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新的超声波振动电源控制模型设计与应用
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作者 陈锡文 李晓谦 申双花 《振动.测试与诊断》 EI CSCD 北大核心 2017年第4期703-708,共6页
设计了基于BP神经网络的超声波振动电源控制模型,并应用到新的超声波振动电源中。在730℃铝合金熔体铸造实验过程中,新的超声波振动电源输出频率为19.259kHz^20.086kHz,超声波平均振幅为15.93μm,输出功率为1.073kW^1.203kW,晶粒的平均... 设计了基于BP神经网络的超声波振动电源控制模型,并应用到新的超声波振动电源中。在730℃铝合金熔体铸造实验过程中,新的超声波振动电源输出频率为19.259kHz^20.086kHz,超声波平均振幅为15.93μm,输出功率为1.073kW^1.203kW,晶粒的平均尺寸为143.63μm,晶粒尺寸大小均匀。系统仿真与实验结果表明,使用新的超声波振动电源控制模型可以提高电源输出功率和频率的精度,有助于超声波振动电源的稳定工作,提高了铝合金的铸造质量。 展开更多
关键词 超声波振动 电源 超声波辅助铸造 BP神经网络 电源控制模型
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Modeling and control of a small solar fuel cell hybrid energy system 被引量:1
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作者 LI Wei ZHU Xin-jian CAO Guang-yi 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2007年第5期734-740,共7页
This paper describes a solar photovoltaic fuel cell (PVEC) hybrid generation system consisting of a photovoltaic (PV) generator, a proton exchange membrane fuel cell (PEMFC), an electrolyser, a supercapacitor, a stora... This paper describes a solar photovoltaic fuel cell (PVEC) hybrid generation system consisting of a photovoltaic (PV) generator, a proton exchange membrane fuel cell (PEMFC), an electrolyser, a supercapacitor, a storage gas tank and power conditioning unit (PCU). The load is supplied from the PV generator with a fuel cell working in parallel. Excess PV energy when available is converted to hydrogen using an electrolyser for later use in the fuel cell. The individual mathematical model for each component is presented. Control strategy for the system is described. MATLAB/Simulink is used for the simulation of this highly nonlinear hybrid energy system. The simulation results are shown in the paper. 展开更多
关键词 Photovoltaic (PV) Fuel cell ELECTROLYSER Maximum power point tracking
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Finite Set-Model Predictive Current Control of Three-Phase Voltage Source Inverter for RES (Renewable Energy Systems) Applications
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作者 Ali Almaktoof Atanda Raji Tariq Kahn 《Journal of Energy and Power Engineering》 2014年第4期749-756,共8页
This paper focuses on a combination of three-phase VSI (voltage source inverter) with a predictive current control to provide an optimized system for three-phase inverters that control the load current. A FS-MPC (f... This paper focuses on a combination of three-phase VSI (voltage source inverter) with a predictive current control to provide an optimized system for three-phase inverters that control the load current. A FS-MPC (finite set-model predictive control) strategy for a three-phase VSI for RES (renewable energy systems) applications is implemented. The renewable energy systems model is used in this paper to investigate the system performance when power is supplied to resistive-inductive load. With three different cases, the evaluation of the system is done. Firstly, the robustness of control strategy under variable DC-Link is done in terms of the THD (total harmonic distortion). Secondly, with one prediction step, the system performance is tested using different sampling time, and lastly, the dynamic response of the system with step change in the amplitude of the reference is investigated. The simulations and result analyses are carried out using Matlab/Simulink to test the effectiveness and robustness of FS-MPC for two-level VSI with AC filter for resistive-inductive load supplied by a renewable energy system. 展开更多
关键词 Finite set-model predictive control three-phase voltage source inverter renewable energy system application AC filter Matlab/Simulink.
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