analysis of the traditional harmonic detection method based on the mechanism of DC voltage fluctuation the network side, to improve the positive sequence active current feedforward harmonic detection under DC voltage APF dynamic response characteristics, improvement scheme to suppress DC voltage fluctuation. In order to simplify the program in static coordinates are selected, and the design of the cascaded delayed signal cancellation (cascaded delayed signal cancellation, CDSC) filter to obtain the fundamental positive sequence current signal. Because of the net side current and voltage phase steady same, according to the design of the active approximation calculation method instead of the traditional algorithm of active current simulation. The effectiveness of the improved scheme is verified by experiments. Compared with the traditional harmonic free detection method, the improved scheme speeds up the DC voltage recovery, improves the DC voltage stability when the load current fluctuates, and reduces the APF loss and the network side current imbalance.

【作者單位】： 電力系統(tǒng)運(yùn)行與控制山西省重點(diǎn)實(shí)驗(yàn)室(太原理工大學(xué));
【基金】：山西省煤基重點(diǎn)科技攻關(guān)項(xiàng)目(MD2014-06) 山西省回國(guó)留學(xué)人員科研資助項(xiàng)目(2015-重點(diǎn)1) 國(guó)家自然科學(xué)基金項(xiàng)目(U1610121)~~
【分類號(hào)】：TM761;TM935
【正文快照】： Natural Science Foundation of China(NSFC)(U1610121).filter,APF)省去了諧波檢測(cè)環(huán)節(jié),減少了計(jì)算量,但傳統(tǒng)的無諧波檢測(cè)法存在APF直流電壓隨負(fù)荷變化而波動(dòng)嚴(yán)重的缺點(diǎn)。為此,該文基于對(duì)傳統(tǒng)無諧波檢測(cè)法直流電壓波動(dòng)機(jī)理的分析,提出利用網(wǎng)側(cè)正序有功電流前饋來提高無諧波檢

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