TY - JOUR
T1 - Mitigation of noneliminated harmonics of SHEPWM three-level multipulse three-phase active front end converters with low switching frequency for meeting standard IEEE-519-92
AU - Pontt, Jorge
AU - Rodríguez, José
AU - Huerta, Rodrigo
N1 - Funding Information:
Manuscript received October 8, 2003; revised January 9, 2004. This work was supported by the Chilean Fund CONICYT under Grant 1040374 and the Uni-versidad Federico Santa Maria. Recommended by Associate Editor V. Staudt. The authors are with the Department of Electronics, Universidad Técnica Federico Santa María, Valparaíso 110-V, Chile (e-mail: [email protected]; [email protected]; [email protected]). Digital Object Identifier 10.1109/TPEL.2004.836616
PY - 2004/11
Y1 - 2004/11
N2 - Three-level neutral-point clamped (NPC) active-front-end three-phase (3LAFE) converters can be applied to high-power medium voltage applications, with four-quadrant unity-power-factor operation, allowing a broad range for power conversion systems, such as decentralized energy distribution and utilization. Switching losses and network interaction limit the operation of 3LAFE high-power converters, especially when GTO-converters are used. This is why low switching frequency and reduced harmonic distortion are the main goals when using optimum pattern pulsewidth modulation (PWM) where the selective harmonic elimination modulation method (SHEPWM) is used. This paper introduces a simple strategy to choose a good operating point for two 3LAFE converters in a 12-pulse configuration based on the behavior of noneliminated harmonics by SHE method. This strategy allows accomplishing the meeting of the IEEE std. 519-92 and jointly, the minimization or elimination of harmonics filters. A complete characterization is given as a base of SHE method and for noneliminated harmonics behavior, as well as the full explanation of the optimization strategy. Experimental results show the strategy effectiveness for reducing harmonic distortion and meeting IEEE std. 519-92.
AB - Three-level neutral-point clamped (NPC) active-front-end three-phase (3LAFE) converters can be applied to high-power medium voltage applications, with four-quadrant unity-power-factor operation, allowing a broad range for power conversion systems, such as decentralized energy distribution and utilization. Switching losses and network interaction limit the operation of 3LAFE high-power converters, especially when GTO-converters are used. This is why low switching frequency and reduced harmonic distortion are the main goals when using optimum pattern pulsewidth modulation (PWM) where the selective harmonic elimination modulation method (SHEPWM) is used. This paper introduces a simple strategy to choose a good operating point for two 3LAFE converters in a 12-pulse configuration based on the behavior of noneliminated harmonics by SHE method. This strategy allows accomplishing the meeting of the IEEE std. 519-92 and jointly, the minimization or elimination of harmonics filters. A complete characterization is given as a base of SHE method and for noneliminated harmonics behavior, as well as the full explanation of the optimization strategy. Experimental results show the strategy effectiveness for reducing harmonic distortion and meeting IEEE std. 519-92.
KW - Harmonics
KW - Medium voltage applications
KW - Power converters
KW - Selective harmonics elimination (SHE)
KW - Three-level neutral-point clamped (NPC) converters
UR - http://www.scopus.com/inward/record.url?scp=9244257880&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2004.836616
DO - 10.1109/TPEL.2004.836616
M3 - Article
AN - SCOPUS:9244257880
VL - 19
SP - 1594
EP - 1600
JO - IEEE Transactions on Power Electronics
JF - IEEE Transactions on Power Electronics
SN - 0885-8993
IS - 6
ER -