Results 241 to 250 of about 11,946,791 (292)

Series-Parallel Active Filter/Uninterruptible Power Supply System

Electric Power Components and Systems, 2004
In this article, a novel series-parallel active filter/uninterruptible power supply (UPS) system is presented. Modeling and analysis of the newly introduced series-parallel UPS topology, along with the three-phase unified power quality conditioner (UPQC), are presented.
Ali Emadi
exaly   +2 more sources

A grid-voltage-sensorless resistive active power filter with series LC-filter

2017 IEEE Energy Conversion Congress and Exposition (ECCE), 2017
Voltage-sensorless control has been investigated for Voltage Source Inverters (VSIs) for many years due to the reduced system cost and potentially improved system reliability. The VSI based Resistive Active Power Filters (R-APFs) are now widely used to prevent the harmonic resonance in power distribution network, for which the voltage sensors are ...
Haofeng Bai, Xiongfei Wang, Frede Blaabjerg   +2 more
openaire   +4 more sources

A novel series-in series hybrid active power filter

2008 Twenty-Third Annual IEEE Applied Power Electronics Conference and Exposition, 2008
In order to decrease the passive filter rating, suppress the large resonant peak when the passive part is used alone for the series-in series hybrid active power filter (SHAPF), a novel series-in SHAPF topology is proposed in this paper. It is a combined system of a traditional SHAPF and a capacitor which is connected in series with inverter and ...
null Liqing Tong, null Zhaoming Qian, null Lingxiao Xue, Fang Z. Peng   +3 more
openaire   +1 more source

Study of a New Series Hybrid Active Power Filter

2009 Pacific-Asia Conference on Circuits, Communications and Systems, 2009
This paper investigates the configuration of a new series hybrid active power filter consisting of a single tuned resonant branch between voltage source inverter and coupling transformer. The configuration is characterized by well filtering performance and reduces the capacity of active power filter.
Cunlu Dang, Defu Wang, Xiaoying Zhang, Lingli Gan   +3 more
openaire   +2 more sources

Simulation of Aviation Series Active Power Filter

Advanced Materials Research, 2012
Active power filters have properties in rapid reflection, better compensation and the ability in dynamic suppression. An aviation series active power filter based on ip，iq method according to the theory of instantaneous reactive power was designed and simulated with PSIM in this paper.
Xue Jun Su, Ren Xi, Cheng Gang Wang
openaire   +1 more source

A novel series hybrid active power filter

2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551), 2004
A novel series hybrid active power filter is proposed. Compared with the conventional series active power filter (SAPF) or the series hybrid active power filter, its active part only needs to suppress some low order harmonics. So the capacity factor of the inverter's DC voltage is improved a lot and the power rating of the active part decreases ...
null Weimin Wu, null Liqing Tong, null MingYue Li, Z.M. Qian, null ZhengYu Lu, F.Z. Peng   +5 more
openaire   +1 more source

Stability Analysis of the Series-In Series Hybrid Active Power Filter

Applied Mechanics and Materials, 2011
For the important characteristic of the system stability, a state-space averaging model of the series-in series hybrid active power filter (SHAPF) is constructed to analyze its system stability by traditional control strategy taking into account the effect of the time delay in the digital control system, inverter, low pass filter and second-order ...
Yao Jie Sun, Li Qing Tong, Yan Dan Lin
openaire   +1 more source

Simplified series active power filters

2010 IEEE Electrical Power & Energy Conference, 2010
Power harmonic is the important factors affect the safety of transmitting and transforming power. This paper presents a news simplified series single-phase active power filter based on controlling harmonic levels in residential and commercial areas.
openaire   +1 more source

The unified power quality conditioner: The integration of series active filters and shunt active filters

PESC Record. 27th Annual IEEE Power Electronics Specialists Conference, 2002
This paper deals with "unified power quality conditioners" (UPQCs) which aim to integrate series active and shunt active filters. The main purpose of a UPQC is to compensate for voltage flicker/imbalance, reactive power, negative sequence current and harmonics.
H. Fujita, H. Akagi
openaire   +1 more source

Series Active Power Filter for Power Quality Improvement

Engineering World
The paper discusses the theoretical framework and operating principles of the SAPF, including its control strategies based on instantaneous reactive power theory and synchronous reference frame theory. The design criteria for the SAPF components, such as the voltage source inverter, DC link capacitor, and coupling transformer, are also elaborated to ...
Vikramsingh R. Parihar, Aaditya P. Agarkar, Kaustubh S. Kalkonde, Harshada M. Raghuwanshi, Mohini G. Fuse, Dr. Soni A. Chaturvedi   +5 more
openaire   +1 more source