Design and Implementation for the Medium Voltage DC-DC Converter (MVC) of Underwater Power Transmission Network

doi:10.3901/JME.2019.04.218

Abstract

Abstract: In order to improve the stability of the submarine observation network, a medium voltage DC-DC converter circuit structure for a submarine observation network is proposed and its dynamic characteristics are discussed. Considering the high input voltage and high output power of the converter, a multi-module composite structure combining series input series output and series input parallel output is adopted to reduce the volume and realize modular design. The voltage-type PWM control technology with advanced compensation value realizes anti-interference ability and fast response. The relay feedback method is used to adjust the PI parameter of the error amplifier, which reduces the output overshoot voltage and steady-state fluctuation amplitude of the system. In order to analyze the transient response of the system under large signals such as startup and load change, a simulation model of the converter is established. The simulation and experimental results show that the modular design can achieve the minimum volume and reach the heat dissipation requirement. The PI parameters under no overshoot tuning rule can greatly reduce the output overshoot voltage and steady state fluctuation amplitude. Finally, the steady state characteristics of the medium voltage converter are improved, and it shows good dynamic characteristics during start-up and load change.

Key words: circuit simulation, medium voltage DC-DC converter, power supply system, submarine observation network

CLC Number:

TM421

XIAO Sa, ZHANG Feng, LI Dejun, YANG Canjun, JIN Bo, CHEN Yanhu. Design and Implementation for the Medium Voltage DC-DC Converter (MVC) of Underwater Power Transmission Network[J]. Journal of Mechanical Engineering, 2019, 55(4): 218-225.

References

[1] AUSTIN T,EDSON J,MCGILLIS W,et al. The martha's vineyard coastal observatory:A long term facility for monitoring air-sea processes[C]//Oceans. Providence USA:IEEE,2000,3:1937-1941.
[2] COCIMANO R. A comparison of AC and DC power feeding systems based on the NEMO experiences[J]. Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment,2009,602(1):171-173.
[3] MAYER L A,RAYMOND R,GLANG G,et al. High-resolution mapping of mines and ripples at the Martha's Vineyard coastal observatory[J]. IEEE Journal of Oceanic Engineering,2007,32(1):133-149.
[4] AIK D L H,ANDERSSON G. Analysis of voltage and power interactions in multi-infeed HVDC systems[J]. IEEE Transactions on Power Delivery,2013,28(2):816-824.
[5] DEWEY R,ROUND A,MACOUN P,et al. The VENUS cabled observatory:Engineering meets science on the seafloor[C]//Oceans. Aberdeen,Scotland:IEEE,2007:1-7.
[6] BARNES C R,BEST M M R,JOHNSON F R,et al. Challenges,benefits and opportunities in operating cabled ocean observatories:Perspectives from NEPTUNE Canada[C]//Underwater Technology. Tokyo,Japan:IEEE,2011:1-7.
[7] TILMANN F,HOWE B,BUTLER R,et al. Proposal for using commercial submarine telecommunications cables for monitoring earthquakes and tsunamis-the SMART cable concept[C]//EGU General Assembly Conference. EGU General Assembly Conference Abstracts,Vienna,Austria:2017.
[8] HOWE B,AUCAN J,TILMANN F,et al. Submarine cable systems for future societal needs[R]. ITU-T Workshops and Seminars,2016.
[9] 杨灿军,张锋,陈燕虎,等. 海底观测网接驳盒技术[J]. 机械工程学报,2015,51(10):172-179. YANG Canjun,ZHANG Feng,CHEN Yanhu,et al. Technologies of junction box for seafloor observation network[J]. Journal of Mechanical Engineering,2015,51(10):172-179.
[10] 陈燕虎,杨灿军,李德骏,等. 海底观测网接驳盒电源散热机理研究[J]. 机械工程学报,2013,49(2):121-127. CHEN Yanhu,YANG Canjun,LI Dejun,et al. Research on heat dissipation mechanism of the power supply in seafloor observation network junction box[J]. Journal of Mechanical Engineering,2013,49(2):121-127.
[11] CHEN Yanhu,YANG Canjun,LI Dejun,et al. Study on 10 kVDCpowered junction box for a cabled ocean observatory system[J]. China Ocean Engineering,2013,27(2):265-275.
[12] LI Dejun,WANG Jun,FENG Jianshe,et al. Study and design of a heat dissipation system in a junction box for chinese experimental ocean observatory network[J]. Marine Technology Society Journal,2016,50(2):63-74.
[13] WANG Jun,LI Dejun,YANG Canjun,et al. Key technologies of junction boxes for Chinese experimental ocean observatory networks[C]//Oceans. Shanghai,China:MTS,2016:1-5.
[14] LU S. Infrastructure,operations,and circuits design of an undersea power system[D]. Washington,USA:University of Washington Electrical Engineering,2006.
[15] CLARK A M,KOCAK D M,MARTINDALE K,et al. Numerical modeling and Hardware-in-the-Loop simulation of undersea networks,ocean observatories and offshore communications backbones[C]//OCEANS. Biloxi,MS,USA:IEEE,2010:1-11.
[16] KIM J W,YOU J S,CHO B H. Modeling,control,and design of input-series-output-parallel-connected converter for high-speed-train power system[J]. IEEE Transactions on Industrial Electronics,2001,48(3):536-544.
[17] VORPERIAN V. Synthesis of medium voltage dc-to-dc converters from low-voltage,high-frequency PWM switching converters[J]. IEEE Transactions on Power Electronics,2007,22(5):1619-1635.
[18] 叶岚. 基于继电反馈的PID控制器的参数整定[D]. 上海:上海交通大学,2007. YE Lan. PID controller tuning based on relay-feedback test[D]. Shanghai:Shanghai Jiao Tong University.