Research of Harmonic Detection Methods in APF

Power Quality Compensation System with DSP Controlled APF

基于DSP控制有源滤波器的电能质量补偿系统

DC link voltage control is a key technology of shunt APF.

直流侧电压控制是并联型有源电力滤波器的关键技术之一。

The Comparing and Analyzing of the Compensation Method for APF

有源滤波器补偿方式的比较与分析

Several method of detecting harmonic current in the APF based harmonic compensation

基于APF的谐波补偿中的几种谐波电流检测方法

This paper chooses three phase shunt APF to study.

本文选择三相并联型有源电力滤波器作为研究对象。

Method of designing APF based on compensating reference current for control loop

基于控制回路补偿参考电流的APF设计方法

The hysteresis current control method for APF based on voltage space vector.

基于电压空间矢量的APF滞环电流控制方法。

The key to APF is an accurate and real-time detecting method.

使用有源滤波器进行精确补偿的关键在于，实时、准确地检测出电网中瞬时变化的畸变电流。

To improve the transient characteristics of APF system, the power balance principle is applied to harmonic and reactive power detection.

为了更好地提高有源滤波系统的瞬时特性，将有功功率平衡原理应用于并联型有源滤波器的谐波和无功检测。

However, the research of control method and control technique of APF is the core problem.

而有源滤波器的控制技术又是其研究中的核心问题。

So, as I said to you, natural medicine is also known as holistic medicine

那么，正如我对你说过的那样，自然医学也被称为整体医学。

Peter Wilson, also known as 'the Tiger'.

彼得∙威尔逊，也称“老虎”。

The Universal Product Code symbol, also known as the ‘ bar code ’, is printed on products for sale and contains information that a computer can read.

通用产品代码符号，亦称“条形码”，印在出售的商品上，其中含有计算机能识别的信息。

Using foreign yellow earth and deeply planting, forestation experiment was conducted.

采用黄泥客土和深埋2种方式进行造林试验。

Characteristics of phosphorus and correlation study on phosphorus supplying capacity in paddy soil from yellow earth

黄壤性水稻土的磷素特征及供磷能力的相关研究

The so called Yellow-Red Earth, a subgroup of Red Earth, has been proved to be an intergrade soil between Red Earth and Yellow Earth by the silica-alumina ratio of clay and silt-clay ratio of the soil.

而黄红壤亚类的粉砂/粘粒比及硅铝率，均偏离典型红壤或黄壤，从而反映了黄红壤是一种过渡性土壤。

Among them, The Yellow Earth won the 1985 British Movie Institute ( BFI) award for the most original and imaginative movie;

其中1985年的《黄土地》被英国电影协会誉为最佳原创和想象电影；

The parent-soil types of tea field soil are mainly yellowish-red earth, yellow earth, brownish-red earth and yellowish-brown earth in Anhui Province.

安徽茶园土壤的母土类型主要有黄红壤、黄壤、棕红壤和黄棕壤。

Colder days, and on the ground that are not green, and left large tracts of Yellow Earth.

天更冷了，地上一点绿色都没有了，只剩下大片大片的黄土地。

Just move a little room for weeds to survive, she would decorate the yellow earth, hold up a green.

只要挪动一点杂草生存的空间，他就会把黄土地装点，撑起一片绿色。