An improved harmonic and reactive current detecting method 一種改進型諧波和無功電流檢測方法
Unified model based harmonics and reactive current detection 基于統一模型的諧波及無功電流檢測
Intelligent power transformers for the reactive currents automatic compensation 智能型無功自動補償式電力變壓器
Among them , the action of the reactive current testing circuit is testing the reactive current component in the compensated object current 其中,無功電流檢測電路的作用是檢測出補償對象電流中的無功電流分量。
For this reason , we redefined the instantaneous reactive power so as to make it easier for detecting harmonic current and fundamental reactive current 為此,重新定義了系統瞬時無功功率,使其更易于諧波和無功電流的實時檢測。
A closed - loop detecting approach of harmonic and reactive current based on instantaneous reactive power theory is proposed , its base design rules are given 摘要分析了基于瞬時無功功率理論的諧波及無功電流檢測原理,在此基礎上提出一種自適應閉環控制的檢測系統,給出優化設計的基本原則。
The results indicate that asvg not only can compensate reactive currents , but also can effectively filter the harmonic currents , negative sequence currents and zero sequence currents 仿真結果證明基于空間矢量調制的asvg既能夠補償不平衡系統的無功功率,同時又能夠有效地濾除系統中的諧波、負序和零序等有害電流。
By realtime detecting harmonics and reactive current in the power line , then generate the compensate current which is equal to the harmful current in amplitude and opposite in direction , realtime compensation is achieved 它通過實時檢測電網諧波和無功電流,然后產生與之大小相等、相位相反的補償電流,進行實時補償。
The detecting method of dvr is different from harmonic and reactive current detecting methods . it need detect not only total harmonic distortion but also the difference between fundamental wave component and reference value Dvr的檢測方法與諧波、無功電流的檢測不同,不但需要檢測出除基波分量之外的總畸變分量,還要檢測出基波分量與基波基準值之差。
Three - phase four - wire apf with one - cycle control need not sense the three phase load currents or the three phase voltages , need not calculate the harmonics and reactive current components , as well as the use of any multipliers 單周控制三相四線制有源電力濾波器不需要檢測三相負載電流和三相電源電壓,不需要檢測諧波和無功電流,也不需要使用任何乘法器。