Power and balancing control considerations on modular multilevel converters for battery electric vehicles

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Authors

Colleges, School and Institutes

External organisations

  • SINTEF Energy Research
  • Politecnico di Milano

Abstract

Modular multilevel converters with embedded battery cells are suitable candidates to improve the energy conversion efficiency of battery electric vehicles. In this new topology, the series connection of the battery cells is obtained by means of H-bridge modules, allowing the highest flexibility for the discharge and recharge of each individual battery cell. This objective can be achieved in practice only when a suitable control algorithm is designed to control at the same time the generation of the desired output voltages and the state of charge of cells. This paper discusses some aspects of the balancing algorithm of the battery cells including the cross-balancing between the converter's arms and the design of the control loop for symmetric three-phase output voltages. Simulations results applied to a city car confirm the theoretical considerations and illustrate the main features of the proposed control algorithm.

Details

Original languageEnglish
Title of host publication2013 15th European Conference on Power Electronics and Applications, EPE 2013
Publication statusPublished - 17 Dec 2013
Event2013 15th European Conference on Power Electronics and Applications, EPE 2013 - Lille, United Kingdom
Duration: 2 Sep 20136 Sep 2013

Conference

Conference2013 15th European Conference on Power Electronics and Applications, EPE 2013
CountryUnited Kingdom
CityLille
Period2/09/136/09/13

Keywords

  • Converter circuit, Converter control, Multilevel converters, Power converters for EV