Transcript stelts_NEMA_LVDC_IEC2

The Necessity for LVDC Power
in Home Entertainment
Michael Stelts, IEC TC100
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Agenda
 Home entertainment runs on DC power
 IEC work on LVDC
 Panasonic’s perspective
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Multimedia Products Run on DC
External AC/DC converter
(AC adapters)
Internal AC/DC converter
Internal/External AC/DC
converter with Battery
DC Power for Products Saves Energy
Grid
Utility
ＡＣ１2０Ｖ
Distribution
Equipment
Equipment
ＡＣ
AC
wiring
Low ＤＣ
P.S.
３0％
Loss
ＤＣ
ＡＣ
DC
wiring
Utility
ＡＣ１2０Ｖ
Equipment
efficient
converter
8%
Loss
converter
Low
ＤＣ
2%
Loss
P
s
 AC adaptors for each product are eliminated
 Conversion loss is decreased by batch feeding DC power
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Small Efficiency Improvements Matter
115M
8hr/day
180W
US households
US household viewing
40” LCD
(Census Bureau estimate)
(OECD, 2005)
(Sony, 2011)
Roughly 166 GW·hr/day consumed by US TVs.
If DC distribution saves 8%, that’s 13 GW·hr/day.
Nearest power utility to meeting: Potomac River Station
Nameplate capacity = 514MW
Output/day = 12.3GW·hr/day
Energy savings > plant output
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Power Generation is Migrating to DC
 Renewable energy systems
 Solar power
 Fuel cells
 Reserve Power
 Home battery storage
 PEV storage
Household generation uses DC
Household products use DC
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DC Sources Create Greater Efficiency
Now: Many AC/DC converters
Energy Generators
AV Equipment
DC⇒AC
AC ⇒DC
DC ⇒AC
Battery
AC ⇒DC
AC ⇒DC
AC ⇒DC
AC ⇒DC
AC ⇒DC
Goal: Direct DC distribution
AV Equipment
Energy Generators
AC ⇒DC
Battery
DC
AC
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LVDC for Entertainment Systems
 Upper limit = 60V to eliminate shock hazard*
 Lower limit = 24V for SSL lighting**
 High voltage needed for longer wire runs
Example home entertainment system
42” LCD:188W
DVD:28W
(energy saving efficiency catalogue, METI, Japan)
-
1.6A @120VAC
4.5A @48VDC
9.0A @24VDC
43A @5VDC
*IEC 60065, **EMerge Alliance specification
48VDC is the Sweet Spot
 Avoids shock hazards
 Maximize length of wiring runs
 Easily create 2 x 24V busses
42” LCD:188W
DVD:28W
(energy saving efficiency catalogue, METI, Japan)
Home entertainment
running at 48V, 4.5A
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DC Distribution Infrastructure
PV
Battery
DC Distribution
with high-efficiency
AC/DC converter
AV equipment
Voltage：48V or less
DC Outlet
other
equipment
Voltage：300V-400V
White goods, etc.
More LVDC Benefits
 Opportunity for common worldwide standard
 Products can be smaller
 AC adaptors can be eliminated
 Improved safety – no shock hazard
 Smaller carbon footprint
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Home Entertainment Summary
 Home entertainment runs on DC power
 Standardization creates great benefits
 One plug worldwide
 One common input voltage
 Reduced shock hazard
 Small efficiency improvements are significant,
due to the number of entertainment products
 Efficiency significantly reduces carbon footprint
 Eliminates wall warts and the waste they create
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IEC Work on LVDC
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IEC TC100 – Scope and Standards
Audio, video and multimedia systems and equipment
IEC 62360 (ISDB)
IEC 62216 (DVB)
IEC 62002 (DVB-H)
IEC 60728 series
(Cable system)
IEC 61016 (D1)
IEC 61189 (D2)
IEC 62071 (D7)
IEC 62141 (D16)
IEC 62289 (D10)
Professional
IEC 62336 (D11)
IEC 60107 series
IEC 62330 (HD-D5)
(TV)
IEC 60268-5
IEC 62447 (D12)
IEC 62261 (TV Metadata) (Loudspeaker)
IEC 60315 series
IEC 61883
(Radio)
IEC 62229
(Digital AV I/F)
IEC 62448
Consumer
(e-Book)
IEC 61606 series
IEC 60908 (CD)
(Audio measurement)
IEC 61606-4
IEC 62389
IEC 61966 series
IEC 61909 (MD)
(PC audio) (Color
(DVD player
management)
IEC 60958, 61937
measurement)
IEC
62318,
62328
(Digital Audio I/F)
(Multimedia
