Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Control process design for linking energy storage device to ship power source

선박 전력원에 에너지 저장장치 연계를 위한 제어 프로세스 설계

  • Oh, Ji-Hyun (Department of Engineering, Korea Maritime and Ocean University) ;
  • Lee, Jong-Hak (Department of Engineering, Korea Maritime and Ocean University) ;
  • Oh, Jin-Seok (Division of Marine System Engineering, Korea Maritime and Ocean University)
  • Received : 2021.07.29
  • Accepted : 2021.09.30
  • Published : 2021.11.30
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Abstract

As IMO environmental regulations are tightened, the need to establish a system that can reduce emissions is increasing, and for this purpose, various power control management systems have been studied and implemented as a new energy management system for ships. In this study, we design a control process through modeling for Bi-Directional Converter (BDC) application with bi-directional power flow to link batteries, which are energy storage devices, to conventional generator power systems, and propose mechanisms for batteries optimized for varying loads. This work models MATLAB/Simulink as a BDC and simulates current control and state of charge (SOC) optimization at the time of charging and discharging batteries according to load scenarios. Through this, the battery, power, and load were interlocked so that the generator operated on board could be operated in the optimal operation range, and power control management was performed to enable the generator to operate in the high fuel efficiency range.

본 연구에서는 에너지 저장장치인 배터리를 기존의 발전기 전력계통에 연계하기 위하여 양방향 전력의 흐름이 가능한 BDC(Bi-Directional Converter) 적용을 위해 모델링을 통하여 제어 프로세스를 설계하고, 해상 상황에 따라 변화하는 부하에 최적화된 전력 공급이 가능한 배터리의 충전 혹은 방전 메커니즘에 대하여 제안한다. 본 연구는 MATLAB/Simulink를 이용하여 BDC를 모델링 하였으며 부하 시나리오에 따라 배터리 충전 및 방전 시의 전류 제어 및 SOC(State Of Charge) 최적화를 시뮬레이션 하였다. 이를 통해 선내 운전되는 발전기가 최적운전 범위에 운전될 수 있도록 배터리와 전력 및 부하를 연동할 수 있도록 하였으며, 발전기가 높은 연료효율 범위에서 운전될 수 있도록 전력제어관리를 수행하였다.

Keywords

Acknowledgement

Following are results of a study on the "Leaders in INdustry-university Cooperation +" Project and NRF-2018R1D1A1B07049361, supported by the Ministry of Education and National Research Foundation of Korea.

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