© 2016 Mitsubishi Electric Corporation Introduction of MELCO`s MVDC Distribution Technology 1 JNEP-CV-0028 Ryosuke Ochi Smart Engineering Group, PDSC, Mitsubishi Electric Corp. confidential
© 2016 Mitsubishi Electric Corporation
Introduction of MELCO`s MVDC Distribution Technology
1JNEP-CV-0028
Ryosuke OchiSmart Engineering Group, PDSC,
Mitsubishi Electric Corp.
confidential
© 2016 Mitsubishi Electric Corporation
① Increasing awareness on environmental problems, resource & energy issues.・Reduction of green house gas emission, energy self-sustainment, optimum mix of power gen.
② Increasing awareness of BCP as counter-measure for disasters.・Disaster ready power substations, etc.
① Increasing DC converted appliances, LED lights through digitalization. ② Continuous development of DC distribution for residential and buildings.③ Increasing popularity of DC sources such as renewable energies
(solar, wind, fuel cell), batteries (include EV).④ Evolution of PV generation systems to higher voltage
(DC600V→1000V→1500V)
Social Trend
Market
Appliances Datacenter Electric Railway Transmission
MV/LV DC Distribution Background
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Main Benefits of DC Distribution・High overall efficiency (energy conservation).・Easy interconnection of different DC power sources such as
Solar, Wind, Fuel Cell, etc.・Simplicity in connection of Storage Batteries.・No reactive power to consider.・Fewer parts, smaller footprint, Simpler design and so cheaper
cost on the load side without the AC-DC adaptors.
Different Forms of DC LoadsAside from automobiles, airplanes, metro railways and mega DC transmission lines, Direct Current (DC) is also widely used incommunication and electronic devices as well as in household digital appliances.
航空機
100V
ICチップ
1000V
電子機器類
電気通信
データセンタ
自動車
電気鉄道・地下鉄
送電用途
500kV
宇宙応用
300V
MV/LV DC Distribution Background
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Data Centre
Railway, Metro
Substation
Airplane
Space
Vehicle
Phone
Laptop IC
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AC Distribution DC Distribution (48Vdc)
DC Distribution (380Vdc)
DC380V
No. of Conversion=4stages No. of Conversion=2 stages
Minimize Air-con by heat emission reduction.Improved System efficiency(Power conversion stages reduced)
Facility cost reduced(smaller size cable).Installation flexibility(Applicable to longer distance).
DC48V
Power Supply SystemFeatures & Advantages
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Demonstration facility of MVDC Distribution Constructed for the development of products and strengthening ofcompany’s engineering capabilities while leveraging on current MELCO’stechnologies, all for the purpose of promoting realization of a DC society.
MV/LV DC Distribution Introduction
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Building area Approx 191sq yd(Gross floor area : Approx 538sq yd)
Construction Steel construction / Three-storiesConstruction start September, 2015 Completion July 2016 Operation start August 2016
Devices
Communication devices,Solar power generation ,Wind power generation ,DC distribution board (DC380V),DC high speed CB (DC1500V)Batteries,DC load systems,Energy Management Systems (EMS)
System voltageDC 380V (First step : FY2016)DC1.500V (Second step : Underreview)
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Main Parts Explained
Grid
DC/DC
DC Load
SCADA EMS
PLC
DC24VLoad
DC/DC
DC48VLoad
DC/AC
AC100V/200VLoad
DC/DC
DC12VLoad
Migration Unit (DC/DC conv.)
AC/DC DC/DC DC/DC
LIBPV
Grid Conv.
① Grid Rectifier converts commercial power to DC and regulates DC bus voltage.② LiB Converter converts LiB DC voltage to bus voltage. Via EMS controls
charge/discharge.③ PV Converter connects power generated by PV to DC bus.④ SCADA & EMS for planning of charge/discharge LiBs base on generation & load
demand forecast.⑤ Migration Unit (DC/DC converter) converts voltage to each load requirement.
PV Conv. LiB Conv.
D-SMiree
AC
DC
DC Distribution Systems
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DC-EMS (Monitoring and Charge-Discharge System with PLC)
Function DescriptionSingle line diagram Monitor Displays measurement values, status and abnormalities in
each facility via the graphical simulation representations created in graphic maker application.
