units that can power servomotors and other actuators in industrial control equipment, operating in harsh environments and over a wide temperature range. As discussed above, the advantages of supercapacitors are in energy


storage and battery replacement applications where the characteristics of long-life, reliability, low-maintenance, extended-temperature operation, low environmental impact and simple charging circuits are particularly relevant. These include smart meters, energy harvesting, renewable energy systems and a range of backup power solutions. Additionally, the superior charge/discharge characteristic provides surge capacity in industrial motor start applications, such as elevators and forklifts, and energy regeneration in electric vehicles e.g. the kinetic energy recovery systems (KERS) popularised by F1 racing.


supercapaciTors from leading manufacTurers Panasonic is a pioneer and market leader in this industry with over 30 years experience in producing EDLC devices. Its Gold Cap range is promoted as the ideal green replacement for secondary batteries in systems that require a backup power source. The latest high reliability RF and RG series offer capacitances from 0.1F to 1F at rated voltages of 3.6V and 5.5V and are specified for operation over a temperature range of -25oC to +85oC with an endurance of 2000 hours at 85oC. Smart metering is just one of the many target applications for these stacked coin type devices. Murata targets its high-reliability DMG series supercapacitors at


energy storage applications requiring extended temperature and long-life operation as well as environmentally-conscious markets where the green credentials of EDLC devices, which contain no lead or other hazardous substances, are key. Measuring just 20.5 x 18.5 x 1.4mm and with capacitance values of 350mF and 700mF, the DMG series provides a very compact, space-saving solution for energy harvesting and battery load assist applications in portable electronic equipment. Nichicon Corporation focuses on industrial backup power with its UK


series of EDLC devices. These have been developed for use in applications such as smart metering that require low resistance in order to deliver near instantaneous power when conducting wireless transmission. Reliable, long-life operation outdoors at low temperature, down to -40oC are other key characteristics. More significantly, the use of a propylene carbonate- based electrolyte ensures the lowest possible resistance while also providing a safer product with lower environmental impact. Cooper Bussmann is targeting renewable energy applications


with its high capacitance PowerStor® XB and XV series of cylindrical supercapacitors. With capacities of 300F and 400F, these devices are aimed at power hold up and pulse power applications in alternative energy markets e.g. for heliostat tracking in solar energy arrays and for controlling the blade pitch of wind turbines. These extremely high capacity devices provide reliable operation in harsh industrial or outdoor environments and achieve a service life of over 20 years in end- equipment without the need for replacement or maintenance. AVX has developed its BestCap series of electrochemical


supercapacitors to combine very high capacitance with ultra low equivalent series resistance (ESR), in the region of milliohms, to offer excellent high power pulse performance. These devices are intended


to help boost instantaneous power availability in applications that need to respond quickly to high current demands and are often used in conjunction with battery packs to provide a hybrid power source. Supercapacitors provide equipment designers with a flexible


alternative to conventional capacitors or rechargeable batteries for energy storage, both as a backup power solution and for applications that have to cope with demand surges. The technology’s maintenance- free, long-life and environmentally friendly credentials make supercapacitors a natural choice for green energy solutions.


Latest power supplies: go configurable, not custom!


Emerson Network Power’s µMP (MicroMP) Series configurable ac-dc power supplies rival the cost of non-configurable power supplies, while providing market-leading density, efficiency, reliability and agency approvals. Their flexibility can eliminate the need for a custom solution in many scenarios. Two models are currently available: the µMP4 provides up to 8


isolated outputs and can deliver up to 600W of output power; while the µMP1 provides up to 12 isolated outputs and can deliver up to 1200W of output power. Users can mix-and-match modules with outputs ranging from 0.9V to 60V. By using parallel and series combinations, nearly limitless customized output power configurations become standard “off the shelf”.


universal applicaTion accepTance


Full EN60950 Industrial & EN60601 3rd edition medical safety approvals and optional Conformal Coating make the µMP Series ideal for medical, industrial, process automation, robotics and telecommunications OEMs. For more information contact avnet-abacus.eu/emerson


Figure 4: PowerStor® XB and XV


series of cylindrical supercapacitors from Cooper Bussmann


7


focus magazine - issue 16


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