Modeling and Stability Analysis of Hybrid PV/Diesel/ESS in Ship Power System

Lan, Hai; Bai, Yifei; Wen, Shuli; Yu, David C.; Hong, Yi; Dai, Jinfeng; Cheng, Peng

doi:10.3390/inventions1010005

Cited by 43 publications

(23 citation statements)

References 24 publications

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“…AT Elsayed et al [96] presented a comparative study in order to determine the optimal hybridization of batteries, flywheel, and ultra-capacitors to minimize the frequency and voltage fluctuations, which are produced in a result of adding pulsed loads to the shipboard power system either on the AC or DC side. Hai Lan et al [97] modeled a high-speed FESS in order to smooth the photovoltaic power fluctuations and hence improving the power quality of a large oil tanker. The sinusoidal pulse width modulation (SPWM) along with constant torque angle control method is proposed such that to control charging and discharging of a flywheel.…”

Section: Battery-flywheelmentioning

confidence: 99%

Energy Storage Systems for Shipboard Microgrids—A Review

et al. 2018

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In recent years, concerns about severe environmental pollution and fossil fuel consumption has grabbed attention in the transportation industry, particularly in marine vessels. Another key challenge in ships is the fluctuations caused by high dynamic loads. In order to have a higher reliability in shipboard power systems, presently more generators are kept online operating much below their efficient point. Hence, to improve the fuel efficiency of shipboard power systems, the minimum generator operation with N-1 safety can be considered as a simple solution, a tradeoff between fuel economy and reliability. It is based on the fact that the fewer the number of generators that are brought online, the more load is on each generator such that allowing the generators to run on better fuel efficiency region. In all-electric ships, the propulsion and service loads are integrated to a common network in order to attain improved fuel consumption with lesser emissions in contrast to traditional approaches where propulsion and service loads are fed by separate generators. In order to make the shipboard power system more reliable, integration of energy storage system (ESS) is found out to be an effective solution. Energy storage devices, which are currently being used in several applications consist of batteries, ultra-capacitor, flywheel, and fuel cell. Among the batteries, lithium-ion is one of the most used type battery in fully electric zero-emission ferries with the shorter route (around 5 to 10 km). Hybrid energy storage systems (HESSs) are one of the solutions, which can be implemented in high power/energy density applications. In this case, two or more energy storage devices can be hybridized to achieve the benefits from both of them, although it is still a challenge to apply presently such application by a single energy storage device. The aim of this paper is to review several types of energy storage devices that have been extensively used to improve the reliability, fuel consumption, dynamic behavior, and other shortcomings for shipboard power systems. Besides, a summary is conducted to address most of the applied technologies mentioned in the literature with the aim of highlighting the challenges of integrating the ESS in the shipboard microgrids.

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Section: Battery-flywheelmentioning

confidence: 99%

Energy Storage Systems for Shipboard Microgrids—A Review

et al. 2018

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“…A control strategy was established under three cabin cooling conditions, which effectively reduced the emission of greenhouse gases. Park et al [31] and Lan et al [32] focused on solar-diesel hybrid ships, using batteries and flywheels, respectively, in order to smooth the fluctuation of the solar output power caused by environmental factors. Based on the experimental data of a PV system, a numerical analysis was carried out, with the results showing that the proposed method could effectively reduce a ship's fuel consumption.…”

Section: Introductionmentioning

confidence: 99%

A Novel Energy Management Strategy for a Ship’s Hybrid Solar Energy Generation System Using a Particle Swarm Optimization Algorithm

et al. 2020

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Due to the pressures caused by the energy crisis, environmental pollution, and international regulations, the largest ship-producing nations are exploring renewable resources, such as wind power, solar energy, and fuel cells to save energy and develop more environmentally-friendly ships. Solar energy has recently attracted a great deal of attention from both academics and practitioners; furthermore, the optimization of energy management has become a research topic of great interest. This paper takes a solar-diesel hybrid ship with 5000 car spaces as its research object. Then, following testing on this ship, experimental data were obtained, a multi-objective optimization model related to the ship’s fuel economy and diesel generator’s efficiency was established, and a partial swarm optimization algorithm was used to solve a multi-objective problem. The results show that the optimized energy management strategy for a hybrid energy system should be tested under different electrical loads. Moreover, the hybrid system’s economy should be taken into account when the ship’s power load is high, and the output power from the new energy generation system should be increased as much as possible. Finally, the diesel generators’ efficiency should be taken into consideration when the ship’s electrical load is low, and the injection power of the new energy system should be reduced appropriately.

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“…In charge mode, electrical power flows from the grid to FES, and disk speed increases (engine mode). In discharge mode, disk speed decreases, and the engine operates in generator mode [41]. FES is rated for speed, capable of low and high speeds with high and low inertia discs, respectively [42].…”

Section: Introductionmentioning

confidence: 99%

Storage Gravitational Energy for Small Scale Industrial and Residential Applications

2019

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Photovoltaic cells produce electric energy in a short interval during a period of low demand and show high levels of intermittency. One of the well-known solutions is to store the energy and convert it into a more stable form, to transform again into electricity during periods of high demand, in which the energy has a higher value. This process provides economic viability for most energy-storage projects, even for the least efficient and most common, such as batteries. Therefore, this paper aims to propose a storage system that operates with gravitational potential energy, considering a small-scale use. The development of this methodology presents the mathematical modeling of the system and compares the main characteristics with other systems. The dimensions of the considered system are 12-m shaft, 5-m piston height, and 4 m of diameter; it presented an energy storage of 11 kWh. Also, it has an efficiency of about 90%, a lifetime of 50 years, and higher storage densities compared to other systems.

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Modeling and Stability Analysis of Hybrid PV/Diesel/ESS in Ship Power System

Cited by 43 publications

References 24 publications

Energy Storage Systems for Shipboard Microgrids—A Review

Energy Storage Systems for Shipboard Microgrids—A Review

A Novel Energy Management Strategy for a Ship’s Hybrid Solar Energy Generation System Using a Particle Swarm Optimization Algorithm

Storage Gravitational Energy for Small Scale Industrial and Residential Applications

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