1) improved d-q transform method
改进d-q变换法
1.
An improved d-q transform method is presented to further improve its compensation performance according to different compensation strategies of DVR by introducing the object voltage function.
为了进一步提高DVR的补偿性能,针对用户对补偿策略选取的不同,通过引入目标电压函数,提出改进d-q变换法对电压补偿量进行检测。
2) the improved d-q transform without delay
无时延改进d-q变换
1.
Dummy three-phase voltages are gained by the derivative of any phase voltage, which is the improved d-q transform without delay.
在对前人已经取得的电能质量扰动识别的研究成果概括总结的基础上，提出一种无时延改进d-q变换法。
3) d-q transformation
d-q变换
1.
The inductive parameters and models in the d-q circuit are derived firstly in the paper by a unified expression for calculating inductances of AC machines and double d-q transformations respectively.
本文首先借助电感参数统一计算公式和双d-q变换,求得了双绕组同步电机众多电感参数的表达式和d-q轴等效模型,取得与文献相同的结论。
2.
By use of d-q transformation, in this control method a three phase AC system is transformed into rotating orthogonal coordinate system and under the transformed coordinate system the compensating current of active power filter is controlled by PI controller to make it trace the reference current.
该控制方法利用d-q变换将三相交流系统变换到旋转的正交坐标系,采用比例积分调节器控制有源电力滤波器的补偿电流,使其跟踪参考电流。
3.
A method of harmonic and reactive currents detection based on d-q coordinates transformation for three-phase voltage and current is proposed, which separates the responding components after d-q transformation to realize the current detection.
该方法通过对三相电压与电流进行d-q变换后对相应的分量进行分离的方法实现对谐波与无功电流的检测。
4) d-q transform
d-q变换
1.
APF parallel operation based on d-q transform;
基于d-q变换的有源滤波器并联运行分析
2.
Recognition of transient voltage disturbances based on integrated mathematics morphology filters and non-delay d-q transform;
基于数学形态学复合滤波和无时延d-q变换的电压暂态扰动识别
3.
An improved d-q transform method without time delay is proposed.
提出了一种无时延的改进d-q变换法,该方法所用数据具有同时性,克服了常规在d-q变换只适用于识别三相对称电压扰动及延迟60°构造三相电压的镜像扰动等缺点,能够对三相或单相电力系统的电压扰动进行识别,还具有所提取的特征量物理意义明确、实时性好、容易检测突变和对某些扰动进行放大等特点,并在动态电压扰动仿真识别中取得了较好效果。
5) dual d-q coordinate transformation
双d-q变换
1.
Based on dual d-q coordinate transformation and trigonometric transform, an improved real-time detection method of random integer-order harmonic voltage is proposed.
基于双d-q变换和三角变换,提出了一种改进的任意整数次谐波电压实时检测方法。
6) d/q transformation
d/q坐标变换
补充资料：Radon变换和逆Radon变换
Radon变换和逆Radon变换
X线物理学术语。CT重建图像成像的主要理论依据之一。1917年澳大利亚数学家Radon首先论证了通过物体某一平面的投影重建物体该平面两维空间分布的公式。他的公式要求获得沿该平面所有可能的直线的全部投影(无限集合)。所获得的投影集称为Radon变换。由Radon变换进行重建图像的操作则称为逆Radon变换。Radon变换和逆Radon变换对CT成像的意义在于，它从数学原理上证实了通过物体某一断层层面“沿直线衰减分布的投影”重建该层面单位体积，即体素的线性衰减系数两维空间分布的可能性。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条