IEC 61834 series Home server) IEC 61603 (IR)
IEC 60268 series
(DV format)
IEC 62227
(Audio System)
(DRM)
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LVDC System (in the IEC System)
AV equipment(TC100)
Wiring (TC23)
Battery
(TC21)
LVDC
Appliances (TC59)
Lighting (TC34)
(SG4)
EV (TC69)
Fuel Cells
(TC105)
PV (TC82)
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IEC Addressing LVDC Today
 SG4 is responsible for LVDC strategy
 TC100 is responsible for LVDC in multimedia equipment
Standardization
Management Board
Technical
Committees
Strategy
Groups
TC100
AV & multimedia
TC69
Electrical Installation
SG4
LVDC
TC59
white goods
TC23
Electrical accessories
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Collaboration between TC100 & TC59
IEC TC100 Task Group (TG) for SG4
+ TC59 Ad hoc group (AHG) for SG4
= Collaboration on contributions to SG4
SMB
TC
SG
TC100
(AV equipment)
SG1
SG2
TG for SG4
Collaboration
TC59
(White Goods)
SG3
Contribute
to SG4
SG4 (LVDC)
SG5
AHG for SG4
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AC Adapter Standardization in IEC TC100
PT 62700 is developing an LVDC power supply standard
 Scope
 Unify AC/DC adapter for Laptop PC by defining DC voltage and
its connector shape.
 Benefits
 Fewer AC adaptors is good for the environment
 Reduce product cost by reusing adapters
 Simplifies sales and inventory
 PT 62700 is important work; but, it also demonstrates a
need for the long-term solution – LVDC
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Difficulties in Standardizing AC Adaptors
 AC adaptors are designed for specific products,
creating an extra layer of complexity
 Matching in-rush current of product to adaptor
 IEC 60950-1 may be insufficient for leakage current
 AC adapter temperature
 EMC fluctuations as load changes
 Harmonizing safety standards
 Some manufacturers used the same AC adaptor on
products for years, slightly reducing the benefit
 By standardizing LVDC, everyone can design
their products to one common power source
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IEC is an Ideal LVDC Standards Venue
 Experts in every area (Technical Committees)
 Opportunity for a common worldwide standard
 Common safety practices
 Fewer connectors
 Fewer voltages
 One frequency
Country
Domestic Voltage
ＵＳＡ
Ｊａｐａｎ
１００Ｖ
Domestic Frequency
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Domestic Current
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60
Ｃｈｉｎａ
Ｆｒａｎｃｅ
１２０Ｖ
２２０Ｖ
２３０Ｖ
６０
５０
５０
10
16
１６
Ｇｅｒｍａｎｙ
Ｉｔａｌｙ
ＵＫ
１３
Domestic AC socket
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LVDC Perspective
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Panasonic Corporation in brief
 Net Sales: $100B (approx.)
 Business Segments
 Digital AV & Networks
 Home Appliance
 Components and Devices
 Panasonic Electric Works (PEW)
 PanaHome
 SANYO
LVDC is for more than TVs
AC infrastructure
Grid
Heater
AC
Cooker
Solar System
Distributor
Electric Works
Fan
ＬＥＤ
PC
TV
Electric Works
Electric Works
BD
Wire
TEL
Fuel cell System
Battery
Electric Works
Air Conditioner
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Refrigerator
UC San Diego
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Kasai Green Energy Park
Green Energy Park LVDC Project
DC power distribution directly from PV to PC and LED
Proving test in Kasai, West Japan
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Eco ideas House, Tokyo
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Eco Ideas House LVDC Project
AC/DC hybrid
wiring system
Reducing losses cause
by
AC/DC conversions
eco ideas HOUSE in Tokyo
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Panasonic Approach to LVDC
 LVDC is not just for home entertainment…
it is needed throughout the home.
 Panasonic is considering
LVDC for all these businesses:
 AV equipment
 Home appliance
 Lighting
 PV
 Battery
 Electrical distribution and wiring
 Home construction
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End
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