The DC electric propulsion system, as a new electric propulsion technology, is one of the hot topics in cur-rent research. At present, the advantages of the DC electric propulsion system have been gradually understood, and how to choose the appropriate electric propulsion system according to the specific use, cost, economy, space and other factors in the new ship design should be under investigation. This paper compares the DC and AC electric propulsion system. From the perspective of practical application, taking the design of "SWATH type scientific research vessel" as an example, the DC propulsion system solution of this ship is introduced. Furthermore, the merits and problems that need attention are analyzed. The results show that the DC electric propulsion system has obvious advantages in space, fuel consumption and other as-pects. With the development of this technology, the DC electric propulsion system will be widely used in the field of low voltage and special purpose ship.%直流电力推进系统作为一项新兴的电力推进技术,是目前的研究热点之一.新兴的直流电力推进系统具有哪些优点,在新船设计中如何根据船舶的具体用途、成本、经济性、空间等因素选择合适的电力推进系统都是目前值得研究的问题.为此,对直流与交流电力推进系统进行比较,并从实际应用的角度出发,以正在设计的小水线面双体型科考船为例,对该船直流电力推进系统方案进行介绍,对实际设计应用中发现的优点及需要注意的问题进行分析.结果表明,对于低压特种船舶,直流电推系统相比交流电推系统在空间、油耗等方面具有明显优势.随着该技术的发展,直流电力推进系统将在低压特种船舶领域得到广泛应用.
展开▼
