ac Archives – The Green Optimistic green tech news, since 2008 Fri, 19 Apr 2013 15:58:23 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 Hitachi’s New, More Efficient DC Motor Control System Could Improve EVs https://www.greenoptimistic.com/hitachi-dc-motor-control-system-20130419/ https://www.greenoptimistic.com/hitachi-dc-motor-control-system-20130419/#respond Fri, 19 Apr 2013 15:58:19 +0000 https://www.greenoptimistic.com/?p=36450 For the most part, electric vehicles use an invertor to change the direct current coming from the battery pack to alternating current to power the electric motor. Direct current [DC] motors are more efficient than alternating current [AC] motors, but aren’t found very much in electric vehicle application because they waste energy starting up and […]

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