Through resonance oscillation between compensating capacitor and system inductance,the power factor of the contactless charging system of AUV is maximized,and thus the realization the high-efficient transmission of electrical energy.In deep-sea environment,eccentricity and space will be created in the primary and secondary magnetic core of the system under the impact of water,which result in the change of coupling factor and the resonant frequency,and untimately lead to the decrease of charging capability.In this thesis,the author tries to study how to maintain the running of the charging system through the control of frequecy under the impact of water,and thus the improvement of the transmission capacity;what's more,the author also puts forward the methods to realize the frequency control of contactless charging system of AUV under the control of PLL.%水下自主航行器(AUV)非接触式充电系统通过补偿电容与系统电感的谐振作用,使系统的功率因数达到最大,以实现电能的高效传输.在深海环境下,系统初、次级磁芯在受到水流冲击后会产生偏心和间隙,引起耦合系数发生变化,系统的谐振频率点也会发生改变,充电能力下降.本文研究在水流冲击作用下,通过频率控制使系统始终在谐振频率点运行以提高系统的传输能力,并提出了基于锁相环控制的AUV非接触式充电系统的频率控制实现方式.
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