船舶电力推进系统在波浪中的功率节能与转速控制研究

Research on power saving and speed control of ship electric propulsion system in waves

传统船舶的动力推进系统以柴油机、燃气轮机为主,这种推进方式主要存在的问题是船舶动力系统响应较慢,且容易产生气体污染和水污染。随着电工电子技术的不断发展,变频器、永磁同步电机等电子技术逐渐发展成熟,船舶电力推进系统获得了极大的发展。电力推进系统是指船舶原动机产生的机械能首先转化为电能,存储在船舶电池中,然后利用电池推动船舶螺旋桨,使船舶产生前进的动力。船舶电力推进系统具有调速方便,结构简单、功率稳定等优点。本文研究的主要内容是船舶电力推进系统的功率与转速控制,通过建立系统的数学模型进行详细研究。

The propulsion system of traditional ships is mainly composed of diesel engine and gas turbine. The main problems of this propulsion mode are that the response of the propulsion system is slow, and it is easy to produce gas pollution and water pollution. With the continuous development of electrical and electronic technology, frequency converter, permanent magnet synchronous motor and other electronic technology gradually mature, marine electric propulsion system has been greatly developed. Electric propulsion system refers to the mechanical energy generated by the ship’s prime mover is first converted into electrical energy, stored in the ship’s batteries, and then use the batteries to propel the ship’s propeller, so that the ship has the power to move forward. The marine electric propulsion system has the advantages of convenient speed adjustment, simple structure and stable power. The main content of this paper is the power and speed control of marine electric propulsion system. The mathematical model of the system is established and studied in detail.