Development of backup power systems at Wuhan Troowin Power System

Transcription

1 Development of backup power systems at Wuhan Troowin Power System Zhigang Qi Workshop on Fuel Cell Backup Power for Telecommunication Base Stations Wuhan University of Technology, Wuhan, China, May 29, 2015

2 Contents WuhanTroowinPower Air-cooledStacks BackupPowerSystems FieldTrials Challenges Summary 2

3 Wuhan Troowin Power System Establishedin2011withheadquarterslocatedin Wuhan FocusedontheR&DandmarketingofPEMFCand DMFCstacksandsystems Experiencedmanagementteamandworld-class technicalteam Establishedbroaddomesticandinternational collaborations Wellfinancedbyvisionaryinvestors 3

4 Technology Platform Liquid-cooled stacks Stationary power Large motive power Air-cooled stacks Backup power Small motive power DMFCs Portable power Small stationary power Hydrogen production Hydrogen station Special applications 4

5 Air-cooled Stacks Power(W)/ Length Width Height Weight MassPD Vol.PD Cell number (mm) (mm) (mm) (kg) (W/kg) (W/L) 50/ / / / Cell Performance 1.2 Cell Voltage (V) Ambient condition without humidification [email protected]/cm W/cm Current Density(A/cm 2 ) 5

6 Air-cooled Stacks Cell Voltage Stdev/mV Average Cell Voltage/V MEA-1_OCV MEA-2_OCV MEA-1_0.5A/cm2 MEA-2_0.5A/cm Running Time/h MEA-1_OCV MEA-2_OCV MEA-1_0.5A/cm2 MEA-2_0.5A/cm Running Time/h Operated24/7 automatically 97%H 2 utilization StackswithMEA1 14μV/hdecayrate in4500hat0.5 A/cm 2 OCVchangedlittle in4500h StackswithMEA2 28μV/hdecayrate in2800hat0.5 A/cm 2 OCValsoshowed apparentdecline Cellvoltagevariation behaveddifferently 6

7 Backup Power Systems Front View Back View 7

8 Backup Power Systems 8

9 Backup Power Systems 3kWsystemcontains3stackmodules Eachmoduleworksindependently,andhotswappable Modulardesignmakesthesystemscalable 45%systemefficiency Weightednoisevoltage0.72mV( 2mV) Peak-peaknoisevoltage52mV( 200mV) Standbypowerconsumption1.1% Outputvoltagestability±0.4% Remotemessaging,measurementand control 9

10 Backup Power Systems Remotecommunications Computer companyserver internet GPRS remotemonitoringmodule FCsystem Remotemeasurement Stackoutputvoltageandcurrent FCsystemoutputvoltageandcurrent Stacktemperatureandenvironmenttemperature H 2 pressure Remotemessaging Stacktemperaturehigh,environmenttemperaturehigh FCoutputvoltagehigh/low,outputcurrenthigh H 2 pressurehigh/low,h 2 leakage Fannormal/abnormal Gridpoweron/off StationDCbussvoltagehigh/low Remotecontrol Startup/shutdownFCsystem Messagetocell-phone FCsystemstate Problemcodes 10

11 Field Trials StartedonFeb.7,2015inSichuanprovince,experienced7-30 o C FCoutputconnectedtotheDCbussofthestation A100ADCcontactoraddedbetweenthestation sbatteryandthe station sdcbuss 6H 2 cylindersintwogroups FC H 2 11

12 Field Trials Date Startup Type Weather T ( o C) Startup time Shutdown time Duration (min) 2015/3/6 Poweroff Cloudy 13 8:25 11: /3/6 Remote Cloudy 13 16:30 16: /3/9 Remote Cloudy 18 16:36 16: /3/16 Poweroff Cloudy 16 9:59 10: /3/20 Remote Raining 16 11:15 11: /3/24 Poweroff Raining 17 9:35 10: /4/14 Poweroff Raining 21 10:23 11: /4/19 Poweroff Raining 22 03:00 04: /5/4 Poweroff Raining 15 18:07 18: /5/22 Poweroff Raining 19 01:10 17: CumulatedRunningTime

13 Field Trials Voltage/Current (V/A) D_OutputV D_OutputI D_Power Power (W) 10 FC output voltage set at 54.5 V Time (s)

14 Challenges Majorobstacles Misconceptions Usedtotraditionaltechnologies Lackofurgencyandresponsibility Higherinitialinvestment Shortvision Lackofhydrogeninfrastructure Whatshouldbedone Collaborativeeffortsbygovernments, companies,andthepublic Governmentreinforcement Governmentsubsidies 14

15 Summary TroowinPower sair-cooledstackshavehigherpower densitiesthanmanypeer sstacks Runningfor4500hhasbeenachievedinlab Backuppowersystemsadoptmodulardesigncomposed ofindependenthot-swappablestackmodules Onesystemperformswellinfieldtrials Systemoptimizationcontinues Marketingfuelcellbackuppowersystemsfacesbig challengesinchina,governmentsinvolvementiscrucial 15