A Novel Periodic Energy Control for Nonisolated DC–DC Converters With Overshoot Suppression

A novel periodic energy control (PEC) strategy for dc–dc converters is proposed in this letter, where the port nearest to the load is selected as the energy control target, considering the loss of switching and passive components. A simplified energy calculation method is derived to replace the inte...

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Veröffentlicht in:	IEEE transactions on power electronics 2023-10, Vol.38 (10), p.12325-12330
Hauptverfasser:	Ma, Tianlu, Jiang, Chaoqiang, Wang, Xiaosheng, Xiang, Jingchun, Mo, Liping, Chau, Kwok Tong
Format:	Artikel
Sprache:	eng
Schlagworte:	Buck converters Electric potential Mathematical analysis Passive components Proportional integral Voltage Voltage converters (DC to DC)
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container_title	IEEE transactions on power electronics
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creator	Ma, Tianlu Jiang, Chaoqiang Wang, Xiaosheng Xiang, Jingchun Mo, Liping Chau, Kwok Tong
description	A novel periodic energy control (PEC) strategy for dc–dc converters is proposed in this letter, where the port nearest to the load is selected as the energy control target, considering the loss of switching and passive components. A simplified energy calculation method is derived to replace the integration methods in terms of the possible error during successive integral calculations, meanwhile reducing the computational burden. Furthermore, PEC is extended to other nonisolated dc–dc converters. Finally, the high accuracy of the simplified energy calculation is proven in simulations, and a 100-kHz synchronous buck converter is established to verify the proposed PEC. During the reference voltage stepping, the inductor saturation and overshoot occur in proportional-integral control by tuning the duty cycle, whereas the output voltage can track the reference within 1.4 ms without any overshoot in single-loop PEC, which illustrates its advantage in overshoot suppression. Also, dual-loop PEC shares the same conclusion.
doi_str_mv	10.1109/TPEL.2023.3292358
format	Article
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A simplified energy calculation method is derived to replace the integration methods in terms of the possible error during successive integral calculations, meanwhile reducing the computational burden. Furthermore, PEC is extended to other nonisolated dc–dc converters. Finally, the high accuracy of the simplified energy calculation is proven in simulations, and a 100-kHz synchronous buck converter is established to verify the proposed PEC. During the reference voltage stepping, the inductor saturation and overshoot occur in proportional-integral control by tuning the duty cycle, whereas the output voltage can track the reference within 1.4 ms without any overshoot in single-loop PEC, which illustrates its advantage in overshoot suppression. 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A simplified energy calculation method is derived to replace the integration methods in terms of the possible error during successive integral calculations, meanwhile reducing the computational burden. Furthermore, PEC is extended to other nonisolated dc–dc converters. Finally, the high accuracy of the simplified energy calculation is proven in simulations, and a 100-kHz synchronous buck converter is established to verify the proposed PEC. During the reference voltage stepping, the inductor saturation and overshoot occur in proportional-integral control by tuning the duty cycle, whereas the output voltage can track the reference within 1.4 ms without any overshoot in single-loop PEC, which illustrates its advantage in overshoot suppression. 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subjects	Buck converters Electric potential Mathematical analysis Passive components Proportional integral Voltage Voltage converters (DC to DC)
title	A Novel Periodic Energy Control for Nonisolated DC–DC Converters With Overshoot Suppression
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