NDLI: Control and performance of a cascade low-frequency high-power multilevel converter for SSR mitigation

Content Provider	IEEE Xplore Digital Library
Author	Xiaoyu Wang Tao Zhang Quan Liu Qixun Yang
Copyright Year	2013
Description	Author affiliation: Shangdi Inf. Ind., Beijing Sifang Autom. Co. Ltd., Beijing, China (Tao Zhang; Quan Liu) \|\| State Key Lab. of New Energy Power Syst., North China Electr. Power Univ., Beijing, China (Xiaoyu Wang; Qixun Yang)
Abstract	Large turbine generator units connected to series-compensated system may cause the sub-synchronous resonance (SSR) problem. It would result in the damages to the turbine-generator shaft. To solve the problem, the controllable sub- and super-synchronous current is injected into generator stators. So the 10 kV, 10MVA cascade low-frequency high-power multilevel converter is designed to output the sub- and super-synchronous current. Control algorithm and circuit structure design method are presented in this paper. To validate the effectiveness of proposed control method as well as the control logic, large capacity sub-synchronous tracing field tests are conducted. The result demonstrated that the proposed method can completely realize referenced low-frequency current tracing, the DC voltage capacitor stability and control with excellent steady and dynamic characteristic. It will play important role in practical engineering of the mitigation of SSR.
Sponsorship	IEEE Hong Kong Sect., IE/PE/IA/PEL Joint Chapt.
Starting Page	1
Ending Page	6
File Size	524201
Page Count	6
File Format	PDF
ISBN	9781479925223
DOI	10.1109/APPEEC.2013.6837257
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-12-08
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Damping Field test Capacitors Sub-synchronous resonance(SSR) Switches Cascade multilevel converter Low-frequency current Generators Automatic voltage control Power generation DC capacitor voltage
Content Type	Text
Resource Type	Article

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