retrogressive accumulation

Active power filter with a proportional recursive integral controller;

有源电力滤波器的比例递推积分控制

An improved PI controller adopting on-line self-adjustment technique of proportional control and recursive integral control is proposed to regulate the active part absorbing or releasing active power.

针对注入式混合有源电力滤波器(HAPF)实际应用过程中出现的电网基波和谐波电压致使有源部分分压过高并向其传送能量,从而与逆变器产生的电网谐波补偿能量相抑制形成能量脉动,并导致直流侧电压的波动乃至抬升的现象,建立了有源部分逆变器两侧的能量平衡数学模型,在此基础上提出了基于比例增益在线自调整结合递推积分的改进型PI控制器,控制有源部分吸收或释放一定的有功功率,结合检测注入支路回灌谐波电流控制逆变器产生与之相反的抑制电流来抑制能量脉动,然后联合电网谐波电流跟踪控制以获得系统参考信号。

By modeling a new injection type hybrid APF,a new ternary sliding mode variable structure control method is proposed,which integrates the merits of traditional sliding mode variable structure control and recursive integral PI control.

首先建立了一种新型注入式混合有源滤波器(Hybrid Active Power Filter,简称HAPF)的数学模型,同时针对控制参考信号为周期量这一特征,结合传统滑模变结构控制算法快速性好和递推积分PI控制算法无稳态误差的优点,引入递推积分PI控制算法的控制量作为离散滑模变结构控制器的等效控制,提出了一种三重滑模变结构控制算法。

A recursive convolution-finite-difference time-domain implementation of electromagnetic scattering by magnetized ferrite medium;

磁化铁氧体材料电磁散射递推卷积-时域有限差分方法分析

Three-dimensional finite-difference time-domain implementation for anisotropic dispersive medium using recursive convolution method;

电各向异性色散介质电磁散射的三维递推卷积-时域有限差分方法分析

An Analysis on the Zhexi Ci Poems and the Changzhou Ci Poems;

推源析流话“浙”“常”——“浙西词派”与“常州词派”

"When the plug is out of the unit, the switch cannot be turned on."

当电源插头已被推出时,电源开关不能置于ON位置。

The Electrical and echanical Services Department promotes energy efficiency and conservation.

机电工程署负责促进能源效率和推动节约能源。

China Renewable Energy Law promoting the development of renewable energy power generation;

《可再生能源法》推动可再生能源电力发展

Marketing and Resources Unit [sheltered workshop]

市场推广及资源支持组〔庇护工场〕

"With switch "ON", push the hair trimmer knob up."

接通电源并将侧轧剪开关推上。

Promote the Utilization of Detritus Resources to Develop the Cycle Economy

推动腐屑资源利用促进循环经济发展

Implement Endogenous Development Strategy,Activate Endogenous Growth Power

推行内源发展战略 激活内生增长动力

Probing the methods to chase and appraise sources of aerosols

大气气溶胶物质来源的推估方法探析

and the homology of predicted amino acids among them was 98.6% and 97.2%,respectiv ely.

推导氨基酸的同源性分别为 98.6 %、97.2 %。

The Study on Pushing Voluntarily Service for Chinese Agriculture and Forestry Information Resources;

中文农林信息资源主动推送服务研究

Design of Power Converter in Vehicle Based on the Topology of Push Pull Forward;

基于推挽正激拓扑的车载电源转换器

Seize opportunities and persist in advancing SinoRussian energy cooperation;

抓住机遇 坚定推进中俄能源合作

Develop Rural Human Resource,Advance Rural Economics;

开发农村人力资源,推进农村经济发展

Optimizing the Teaching Resources of Physics and Promoting the Teaching Reform of Physics;

优化物理教学资源 推进物理教学改革

Promotion of Agricultural Characteristic Resources Exploitation by Informatization;

以信息化推进西部农业特色资源开发

Pushing Scientific Innovation and Realizing Finely Mining and Recovering Coal Resource;

推进科技创新 实现精采细回煤炭资源

The legislation problems on sustainable energy development in China;

推进我国可持续能源发展的法律思考