Author(s): Tanta, Mohamed ; Pinto, Gabriel ; Monteiro, Vítor Duarte Fernandes ; Martins, António Pina ; Carvalho, Adriano Silva ; Afonso, João L.
Date: 2019
Persistent ID: https://hdl.handle.net/1822/67454
Origin: RepositóriUM - Universidade do Minho
Subject(s): Rail Power Conditioner; Modular Multilevel Converter; V/V Transformer; Scott Transformer; Cost Estimation; Engenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática
This paper presents a cost estimation study for several rail power conditioner (RPC) topologies based on an indirect modular multilevel converter (MMC), in which these topologies are combined with V/V or Scott power transformers. The RPC topologies under interest in this paper are: the RPC based on a full-bridge MMC (RPC based on MMC4), the RPC based on two-phase three-wire MMC (RPC based on MMC3), and the RPC based on a half-bridge MMC (RPC based on MMC2). These RPC systems operate at medium voltage levels in the interconnection to 25 kV-50 Hz catenary sections to solve power quality problems, such as the current harmonics and the negative sequence components (NSCs) of currents. Along the paper are described the V/V and the Scott power transformers, the RPC main architectures, and the estimated cost of implementation for each RPC topology considering V/V or Scott implementations. As main contribution, the presented results could help in the selection procedure of the RPC topology, giving the best economical solution according to the used power transformer (V/V or Scott).
