基于DCX的水下恒流转恒压高效变换与控制研究  

High-efficient Conversion and Control of Underwater Constant-current to Constant-voltage Based on DCX

作　　者：赵锦波 胡云耕 舒欣 刘庆 夏远庚 方支剑 ZHAO Jinbo;HU Yungeng;SHU Xin;LIU Qing;XIA Yuangeng;FANG Zhijian(Laboratory of Low-frequency Electro-magnetic Communication Technology with the 722 Research Institute,CSSC,Wuhan 430205,China;School of Automation,China University of Geosciences(Wuhan),Wuhan 430074,China)

机构地区：[1]中国船舶集团有限公司第七二二研究所低频电磁通信技术实验室,武汉430205 [2]中国地质大学(武汉)自动化学院,武汉430074

出　　处：《电源学报》2025年第1期51-58,共8页Journal of Power Supply

摘　　要：恒流供电系统因其较强的抗故障能力,适用于环境恶劣的海底远距离供电,但海底设备均采用恒压供电,因此需使用恒流转恒压变换装置将恒流输入转换为恒压输出,然后为该类设备提供电能。为解决宽负载范围下恒流转恒压的高效变换与高压隔离控制的关键问题,首先提出1种分流调节器电路和直流变压器级联的恒流转恒压变换拓扑,实现恒流到恒压的宽范围高效变换;其次,针对高压隔离下的输出控制问题,研究基于输入侧检测的输出电压间接控制策略,无需高成本、大体积的输出隔离检测器件实现对输出电压的精准控制;最后,搭建输入电流为1 A、额定功率为500 W的实验样机,验证恒流转恒压变换器电能变换技术的可行性。The constant-current power supply system is suitable for remote seabed power supply in a harsh environment owing to its strong anti-failure capability.As all the seabed equipment adopts constant-voltage power supply,a constant-current to constant-voltage conversion device is needed to convert constant-current input into constant-voltage output to provide electric energy for the seabed equipment.To solve the problem that an efficient conversion from constant-current to constant-voltage in a wide load range as well as a high-pressure isolation control,a constant-current to constant-voltage converter topology with cascade of a shunt regulator circuit and a DC transformer is proposed to achieve the efficient conversion from constant-current to constant-voltage in a wide range.Aimed at the output control problem under high-pressure isolation,an indirect control strategy for output voltage based on input-side detection is studied to achieve an accurate control of output voltage without the need of high-cost and large-volume output isolation detection devices.Finally,an experimental prototype with input of 1 A and rated power of 500 W was built to verify the feasibility of the power conversion technology of constant-current to constant-voltage converter.

关 键 词：直流变压器 恒流转恒压 分流调节器 间接控制 

分 类 号：TM46[电气工程—电器]