Featured with the simple structure, V-clamp multilevel converter (VMC) shows good prospect in the high-voltage and high-power applications. But VMC is endangered by the deviation of dc-link capacitors voltage, especially under the high modulation index (MI) and high power factor (PF) condition. Thus, a voltage balancing strategy for three-phase seven-level VMC is proposed in this paper. This strategy re-designs the carriers and reference to achieve capacitors voltage balancing with reduced switching actions. Besides, an active compensation control for capacitors voltage is presented to improve the dynamic performance. Compared with the conventional virtual space vector modulation, the proposed strategy significantly reduces the switching loss while provides a better output voltage under the high MI and high PF condition. The simulation model and experimental prototype of VMC with 7.2kW/220V are constructed to verify the validity of the proposed strategy.
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页码:154640 / 154650
页数:11
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[1]
Alian Chen, 2008, IECON 2008 - 34th Annual Conference of IEEE Industrial Electronics Society, P3184, DOI 10.1109/IECON.2008.4758470
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Univ Malaya, UM Power Energy Dedicated Adv Ctr UMPEDAC, Kuala Lumpur 59990, Malaysia
Univ Malaya, Fac Engn, Dept Elect Engn, Kuala Lumpur 50603, MalaysiaUniv Malaya, UM Power Energy Dedicated Adv Ctr UMPEDAC, Kuala Lumpur 59990, Malaysia
Jamaludin, Jafferi
;
Abd Rahim, Nasrudin
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Univ Malaya, UM Power Energy Dedicated Adv Ctr UMPEDAC, Kuala Lumpur 59990, MalaysiaUniv Malaya, UM Power Energy Dedicated Adv Ctr UMPEDAC, Kuala Lumpur 59990, Malaysia
Abd Rahim, Nasrudin
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Ping, Hew Wooi
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Univ Malaya, UM Power Energy Dedicated Adv Ctr UMPEDAC, Kuala Lumpur 59990, MalaysiaUniv Malaya, UM Power Energy Dedicated Adv Ctr UMPEDAC, Kuala Lumpur 59990, Malaysia
机构:
Univ Malaya, UM Power Energy Dedicated Adv Ctr UMPEDAC, Kuala Lumpur 59990, Malaysia
Univ Malaya, Fac Engn, Dept Elect Engn, Kuala Lumpur 50603, MalaysiaUniv Malaya, UM Power Energy Dedicated Adv Ctr UMPEDAC, Kuala Lumpur 59990, Malaysia
Jamaludin, Jafferi
;
Abd Rahim, Nasrudin
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h-index: 0
机构:
Univ Malaya, UM Power Energy Dedicated Adv Ctr UMPEDAC, Kuala Lumpur 59990, MalaysiaUniv Malaya, UM Power Energy Dedicated Adv Ctr UMPEDAC, Kuala Lumpur 59990, Malaysia
Abd Rahim, Nasrudin
;
Ping, Hew Wooi
论文数: 0引用数: 0
h-index: 0
机构:
Univ Malaya, UM Power Energy Dedicated Adv Ctr UMPEDAC, Kuala Lumpur 59990, MalaysiaUniv Malaya, UM Power Energy Dedicated Adv Ctr UMPEDAC, Kuala Lumpur 59990, Malaysia