DC Distribution: The Power To Change Buildings

Date: 
July 14, 2011 - 12:00pm
Location: 
90-3122
Seminar Host/Point of Contact: 

This seminar presents an overview of the effort to create new applications standards to drive the distribution and use of native direct current (dc) in net zero energy commercial and residential buildings. From the early days of electric power generation, distribution and use there’s been a debate over which form of power, AC or DC, is best. Edison set the stage for this argument in the late 1800’s with his invention of DC powered lighting systems. Tesla's system of AC dynamos, transformers and motors all but stopped the growing use of DC by the turn of the century. With the notable exception of electrified transportation, and low power systems like telephones or Ethernet devices, AC took over the world of electrical power by the mid 1900’s. But, we are now deep into a new era that will see natively DC electronic equipment, alternate energy generation, electrical storage and chargeable electric vehicles push the power meter strongly back toward DC again. As such, an alarming share of the AC power distributed in buildings has or will be wastefully converted one or more times between AC and DC before it is used. This presentation will look at the alternative of using (and keeping) DC power in its native form from generation, to distribution, to end use. Discussed will be the motivation and need for new power application standards and the further need and development of an eco-system to support those standards. Also covered will be some practical transformational pathways from our legacy platforms to newer, more reliable, more versatile, safer and more sustainable hybrid AC/DC ones.

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Site Access

For site access please email your request to ETA Seminars. To arrive at Building 90 via the LBNL shuttle, take "Blue Uphill". Click here for the shuttle schedule. To ensure your site access is set-up send your request 36 hours in advance of the seminar.

Remote Access

Not able to attend in person? Remote participants can use ReadyTalk Audio & Net conference to phone in to listen, while viewing the presentation via the ReadyTalk site.

Web Access Code: 4864835

USA & Canada call-in number:
1 (866) 740-1260
Access Code: 4864835#

International callers:
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If not, you will need to pay for the call yourself and use this phone number:

(303) 248-0285.