期刊
INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS
卷 20, 期 4, 页码 1099-1110出版社
INST CONTROL ROBOTICS & SYSTEMS, KOREAN INST ELECTRICAL ENGINEERS
DOI: 10.1007/s12555-020-0542-2
关键词
AUV; DC output stabilizing; frequency tracking; wireless charging
资金
- China Scholarship Council (CSC) [201906575007]
- Fundamental Research Funds for the Central Universities [3132019103, 3132019344]
- National Natural Science Foundation of China [51009017, 51379002, 51777024]
- Liaoning Revitalization Talents Program [XLYC1807013]
This paper proposes a decoupling control scheme bridging frequency tracking and DC output stabilizing for the underwater wireless charging system to address the issues of system detuning and reduced power transfer efficiency caused by small variations in parameters in harsh marine environments.
In harsh marine environments, small variations in parameters of the underwater wireless charging system would lead to system detuning and dynamic fluctuation of DC output, thereby reducing power transfer efficiency and output performance. To achieve maximum efficiency tracking and DC output stabilizing, a decoupling control scheme bridging frequency tracking and DC output stabilizing for the wireless charging system of autonomous underwater vehicles (AUVs) is proposed. To be specific, the primary side of the wireless charging system adopts adaptive frequency tracking control (AFTC) to ensure that the operating frequency can always work near the resonant frequency during the charging process of the lithium battery. The secondary side adopts double closed-loop control of voltage and current based on buck converter such that the DC output can be stabilized for efficiently charging of lithium battery. Experimental results show that the proposed decoupling control scheme can realize frequency tracking on the primary side while the lithium battery can be charged with constant current and constant voltage, under maximum efficiency.
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