A new modified PQ theory used for reactive power and current harmonic compensation

2006 ◽  
Author(s):  
M. Benghanem ◽  
E.A. Alradadi ◽  
A. Draou
Keyword(s):  
Reactive Power ◽  
Harmonic Compensation ◽  
Current Harmonic

scholarly journals Reactive Power and Current Harmonic Control Using a Dual Hybrid Power Filter for Unbalanced Non-Linear Loads

Energies ◽  
2018 ◽  
Vol 11 (6) ◽  
pp. 1392 ◽  
Author(s):  
Leonardo Rodrigues Limongi ◽  
Fabricio Bradaschia ◽  
Calebe Hermann de Oliveira Lima ◽  
Marcelo Cabral Cavalcanti
Keyword(s):  
Reactive Power ◽  
Active Filters ◽  
Nonlinear Loads ◽  
Harmonic Compensation ◽  
Current Harmonics ◽  
Current Harmonic ◽  
Electrical Grid ◽  
Hybrid Power ◽  
Quality Issue ◽  
Non Linear

An important power quality issue is related to current harmonic components demanded by non-linear loads. A solution to mitigate this issue is to use hybrid power filters (HPFs), that apply low power active filters with passive filters. Some dual-converter topologies have been shown to be attractive due to a better compensation performance compared with single filters, where the HPFs give a reactive power support (an extra feature) together with harmonic compensation. On the other hand, the drawback of dual converters is the high number of active switches. Besides that, due to the high number of unbalanced non-linear loads connected to the electrical grid, triplen harmonics can appear. However, traditional HPFs do not compensate triplen harmonics, which usually have considerable values. Therefore, in this paper, a dual HPF based on the nine-switch inverter (DHPF-NSI) is proposed to compensate current harmonics and to provide reactive power support. The NSI presents a reduced number of switches when compared with classical dual topologies. The compensation of the third harmonic caused by unbalanced nonlinear loads was also inserted in the control system. Experimental results are presented for the DHPF-NSI in order to demonstrate the reactive power and harmonic compensation performances.

Current harmonic Compensation using a Controlled Eight Switch Power Conditioner

2021 ◽  
Author(s):  
M.G. Unde ◽  
Minakshi L. Jadhav ◽  
Sampat P. Bansode ◽  
Rohini R.Dabhade
Keyword(s):  
Harmonic Compensation ◽  
Current Harmonic ◽  
Power Conditioner ◽  
Switch Power

Three-Phase Grid Connected Bi-Directional Charging System to Control Active and Reactive Power with Harmonic Compensation

2019 ◽  
Vol 20 (2) ◽  
Author(s):  
Maheswar Prasad Behera ◽  
Pravat Kumar Ray
Keyword(s):  
Energy Storage ◽  
Reactive Power ◽  
Storage System ◽  
Energy Storage System ◽  
Control Technique ◽  
Battery Energy Storage System ◽  
Harmonic Compensation ◽  
Battery Energy Storage ◽  
Three Phase ◽  
Battery Energy

Abstract The feasibility of integration of Battery Energy Storage System (BESS) with a three-phase AC grid is being investigated in this paper. A converter is an inevitable part of a modern DC generating system. The link between the grid and the BESS is established through a Voltage Source Converter (VSC). Therefore, the converter can be utilized to dispatch the DC generated power to the connected AC grid and at the same time provides reactive power compensation and load harmonic compensation throughout the day. The DC bus voltage control of the converter system is carried out to keep the power factor always at unity, irrespective of the charging state of the battery source. The charging and discharging of the connected battery energy storage system are carried out through a bidirectional DC-DC converter. Adaptive hysteresis band current control (AHCC) scheme is employed to produce the switching signals. Finally, its performance is compared with the traditional hysteresis band control technique.

Conventional DC Voltage Operating System for High Speeed Traction Power Supplies Using LLC-HPQC Control

2015 ◽  
Vol 4 (4) ◽  
pp. 118
Author(s):  
Ch. Lenin Babu ◽  
P. Harinath Reddy ◽  
T. Reddi Sekhar
Keyword(s):  
Power Supply ◽  
High Speed ◽  
Reactive Power ◽  
Design Procedure ◽  
Power Supplies ◽  
Parameter Design ◽  
Voltage Level ◽  
Harmonic Compensation ◽  
Traction Power Supply ◽  
Traction Power

<p>In this paper a hybrid power quality compensator (HPQC) is proposed for compensation in cophase traction power supply and minimum dc operation voltage is achievable for high-speed traction power supply. The parameter design procedure for minimum dc operation voltage in HPQC as well as minimum voltage rating with load PF is discussed. The detailed discussions of proposed circuit configurations of HPQC are provided in section II, together with comparison with conventional RPC. In comparison with conventional railway power compensator proposed HPQC can achieve reduced dc link voltage level. It is also verified through simulations results that the LLC-HPQC would operate at the minimum voltage with the proposed parameter design. HPQC is able to provide system unbalances, reactive power, and harmonic compensation in cophase traction power with reduced operation voltage. The cophase traction power supply with proposed HPQC is suitable for high-speed traction applications.</p>

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