ac archives - planet forward - 克罗地亚vs加拿大让球 //www.getitdoneaz.com/tag/ac/ inspiring stories to 2022年卡塔尔世界杯官网 tue, 28 feb 2023 18:46:25 +0000 en-us hourly 1 https://wordpress.org/?v=6.6.2 thinkeco goes to college //www.getitdoneaz.com/story/thinkeco-goes-to-college/ wed, 19 sep 2012 15:30:02 +0000 http://dpetrov.2create.studio/planet/wordpress/thinkeco-goes-to-college/ college campuses are energy guzzlers. i know because i just graduated from indiana university. as an environmental enthusiast that is worried about the future of our planet, i don’t know of a quicker, cheaper or more convenient way to avoid wasted energy. thinkeco’s modlet was created by a small group of people that want to see the planet move forward. by making modlets plentiful on u.s. college campuses, it will be amazing to watch the savings soar – knowing it didn’t take millions of dollars or excessive retrofitting to bring about real, good change.

]]> high efficiency, low cost ac motors //www.getitdoneaz.com/story/high-efficiency-low-cost-ac-motors/ mon, 25 oct 2010 20:00:34 +0000 http://dpetrov.2create.studio/planet/wordpress/high-efficiency-low-cost-ac-motors/ motor technology has been around for 100 plus years and seems to be frozen in time! so now is the time to bring about some new technologies. ac motors use to be built utilizing copper bars and steel laminations in their rotors. this was very labor intensive, so the industry went to cast aluminum rotors to reduce the cost.

the copper rotors were more efficient, but couldnt be cast into the steel laminations. the steel laminations were used to reduce the eddy current losses…….so my idea is to replace the steel laminations with a special blend of powder metal pieces in both the stator and the rotor. powdered metal is about 1/4 the cost of laminations and can be cast with copper. it also is better at reducing eddy current losses. the result would be higher efficient/lower cost ac motors. i have used powder metal piecs with sucess in dc motors, ref: us patent #7,700,722

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