TY - JOUR
T1 - An Integrated Inductor for Parallel Interleaved VSCs and PWM Schemes for Flux Minimization
AU - Gohil, Ghanshyamsinh Vijaysinh
AU - Bede, Lorand
AU - Teodorescu, Remus
AU - Kerekes, Tamas
AU - Blaabjerg, Frede
PY - 2015/12
Y1 - 2015/12
N2 - The interleaving of the carrier signals of the parallel Voltage Source Converters (VSCs) can reduce the harmonic content in the resultant switched output voltages. As a result, the size of the line filter inductor can be reduced. However, in addition to the line filter, an inductive filter is often required to suppress the circulating current. The size of the system can be reduced by integrating these two inductors in a single magnetic component. A integrated inductor, which combines the functionality of both the line filter inductor and the circulating current filter inductor is presented. The PulseWidth Modulation (PWM) schemes to reduce the flux in some parts of the integrated inductor are also analyzed. The flux reduction achieved by using these schemes is demonstrated by comparing these schemes with the conventional space vector modulation and the $60\degree$ clamped discontinuous PWM scheme. The impact of these PWM schemes on the harmonic performance is also discussed. Simulation and experimental results are presented to validate the analysis.
AB - The interleaving of the carrier signals of the parallel Voltage Source Converters (VSCs) can reduce the harmonic content in the resultant switched output voltages. As a result, the size of the line filter inductor can be reduced. However, in addition to the line filter, an inductive filter is often required to suppress the circulating current. The size of the system can be reduced by integrating these two inductors in a single magnetic component. A integrated inductor, which combines the functionality of both the line filter inductor and the circulating current filter inductor is presented. The PulseWidth Modulation (PWM) schemes to reduce the flux in some parts of the integrated inductor are also analyzed. The flux reduction achieved by using these schemes is demonstrated by comparing these schemes with the conventional space vector modulation and the $60\degree$ clamped discontinuous PWM scheme. The impact of these PWM schemes on the harmonic performance is also discussed. Simulation and experimental results are presented to validate the analysis.
KW - Voltage Source Converters (VSC)
KW - Parallel
KW - Filter design
KW - Pulse-width modulation
KW - Integrated inductor
KW - Interleaving
KW - Parallel inverters
KW - parallel interleaved inverters
KW - parallel interleaved converters
KW - Modulation scheme
KW - Phase-shifted carrier-based pulsewidth modulation (PSC-PWM)
KW - circulating current
KW - circulating current suppression
KW - common mode circulating current
KW - common-mode inductor
KW - common-mode voltage
KW - common-mode voltage reduction
KW - active zero state PWM
KW - near state PWM
U2 - 10.1109/TIE.2015.2455059
DO - 10.1109/TIE.2015.2455059
M3 - Journal article
SN - 0278-0046
VL - 62
SP - 7534
EP - 7546
JO - I E E E Transactions on Industrial Electronics
JF - I E E E Transactions on Industrial Electronics
IS - 12
ER -