Traditional Modular Multilevel Converters (MMCs) need a special care to be taken for starting and for operation at low motor speeds in traction drives. Indeed, the low-frequency current may cause a significant unbalance between the converter sub-module capacitor voltages and then disturb the output waveforms. MMCs with the battery cells integrated inside the sub-modules are an alternative configuration where the traditional battery management system of battery electric vehicles is replaced by the control of the converter, which individually balances all the cells. The paper evaluates the low frequency operation of the MMCs with embedded battery cells when used as traction drives for battery electric vehicles by means of numerical simulations obtained from Matlab/ Simulink and eexperimental results from a down-scaled prototype. Results confirm that MMCs with embedded battery cells do not present any operational issue in traction drives even at low speed.

Low frequency operation of Modular Multilevel Converters with embedded battery cells for traction drives

PIEGARI, LUIGI
2016-01-01

Abstract

Traditional Modular Multilevel Converters (MMCs) need a special care to be taken for starting and for operation at low motor speeds in traction drives. Indeed, the low-frequency current may cause a significant unbalance between the converter sub-module capacitor voltages and then disturb the output waveforms. MMCs with the battery cells integrated inside the sub-modules are an alternative configuration where the traditional battery management system of battery electric vehicles is replaced by the control of the converter, which individually balances all the cells. The paper evaluates the low frequency operation of the MMCs with embedded battery cells when used as traction drives for battery electric vehicles by means of numerical simulations obtained from Matlab/ Simulink and eexperimental results from a down-scaled prototype. Results confirm that MMCs with embedded battery cells do not present any operational issue in traction drives even at low speed.
2016
2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2016
9781509020676
9781509020676
Battery electric vehicles; modular multilevel converters; motor vector control; state of charge balancing; traction drives; Automotive Engineering; Mechanical Engineering; Control and Optimization; Electrical and Electronic Engineering; elettrici
File in questo prodotto:
File Dimensione Formato  
speedam_tricoli.pdf

Accesso riservato

Descrizione: paper
: Publisher’s version
Dimensione 1.29 MB
Formato Adobe PDF
1.29 MB Adobe PDF   Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1009446
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 12
  • ???jsp.display-item.citation.isi??? 10
social impact