How to Design a Passive Damped LCL Coupling Filter for an Active DC-Traction Substation
Journal Title: ANALELE UNIVERSITATII DIN CRAIOVA - Seria Inginerie electrica - Year 2018, Vol 42, Issue 0
Abstract
The attention in this paper is directed to the design of a passive damped LCL filter intended to connect the voltage source inverter of an active DC-traction substation to the AC-power supply. Based on the tasks to be fulfilled by the passive connecting filter related to the current filtering and its dynamics, the mathematical foundation of the LCL filter design consists in taking into consideration the transfer function of the currents, the switching frequency, the resonance frequency and the compensated harmonics by active filtering. A design algorithms is formulated, by considering the imposition of the attenuation corresponding to the switching frequency. Besides this, the position of the resonance frequency relative to the frequency of the highest order harmonic to be compensated is imposed. The design algorithm is fully formulated, and specific indicators are defined and used to evaluate the performance of the whole active filtering system. The case study taken into consideration is of the active DC-traction substation, where the uncontrolled traction rectifier is of 12-pulse parallel type. Based on Matlab-Simulink modeling, the simulation of the whole active DC-traction substation operating in both active filtering and regeneration regimes illustrates the proper behavior of the system and the influence of the LCL filter parameters on the power quality performance.
Authors and Affiliations
Mihaela Popescu, Alexandru Bitoleanu, Mircea Dobriceanu, Florin Alexandru Teodorescu
Keywords
Related Articles
- EP ID EP432957
- DOI -
- Views 103
- Downloads 0
Neuro-fuzzy DTC for an Electrical Drive System with Induction Motor. A SISO controller for the velocity loop
The paper presents some design aspects concerning the implementation of a neuro-fuzzy controller for the velocity loop of an electrical drive system with induction motor and a Direct Torque Control strategy. The approach...
CONCERNING THE CONVERSION EFFICIENCY INCREASE OF THE AVAILABLE WIND POTENTIAL
There are some arguments in favor of the small systems for wind energy conversion directly in thermal energy by using the eddy current heater: the existing structure of power and thermal energy consumption is in favor o...
IMPLEMENTATION OF THE VECTOR CONTROL SYSTEM FOR TRACTION ASYNCHRONOUS MOTORS
The paper describes the InBus-103 electronic equipment for the trolleybus traction system with vector controlled asynchronous motor. Based on the experience acquired during more years and hundreds of equipment installed...
ELECTROMAGNETIC FIELD DISTRIBUTION IN VICINITY OF POWER LINES ABOVE REAL EARTH
A method for electromagnetic field components calculation in vicinity of power lines is presented. The electromagnetic field distribution of 2x110 kV power line, which is commonly used in Serbian electric power system, i...
Digital Control for the Air Pressure with Multi-Characteristics Selection
The paper deals with a preparatory research stage for controlling the air pressure inside a small tank by various characteristics and algorithms. Basic elements both for the hardware design and for the software support a...