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- Title
Novel individual voltage balancing control scheme for multilevel cascade active-front-end rectifier.
- Authors
Chuang Liu; Fangyi Zhao; Guowei Cai; Nantian Huang; Jianze Wang; Mingyan Wang
- Abstract
In this study, a novel individual voltage balancing control scheme for multilevel cascade active-front-end rectifier is proposed to allow a different voltage setting capability among different dc outputs in series. First, the proportional resonant controller and admittance compensation controller are introduced for the active inner-current control loop of cascade activefront- end rectifier to achieve better steady-state and dynamic performance. Second, an assumption based on conservation of energy is proposed to decouple a series connected ac-dc system into several individual subsystems to facilitate the individual dc-bus controller design. Both simulation and experimental results based on the cascade two-unit cascade dual-buck/boosttype active-front-end rectifier proved the effectiveness of the proposed individual balancing control scheme, which also verified the proposed assumption.
- Subjects
VOLTAGE control; ELECTRIC balances; ELECTRIC current rectifiers; ELECTRIC controller design &; construction; CASCADE control; DIRECT currents
- Publication
IET Power Electronics (Wiley-Blackwell), 2014, Vol 7, Issue 1, p50
- ISSN
1755-4535
- Publication type
Article
- DOI
10.1049/iet-pel.2012.0257