Selective current compensators based on the conservative power theory
MetadataShow full item record
This paper presents possible selective current compensation strategies based on the Conservative Power Theory (CPT). This recently proposed theory, introduces the concept of complex power conservation under non-sinusoidal conditions. Moreover, the related current decompositions results in several current terms, which are associated with a specific physical phenomena (power absorption P, energy storage Q, voltage and current distortion D). Such current components are used in this work for the definition of different current compensators, which can be selective in terms of minimizing particular disturbing effects. The choice of one or other current component for compensation directly affects the sizing and cost of active and/or passive devices and it will be demonstrated that it can be done to attend predefined limits for harmonic distortion, unbalances and/or power factor. Single-phase compensation strategies will be discussed by means of the CPT and simulation results will demonstrate their performance. © 2009 IEEE.
How to cite this document
Showing items related by title, author, creator and subject.
Paredes, H. K M ; Brandão, D. I. ; Terrazas, T. M. ; Marafão, F. P. (COBEP 2011 - 11th Brazilian Power Electronics Conference, 2011) [Trabalho apresentado em evento]Considering the operation of shunt active compensators, such as active power filters, this paper proposes possible compensation strategies by means of the recent formulation of the Conservative Power Theory (CPT). The CPT ...
Hybrid three-phase HPF rectifier with programmable input current THD, using FPGA device and VHDL language Soares, Jurandir O. ; Canesin, Carlos A. ; De Freitas, Luiz C. (7th Internatonal Conference on Power Electronics, ICPE'07, 2008) [Trabalho apresentado em evento]In this paper is proposed and analyzed a digital hysteresis modulation using a FPGA (Field Programmable Gate Array) device and VHDL (Hardware Description Language), applied at a hybrid three-phase rectifier with almost ...
A comparative analysis of FBD, PQ and CPT current decompositions - Part II: Three-phase four-wire systems Paredes, Helmo K. M.; Marafão, Fernando P. ; Da Silva, Luiz C.P. (2009 IEEE Bucharest PowerTech: Innovative Ideas Toward the Electrical Grid of the Future, 2009) [Trabalho apresentado em evento]This paper investigates the major similarities and discrepancies among three important current decompositions proposed for the interpretation of unbalanced and/or non linear three-phase four-wire power circuits. The ...