【摘要】：以單相兩電平脈沖整流器為研究對象,以提高其dq電流解耦控制的動態(tài)性能為目的,針對傳統(tǒng)dq軸電流計算速度緩慢的問題,提出一種新的dq軸電流計算方法。首先,引入兩相坐標(biāo)系下空間復(fù)矢量的概念,建立整流器在dq坐標(biāo)系下的數(shù)學(xué)模型,分析dq電流解耦控制的基本原理;然后,針對單相系統(tǒng)αβ-dq坐標(biāo)轉(zhuǎn)換需要引入虛擬正交分量問題,提出一種任意相位延時算法,并分析該算法的響應(yīng)速度與抗噪聲干擾能力,該算法與目前幾種常用的正交信號產(chǎn)生(orthogonal signal generators,OSG)算法相比具有更快的響應(yīng)速度,且無需復(fù)雜計算、實現(xiàn)簡單容易;最后對所提出的算法結(jié)合單相整流器dq電流解耦控制進(jìn)行計算機(jī)仿真與半實物實驗驗證,同時與幾種常見OSG算法做對比實驗,結(jié)果證明了所提算法的正確性與有效性。
[Abstract]:In order to improve the dynamic performance of DQ current decoupling control in single-phase two-level pulse rectifier, a new method of dq-axis current calculation is proposed to solve the problem of slow calculation speed of traditional dq-axis current. Firstly, the concept of space complex vector in two-phase coordinate system is introduced, the mathematical model of rectifier in dq coordinate system is established, and the basic principle of dq current decoupling control is analyzed. In view of the need to introduce the virtual orthogonal component problem into the 偽 尾 -dq coordinate transformation of single-phase systems, an arbitrary phase delay algorithm is proposed, and its response speed and anti-noise interference ability are analyzed. Compared with several orthogonal signal generation (orthogonal signal generators OSG (orthogonal signal Generation) algorithms, this algorithm has faster response speed and less complicated calculation, so it is simple and easy to implement. Finally, computer simulation and hardware-in-the-loop experiments are carried out to verify the proposed algorithm combined with dq current decoupling control of single-phase rectifier. At the same time, the proposed algorithm is compared with several common OSG algorithms. The results show that the proposed algorithm is correct and effective.
【作者單位】： 磁浮技術(shù)與磁浮列車教育部重點實驗室(西南交通大學(xué)電氣工程學(xué)院);
【基金】：國家自然科學(xué)基金資助項目(51677156)~~
【分類號】：TM461

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