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Working principle of ship life crane energy storage device

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Working principle of ship life crane energy storage device [PDF]

6 FAQs about [Working principle of ship life crane energy storage device]

Do port cranes have energy management problems?

To the best of the authors’ knowledge, there are no studies for port cranes in which the energy management problem is solved by finding the optimal load-handling trajectory that minimizes load-handling time and reduces crane energy consumption. Furthermore, to study the port crane, a system modeling technique is required.

Is there an optimal load-handling trajectory for port cranes?

This paper is concerned with the development of an optimal load-handling trajectory for port cranes. The objective is to minimize load cycle time and reduce energy consumption. Energetic macroscopic representation formalism is used to model a port crane load-handling mechanism.

How can a port crane load-handling mechanism be simulated?

The objective is to minimize load cycle time and reduce energy consumption. Energetic macroscopic representation formalism is used to model a port crane load-handling mechanism. The crane model developed includes the mathematical model, the crane’s local control system, and a MATLAB/Simulink model for simulation.

How much energy does a port crane use?

Hoist acceleration duration is about 2.5 s, and steady-state duration is about 15 s. In summary, an average port crane has a power demand of between 1 MW and 2 MW, its energy consumption is between 8 kWh and 16 kWh per 30 s load cycle, and it has a regenerative capacity of between 5 kWh and 10 kWh per load cycle.

Does optimal Crane load trajectory reduce peak power and energy consumption?

Simulation results show that the optimal crane load trajectory is 38% faster and more productive than the nonoptimal crane load trajectory. Furthermore, the results show that the optimal trajectory reduces the cranes’ peak power and energy consumption by 36% when compared with the nonoptimal trajectory. 1. Introduction

Can port cranes become near-zero energy load systems?

In , it is proposed that port cranes can become “near-zero energy load systems” by using the regenerative energy (RE) stored in supercapacitors as the primary energy supply and only consuming from the grid the minimum energy needed for system losses and RE shortfall. This is, however, not currently possible given the SCs’ low energy density.

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