Inrush Current Control Technology Boosts Power Converter Reliability

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[ 22 ] COTS Journal November 2011 Untitled-4 1 7/25/11 10:31:05 AM Special Feature Figure 2 Large-format Lithium-ion prismatic cells are proving themselves in interesting pilot programs as they offer up to 70 times the capacity of traditional packaged lithium batteries that are the size of a D cell. cost of lead-acid batteries has made them a popular choice for several years, many integrators are now turning to advanced chemistries such as Lithium-ion for more energy-dense applications. Figure 1 lists the many advantages Lithium-ion batteries have over lead-acid batteries. Finding the Right Fit Large-format cells, also referred to as HyperClass Lithium-ion prismatic cells, (Figure 1) on the market today are proving themselves in interesting pilot programs as they offer up to 70 times the capacity of traditional packaged lithium batteries that are the size of a D cell. While most lithium batteries are produced as small cylindrical cells up to 3 Ah or “pouch” prismatic cells up to 10 Ah, large-format cells can range from 50 Ah to 200 Ah. With each individual cell being considerably larger, large-format batteries greatly decrease the number of cells needed within the battery module, which improves reliability and efficiency while lowering maintenance costs and the number of connectors. Individual cell monitoring with the use of Battery Management Systems (BMS) is a key to success with these systems. Weight, temperature and energy requirements are all important factors to consider when choosing Lithium-ion batteries. Some have very wide temperature ranges and can be ideal for in-field vehicles that experience high desert temperatures and meet longer runtime demands, but not many have military testing certification, which is an important requirement. Lithium iron phosphate chemistry—a form of Lithium-ion—is by far the safest and therefore the best choice for power delivery applications. Energy Storage: The Silent Advantage The Tank Automotive Research, Development and Engineering Center (TARDEC), has developed a hybrid energy storage system suited for tanks and Stryker armored vehicles. This energy storage system has been implemented within the current Silent Watch program, aimed at allowing military vehicles to operate with little to no audible signature. Developing tanks and military Humvees more suited for covert missions is a major challenge, and energy storage plays a huge role in the development of this program. The Silent Watch vehicles rely on the battery system to operate quietly for stealth and tactical missions (Figure 2). With the communications systems being powered by the battery, the audible signature of these vehicles is greatly reduced
Copyright © 2011 Kontron AG. All rights reserved. Kontron and the Kontron logo and all other trademarks or registered trademarks are the property of their respective owners and are recognized. Rev. # D110eu01 » Who can solve my SWaP-C challenges? « Kontron’s expertise at the computing core, along with rugged system design, provides a complete solution to address the most complex space constraint, weight reduction, power consumption and thermal management hurdles. Size » Small Form Factor » Semi & full custom CONTACT US Weight » Fanless cooling options » Light Weight Materials CRITICAL QUESTIONS ... ANSWERED Reduced SWAP – High-performance Embedded Computer Cobalt » Small Form Factor » Intel® Core2 Duo or Atom processor » Custom I/O <strong>Power</strong> » Compact PSU solutions for MIL & avionics environments 3U VPX CPU board 2nd generation Intel® Core i7 processor VX3035 » Available in standard and rugged aircooled, or rugged conduction-cooled » Compliant to VITA46 (VPX), VITA65 (OpenVPX) and VITA48 (VPX REDI) Cooling » Expertise in heat dissipation and thermal management � 1-888-294-4558 � info@us.kontron.com � kontron.com/military One source to mitigate risk and reduce total cost of ownership High-performance COM Express® hardened for extreme environments ETXexpress®-PC-XT » Intel® Core2 Duo with Intel® GS45 and ICH9M SFF » Operation: -40°C to +85°C If it’s embedded, it’s Kontron.
Page 1 and 2: Volume 13 Number 11 November 2011 A
Page 3 and 4: 10 The Journal Journal of Military
Page 5 and 6: DEVELOPING GRAPHICS ON-TIME AND ON-
Page 7 and 8: the moment you deliver innovation A
Page 9 and 10: Calumet Wins SBIR Award from U.S. N
Page 11 and 12: Special Feature Power Supplies Meet
Page 13 and 14: Figure 4 For harsh rugged military
Page 16: Special Feature AC output to the lo
Page 19 and 20: MIL-STD is the only thing standard
Page 24 and 25: One Source For All COM Needs Effi c
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Page 30 and 31: Special Feature 0 0 Figure 2 cessiv
Page 32 and 33: Trust a world-wide expert for your
Page 34 and 35: loration our goal directly ge, the
Page 36 and 37: DEPLOYED WORLDWIDE RTD offers advan
Page 38 and 39: Tech Recon Self-forming Self-healin
Page 40 and 41: Tech Recon Figure 4 The 5940 Embedd
Page 42 and 43: Tech Recon ibility for future upgra
Page 44: Tech Recon Managing and Processing
Page 48 and 49: Tech Recon induced distortions can
Page 50 and 51: System Development JTRS and WIN-T P
Page 52 and 53: System Development Figure 3 The Sid
Page 54 and 55: Technology Focus ATCA Blades and Sy
Page 56 and 57: Technology Focus: ATCA Blades and S
Page 58 and 59: ATCA Blades and Systems Roundup ATC
Page 60 and 61: Products COTS Get Connected with co
Page 62 and 63: COTS Products Visualization System
Page 64 and 65: COTS Products 6U OpenVPX Blade Serv
Page 66 and 67: POWER YOUR LAPTOP & CHARGE YOUR BB-
Page 68 and 69: Index Advertisers Index Company Pag
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Inrush Current Control Technology Boosts Power Converter Reliability

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