https://scholars.lib.ntu.edu.tw/handle/123456789/501259
標題: | Dc-bus dual-level control strategy for pv power system with dual-mode operation | 作者: | Tsai, T.-W. Yang, C.-J. Li, Y.-C. Chen, Y.-M. Chang, Y.-R. YAOW-MING CHEN |
關鍵字: | dc-bus voltage control (DCVC); maximum power point tracking (MPPT); optimal AC line current regulation; PV power system | 公開日期: | 2019 | 卷: | 34 | 期: | 1 | 起(迄)頁: | 267-276 | 來源出版物: | IEEE Transactions on Energy Conversion | 摘要: | An autonomous dc-bus dual-level control (DDLC) strategy is proposed for the two-stage three-phase photovoltaic power system. During the grid-fault situation, the second-stage inverter may lose the ability to regulate the dc-bus voltage and the first-stage boost converter has to change its mode from maximum power point tracking mode to dc-bus voltage control (DCVC) mode. However, the communication between the two-stage circuits must be established. The circuit complexity and cost will increase while the system's scalability and flexibility will be reduced. With the proposed DDLC strategy, the dc-bus voltage is controlled into different levels for different operation modes, without the need of communication mechanism. No extra sensors or circuits are required. Two important design parameters for the proposed DDLC are derived thoroughly. The computer simulations and hardware experimental results of a 4 kVA prototype circuit are presented to validate the performance of the proposed DDLC strategy. © 1986-2012 IEEE. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/501259 | DOI: | 10.1109/TEC.2018.2880955 | SDG/關鍵字: | Computer hardware; DC-DC converters; Level control; Maximum power point trackers; Photovoltaic cells; Voltage control; Ac line current regulations; Circuit complexity; Communication mechanisms; Dc bus voltage controls; Dual-mode operation; Maximum Power Point Tracking; Photovoltaic power systems; PV power systems; Electric power system control |
顯示於: | 電機工程學系 |
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