TY - GEN
T1 - Parallel interleaved VSCs
T2 - Influence of the PWM scheme on the design of the coupled inductor
AU - Gohil, Ghanshyamsinh
AU - Bede, Lorand
AU - Maheshwari, Ramkrishan
AU - Teodorescu, Remus
AU - Kerekes, Tamas
AU - Blaabjerg, Frede
PY - 2014/2/24
Y1 - 2014/2/24
N2 - The line current ripple and the size of the dc-link capacitor can be reduced by interleaving the carriers of the parallel connected Voltage Source Converters (VSCs). However, the interleaving of the carriers gives rise to the circulating current between the VSCs, and it should be suppressed. To limit the circulating current, magnetic coupling between the interleaved legs of the corresponding phase is provided by means of a Coupled Inductor (CI). The design of the CI is strongly influenced by the Pulsewidth Modulation (PWM) scheme used. The analytical model to evaluate the flux-linkage in the CI is presented in this paper. The maximum flux density and the core losses, being the most important parameters for the CI design, are evaluated for continuous PWM and discontinuous pulsewidth modulation (DPWM) schemes. The effect of these PWM schemes on the design of the CI is discussed. The simulation and the experimental results are finally presented to validate the analysis.
AB - The line current ripple and the size of the dc-link capacitor can be reduced by interleaving the carriers of the parallel connected Voltage Source Converters (VSCs). However, the interleaving of the carriers gives rise to the circulating current between the VSCs, and it should be suppressed. To limit the circulating current, magnetic coupling between the interleaved legs of the corresponding phase is provided by means of a Coupled Inductor (CI). The design of the CI is strongly influenced by the Pulsewidth Modulation (PWM) scheme used. The analytical model to evaluate the flux-linkage in the CI is presented in this paper. The maximum flux density and the core losses, being the most important parameters for the CI design, are evaluated for continuous PWM and discontinuous pulsewidth modulation (DPWM) schemes. The effect of these PWM schemes on the design of the CI is discussed. The simulation and the experimental results are finally presented to validate the analysis.
KW - Coupled inductor
KW - Interleaving
KW - Parallel
KW - PWM
KW - Voltage source converters (VSC)
UR - http://www.scopus.com/inward/record.url?scp=84949926949&partnerID=8YFLogxK
U2 - 10.1109/IECON.2014.7048730
DO - 10.1109/IECON.2014.7048730
M3 - Article in proceedings
AN - SCOPUS:84949926949
SP - 1693
EP - 1699
BT - IECON Proceedings (Industrial Electronics Conference)
PB - IEEE
ER -