A Modular and Scalable Structure Using Multiparallel-Connected Series-Voltage Compensators for Supply Voltage Regulation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Article number7206584
Pages (from-to)4096-4110
Journal / PublicationIEEE Transactions on Power Electronics
Volume31
Issue number6
Publication statusPublished - 1 Jun 2016

Abstract

A modular and scalable voltage-regulation structure for enhancing service continuity and flexibly changing the system power rating is proposed. The methodology is based on paralleling multiple series-voltage compensators, namely multiparallel-connected series-voltage compensator (MSVC), to regulate the load voltage. The output voltage of each compensator is controlled locally by adjusting the phase angle of the output voltage of the inverter in each compensator, while the output current of each compensator is coupled to two adjacent compensators via two coupling transformers. The coupling transformers form a daisy-chained structure. The load current can be shared near-equally among the compensators through the transformer structure. The operating principle, steady-state and transient current-sharing characteristics of the architecture will be discussed and illustrated. A simplified design procedure will be given. A 3-kVA MSVC test bed with three parallel-connected single-phase compensator units has been built and evaluated. The response of the MSVC system with each compensator unit engaged and disengaged momentarily will be investigated. Such structure is applicable for regulating and stabilizing the supply voltage for consumers at the distribution side.

Research Area(s)

  • AC voltage regulation, daisy chained transformers, DC-AC power conversion, inverters, Synchronous series compensator

Citation Format(s)

A Modular and Scalable Structure Using Multiparallel-Connected Series-Voltage Compensators for Supply Voltage Regulation. / Cheung, Victor Sui-Pung; Chung, Henry Shu-Hung; Lo, Alan Wai-Lun.

In: IEEE Transactions on Power Electronics, Vol. 31, No. 6, 7206584, 01.06.2016, p. 4096-4110.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review