Aiming at the problem of large volume, high power consumption, poor heat dissipation, high noise for ship electrical equipment, modular water-cooled plate, sensing and control unit were applied into the water cooling system of ship electrical equipment. After the analysis of this working flow, the relationship among the electrical equipment body, the circu-lating water system and the monitoring and protection device was established. The cooling method of ship electrical equip-ment was put forward. The system was applied in kinds of experiments and ships, the results indicate thatThe system can im-prove power density, stability, cooling efficiency, noise level.%针对船舶电气设备体积大、功耗高、散热差、噪音高等问题，将气液交换器、液冷板、热管等应用到船舶电气设备高效冷却系统中。对该系统的工作流程进行分析，建立电气设备本体、高效冷却系统和监控与保护装置之间的关系，提出船舶电气设备高效冷却方案。在联调试验和船舶电气设备上对该高效冷却方案进行实际应用，结果表明：该系统可提高船舶电气设备的功率密度、稳定性、冷却效率及噪音水平。
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