Electric Starion EV - Electric Car Conversion - Part 7
Getting seasonal obligations out of the way, this video should be near the last we're doing as the car approaches completion. There's a brakes and air-con/pwr steering test, Nathan talks about water boilers used to cool engine bays in cold climate countries that could be used for cabin heating in an EV, I talk a bit about IGBTs and Nathan does a tacho send test using an IGBT. Sooner or later there may be motor speed controllers custom designed for EVs that use IGBTs. These things have freewheeling diodes, and from my limited understanding that means they're there to stop reverse current voltage spikes across the inductive load. When the current flow to an inductor is suddenly interrupted, the inductor attempts to maintain the current by reversing polarity and ramping up the voltage to maintain the flyback. Without the diode the voltage can go high enough to damage the IGBT. The diode allows the reverse current to flow through it and dissipate. IGBTs could be cool things to use for 'electric Boost' -just like a turbo Boost. From the video you can also see the BMS installed - these will be sprayed with conformal coating for protection. Most of the scenes in all the videos have been shot on a Nokia N93 which has been very handy. Thanks to Nathan, Linda and Christina for the filming. And sorry about the seasonal sillyness.
Electric Car Conversion Rover Part 9
Starting work on a pattern for the Adaptor Plate.
Electric Starion EV - Electric Car Conversion - Part 3
Welcome to the third installment. It's taken a bit of preparation time, which is essential rather than diving in to find something we've done is not quite right - both Nathan and I have been guilty in the past of making stuff only to discover a better way of doing it. But parts availability has been the biggest issue; delivery time has been long delayed for many reasons too complicated to discuss here. In this video we re-assess engine bay mounting; most of the battery racks are welded up now and the battery management has arrived (except the master unit, d'oh!). We discuss battery management, the most efficient use of space in the engine bay, as well as the AC motor we received that will drive the air-con/power steering. (btw, the AC motor and BMS come from www.bev.com.au where they are custom-made). Also an older previously unused segment stripped in about removing weight, as this is crucial in gaining mileage. Oh, and a mention of power cabling which we will try to get through some of the sub-frame rather than running under the vehicle or lumping under the carpet (as the power cable sits inside a plastic flex conduit roughly an inch diameter), so long as it's legal which we'll check with someone who knows (guessing it's something like 600mm distance between u-clamp affixing). The Zivan will sit in trunk/hatch area to the left near the charging 'fuel' port; not sure about tire placement yet, but it looks like we'll keep our back seat which is good thing (and did you know that there is an under-seat sub-frame area roughly two inches high? Hmmm... possibilities....). As for the battery tank at rear, we're looking at ducting hot air from it using PC fans and 'Exhaust' steel piping. It'd be nice to get them through the side vent follies on the pillars, but this would mean a lot of work (they'd probably be part-exposed in the interior, angled down rather like roll-cage bars). Overall I would have loved to have progressed a bit more than we have but there have been circumstances beyond our control and parts supplies have been an issue all the way along - which in a sense is a good thing so we don't rush too-obvious solutions that would otherwise cost in time/energy to undo (in a circumlocutory sort-of way ;-) ). I'd like to thank Christina for her camera work during the making of these videos, shot on a two-year old Nokia N93 still going strong, as well as Linda for filming the air-con motor, without them I'd be stuffed for making videos about this car.
Conversión a Auto Eléctrico E-Voltion, Tecnosustentabilidad Accesible - México
E-voltion , Tecnosustentabilidad Accesible. - Mexico Email: firstname.lastname@example.org , FB: https://www.facebook.com/evoltionmx, FB Fanpage: https://www.facebook.com/evoltion.mexico/, Grupo FB: https://www.facebook.com/groups/evoltion/ WEB: http://www.e-voltion.mx/ Contacto: 55 66 11 04 78, 41 73 51 28.