结合功率管理推力分配策略研究

由于动力定位对船舶的推进能力要求比较高,所以采用动态性能更好的电力推进方式已经成为了动力定位船舶的优先选择。对于电力推进船舶来说,推进器是其最大的负载,以起重船为研究对象,除了推进器以外,船上还有起重机和绞锚车等大功率负载。当船上其他大功率负载突然启动或者工作在风浪较大的环境时,会造成整个船舶电网功率波动较大,影响整个船舶电网的稳定性。文章提出自适应组合推力偏置结合功率管理分配方法,当船舶电网功率波动较大时,释放偏置的推力,降低整个船舶电网的功率波动,有助于增强电网的稳定性。

Strategy Research of Thrust Allocation with Power Management

As the highly requirements of the ship''s positioning capacity, the electric propulsion method with better dynamic performance has become the primary choice of DP ships. For a DP ship, the propeller is the largest load. Taking the crane ship as the object, in addition to the propeller, there are other high energy consumption loads onboard such as cranes and anchor winch. If other high energy consumption loads onboard suddenly start to operate, or the ship is sailing in bad sea environment, it will cause large variations in power consumption, and impact the stability of the entire ship power grid. The paper proposes an adaptive group thrust biasing combined with power management allocation method. When the power of the ship increases, the thrust biasing can release. The power fluctuation of the whole ship will be reduced and the stability of the power grid is enhanced.