TY - GEN

T1 - A branch current reallocation based energy balancing strategy for the Modular multilevel matrix converter operating around equal frequency

AU - Fan, Boran

AU - Wang, Kui

AU - Gu, Chunyang

AU - Wheeler, Pat

AU - Li, Yongdong

N1 - Publisher Copyright:
© 2016 IEEE.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.

PY - 2016/12/21

Y1 - 2016/12/21

N2 - The Modular multilevel matrix converter (M3C) is a promising topology for medium-voltage, high-power applications. Due to the modular structure, it is scalable, produces high quality output waveforms and can be fault tolerant. However, the M3C suffers from capacitor-voltage fluctuation if the output frequency is similar to the input frequency. This problem could limit the circuit's application in the adjustable speed drives (ASD). This paper introduces a theoretical analysis in the phasor-domain to find the branch energy equilibrium point of the M3C when operating with equal input and output frequencies. On the basis of this equilibrium point, a branch current reallocation based energy balancing control method is proposed to equalize the energy stored in the nine converter branches. With this novel control method, the M3C can effectively overcome the capacitor voltage fluctuation without using balancing techniques based on common mode voltage or applying reactive power at the input side.

AB - The Modular multilevel matrix converter (M3C) is a promising topology for medium-voltage, high-power applications. Due to the modular structure, it is scalable, produces high quality output waveforms and can be fault tolerant. However, the M3C suffers from capacitor-voltage fluctuation if the output frequency is similar to the input frequency. This problem could limit the circuit's application in the adjustable speed drives (ASD). This paper introduces a theoretical analysis in the phasor-domain to find the branch energy equilibrium point of the M3C when operating with equal input and output frequencies. On the basis of this equilibrium point, a branch current reallocation based energy balancing control method is proposed to equalize the energy stored in the nine converter branches. With this novel control method, the M3C can effectively overcome the capacitor voltage fluctuation without using balancing techniques based on common mode voltage or applying reactive power at the input side.

KW - Energy and balancing control

KW - Equal frequency

KW - Modular multilevel matrix converter (M3C)

UR - http://www.scopus.com/inward/record.url?scp=85010065691&partnerID=8YFLogxK

U2 - 10.1109/IECON.2016.7792966

DO - 10.1109/IECON.2016.7792966

M3 - Conference contribution

AN - SCOPUS:85010065691

T3 - IECON Proceedings (Industrial Electronics Conference)

SP - 3111

EP - 3116

BT - Proceedings of the IECON 2016 - 42nd Annual Conference of the Industrial Electronics Society

PB - IEEE Computer Society

T2 - 42nd Conference of the Industrial Electronics Society, IECON 2016

Y2 - 24 October 2016 through 27 October 2016

ER -