A multi-phase stacked interleaved buck converter(SIBC)is suitable for large-power water electrolysis applications due to its merits of high current output capability and zero output current ripple.However,the auxiliar...A multi-phase stacked interleaved buck converter(SIBC)is suitable for large-power water electrolysis applications due to its merits of high current output capability and zero output current ripple.However,the auxiliary converter used to compensate for the current ripple still has to withstand high voltage stress.This paper proposes a new multi-phase SIBC applied in the multicarrier energy system integrating electricity,heat,and hydrogen.A resistor-capacitor voltage divider is used to provide the input voltage of the auxiliary converter and as a heater for the thermal loads.Thus,the voltage stress of the auxiliary converter can be reduced at a low cost,and the size of the filter inductor can be reduced.With accurate voltage and current analysis and appropriate parameter design,the voltage stresses of both the switches and capacitors in the auxiliary converter can be further limited within an expected range.The experimental results verify the correctness of the topology,modulation,analysis,and design methods.A comparison with the conventional method is made in terms of cost,volume,and efficiency to show the advantages of the proposed method.展开更多
High-performance microprocessors have rapidlyevolved and become ubiquitous in modern society.However,their power supply has become a significant factor limiting their overall performance.A power delivery module,known ...High-performance microprocessors have rapidlyevolved and become ubiquitous in modern society.However,their power supply has become a significant factor limiting their overall performance.A power delivery module,known as a voltage regulator module(VRM),is required to provide high voltage,low current,and a fast transient response to meet microprocessor demands.An interleaved parallel-buck converter is suitable for VRM applications.Selecting an appropriate control strategy for the interleaved converter can help achieve high precision and fast response,thereby optimizing performance.First,the operating principles of interleaved parallel converters are analyzed.The relationship between the number of phases and conversion efficiency is also examined.Subsequently,commonly employed control techniques for interleaved converters are reviewed,discussing their respective advantages and limitations,along with an analysis of their suitabilityfor phase-shedding strategies.A phase-shedding technique for interleaved converters is then introduced.Finally,the shortcomings of current control approaches for interleaved buck converters are outlined,and potential future research directions are suggested.These insights aim to enhance control performance and advance practical engineering applications.展开更多
基金supported in part by the National Natural Science Foundation of China(52077190)Cultivation Project for Basic Research and Innovation of Yanshan University(2021LGQN007)Science and Technology Project of Hebei Education Department(QN2024202).
文摘A multi-phase stacked interleaved buck converter(SIBC)is suitable for large-power water electrolysis applications due to its merits of high current output capability and zero output current ripple.However,the auxiliary converter used to compensate for the current ripple still has to withstand high voltage stress.This paper proposes a new multi-phase SIBC applied in the multicarrier energy system integrating electricity,heat,and hydrogen.A resistor-capacitor voltage divider is used to provide the input voltage of the auxiliary converter and as a heater for the thermal loads.Thus,the voltage stress of the auxiliary converter can be reduced at a low cost,and the size of the filter inductor can be reduced.With accurate voltage and current analysis and appropriate parameter design,the voltage stresses of both the switches and capacitors in the auxiliary converter can be further limited within an expected range.The experimental results verify the correctness of the topology,modulation,analysis,and design methods.A comparison with the conventional method is made in terms of cost,volume,and efficiency to show the advantages of the proposed method.
基金Supported by Guangdong Basic and Applied Basic Research Foundation(2023A1515240033)Basic and Applied Basic Research Foundation of Guangzhou(2024A04J6540)Guangdong Science Fund for Distinguished Young Scholars(2022B1515020002).
文摘High-performance microprocessors have rapidlyevolved and become ubiquitous in modern society.However,their power supply has become a significant factor limiting their overall performance.A power delivery module,known as a voltage regulator module(VRM),is required to provide high voltage,low current,and a fast transient response to meet microprocessor demands.An interleaved parallel-buck converter is suitable for VRM applications.Selecting an appropriate control strategy for the interleaved converter can help achieve high precision and fast response,thereby optimizing performance.First,the operating principles of interleaved parallel converters are analyzed.The relationship between the number of phases and conversion efficiency is also examined.Subsequently,commonly employed control techniques for interleaved converters are reviewed,discussing their respective advantages and limitations,along with an analysis of their suitabilityfor phase-shedding strategies.A phase-shedding technique for interleaved converters is then introduced.Finally,the shortcomings of current control approaches for interleaved buck converters are outlined,and potential future research directions are suggested.These insights aim to enhance control performance and advance practical engineering applications.