Status of Converters Displays status, measurement and modes of converters.Alarm and Measurement list Summary listing of previous alarms, start/stop operation
and status change event.Supply and demand management parameters Incorporation of battery charge/discharge control in
Energy Management System based on simple schedule.Set Operation Mode Switches operation mode
DC-EMS (PLC)
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2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
・・
Research & DevelopmentDC380V Product DevelopmentDC1500V Product Development
Market Release
DC Loads Market Release
Upstream System Development
ConsumerBusiness Development
DC Distribution Initiatives Plan
R&D(Green IT PJ)
Domestic Demo
OverseasDemo
Large Cap. System
(~700kW)
Small-Mid Cap. Sys.(3.5kW~)
▲For Data Centers
▲3.3kV SiC appliedMMC Type HVDCConverter Cell Tech. Verif.
▲DC High-Speed CB Development for Railways
▲D-Smiree BrandEstablishment
Universal Design Line-up expansion
DC1500VConnected System
Air-conVentilator
DC Loads Product Line-up expansion
△MELCO HVDC Demo. Bldg.Operation (target 2nd Half 2018)
▲Shirasagi Elec. New Bldg.
Development of higher voltage in the future.
Target acc. sales of $500M by 2020HVDC-Diamond
▲Application
▲DC Demo Facility
LEDLight
D-SMireeDiamond-Smart MVDC(※) Distribution NetworkSystem for Innovative, Reliable, Economical, Ecology※ MVDC: medium voltage direct current
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MV/ LV DC Distribution System Target Fields
HVDC
MVDC
LVDC
HVDC:high-voltage, direct current (送電)
MVDC:medium-voltage, direct current(配電)
LVDC:low-voltage, direct current(給電)
Offshore wind power:洋上風力発電
LVDC-house:宅内給電LVDC-Datacenter:DC-UPS
high-voltage, direct current:直流送電
D-SMiree for Community:街・地域
D-SMiree for Building(ZEB):ビル
D-SMiree for Station:駅D-SMiree for Factory:工場
D-SMiree for Datacenter:データセンター
Promotional Activity
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Mitsubishi Electric as a ZEB Planner1 completed the Japan’s first 380V DC Distribution ZEB project.Project SummaryProject Type: ZEB Ready Building (50 stuffs, 3-storey, total floor area 2,197sq.m)Completion Date: January 31, 2018DC Loads: 380V LED Light, 5V USB socket (for IP phone chargers, etc.)Project Location: Kumamoto City JapanEnergy Saving (Estimate): 51% (from MELCO DC Rectifiers, DB, air-con, ventilators/fan, LED light, elevator and other brand’s battery, sun powered water heater and geothermal energy, etc.)
19% (from MELCO solar PV-Battery (LiB) system)75% Total energy to be saved (against standard same sized building)
Others: Building Energy Management System (BEMS)Electric Vehicle (EV) power conditioner (charger/discharger)
Shirasagi Denki Kogyo New Main Office Building
Shirasagi Denki Kogyo Main BuildingRough illustration of installed equipment/ systems
1: Registration system by Japan’s Ministry of Trade and Commerce for ZEB promotion. MELCO is registered as ZEB Planner since May 2017.
VentilatorHi-efficiency Air-conMain heat exchangerLightsDC LED LightsLight w/sensor
(motion, brightness)
PV-Batt connection
PV
LiB
MELCO
DC Distribution System BEMS
EV PCS
Elevator
Glass WallTemp. insulation Multi-layer
Solar Water Heater
GeothermalHeater
Others
Scope
Supply Reference
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MELCO completed the our first 「e-F@ctory2 」.
Project SummaryProject Type: e-factory conceptCompletion Date: January, 2018DC Loads: 380Vdc LED Light, 24Vdc Large DisplayProject Location: Marugame City JapanOthers: Building Energy Management System (BEMS)
ioT, Industrial Robots and PV
Our New VST-VCB1 Factory
Supply Reference
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1: VCB: Vacuum Circuit Breaker VST: Vacuum Switch Tube 2: e-F@ctory concept : it is the concept creates “Smart Factories” through IoT-based big data utilization
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