Sequential offline-online-offline measurement approach for high-frequency LCLC resonant converters in the TWTA applications
The 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 cycl...
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sg-ntu-dr.10356-1553142022-02-23T06:22:23Z Sequential offline-online-offline measurement approach for high-frequency LCLC resonant converters in the TWTA applications Zhao, Bin Zhang, Xin Zhang, Zhe School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Resonant Converters High Frequency The 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. Ministry of Education (MOE) Nanyang Technological University This 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. 2022-02-23T06:22:23Z 2022-02-23T06:22:23Z 2019 Journal Article Zhao, 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. https://dx.doi.org/10.1109/TIE.2019.2898601 0278-0046 https://hdl.handle.net/10356/155314 10.1109/TIE.2019.2898601 2-s2.0-85068720347 2 67 1568 1579 en RG 85/18 IEEE Transactions on Industrial Electronics © 2019 IEEE. All rights reserved. |
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Engineering::Electrical and electronic engineering Resonant Converters High Frequency Zhao, Bin Zhang, Xin Zhang, Zhe Sequential offline-online-offline measurement approach for high-frequency LCLC resonant converters in the TWTA applications |
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The 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. |
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School of Electrical and Electronic Engineering |
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School of Electrical and Electronic Engineering Zhao, Bin Zhang, Xin Zhang, Zhe |
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Article |
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Zhao, Bin Zhang, Xin Zhang, Zhe |
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Zhao, Bin |
title |
Sequential offline-online-offline measurement approach for high-frequency LCLC resonant converters in the TWTA applications |
title_short |
Sequential offline-online-offline measurement approach for high-frequency LCLC resonant converters in the TWTA applications |
title_full |
Sequential offline-online-offline measurement approach for high-frequency LCLC resonant converters in the TWTA applications |
title_fullStr |
Sequential offline-online-offline measurement approach for high-frequency LCLC resonant converters in the TWTA applications |
title_full_unstemmed |
Sequential offline-online-offline measurement approach for high-frequency LCLC resonant converters in the TWTA applications |
title_sort |
sequential offline-online-offline measurement approach for high-frequency lclc resonant converters in the twta applications |
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2022 |
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https://hdl.handle.net/10356/155314 |
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1725985519206137856 |