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dc.contributor.authorZhao, Binen_US
dc.contributor.authorZhang, Xinen_US
dc.contributor.authorZhang, Zheen_US
dc.identifier.citationZhao, B., Zhang, X. & Zhang, Z. (2019). Sequential offline-online-offline measurement approach for high-frequency LCLC resonant converters in the TWTA applications. IEEE Transactions On Industrial Electronics, 67(2), 1568-1579.
dc.description.abstractThe high-frequency LCLC resonant converter is one of the important parts of the two-stage power supply in the space travelling-wave tube amplifier application. Usually, the high-frequency LCLC resonant converter utilizes open-loop control and simultaneously sets its switching frequency and duty cycle to the required values to guarantee low cost and high power efficiency. However, the required switching frequency and duty cycle are determined by the transformer parasitic parameters. Therefore, how to measure the real transformer parasitic parameters under the real working conditions precisely becomes very important to the high-frequency LCLC resonant converter. The conventional way to measure the transformer parasitics is to employ an offline impedance analyzer. However, the transformer parasitics under real operating conditions may deviate from the offline measured results. The online measurement methods can obtain the real values when the high-frequency LCLC resonant converter is working, but these online approaches also mean additional cost and complex implementation requirement. To solve the above-mentioned problems, a sequential offline-online-offline (SO3) measurement method is proposed in this paper. With this SO3 measurement approach, all the real transformer parasitics can be easily obtained in a low cost and simple implementation way, which combines the advantages of both traditional offline and online measurement methods while removing their corresponding shortcomings. The proposed method is validated by the experiments.en_US
dc.description.sponsorshipMinistry of Education (MOE)en_US
dc.description.sponsorshipNanyang Technological Universityen_US
dc.relationRG 85/18en_US
dc.relation.ispartofIEEE Transactions on Industrial Electronicsen_US
dc.rights© 2019 IEEE. All rights reserved.en_US
dc.subjectEngineering::Electrical and electronic engineeringen_US
dc.titleSequential offline-online-offline measurement approach for high-frequency LCLC resonant converters in the TWTA applicationsen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.subject.keywordsResonant Convertersen_US
dc.subject.keywordsHigh Frequencyen_US
dc.description.acknowledgementThis work was supported in part by Singapore ACRF Tier 1 under Grant RG 85/18 and in part by the Nanyang Technological University (NTU) Start-up Grant for Prof. Zhang Xin.en_US
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