V2G was done by others as well. My daily driver for 3 years (2005-2008) was a US Electricar truck that was re-converted in 1995 (original conversion by USE in 1994) to receive a “WaveDriver” inverter as well as a large 3-phase inductor and a modified AVCON charging plug to allow connection to a 3-phase 208V utility grid for bi-directional power transfer at up to 80 Amps (~30kW of charging/discharging power). WaveDriver (the company) apparently was notorious for blowing up batteries, I heard a rumor that they managed to set a lead-acid pack on fire by (too) Fast-Charging it. Note the year: 1995 was long before anyone thought about V2G, yet that was the year this (operational) truck was commissioned to PG&E together with a stationary battery pack and bi-directional inverter to have 2 test beds. I saw the commissioning papers from that year. I later sold this truck, last I heard it is available for sale at the East Coast. Cor.
Sent from Mail for Windows 10 From: Lee Hart via EV Sent: Monday, July 22, 2019 8:12 AM To: Electric Vehicle Discussion List Cc: Lee Hart Subject: Re: [EVDL] EVLN: Before Tesla was the tzero> an Alpha EV (v) paul dove via EV wrote: > I don’t know what that means I assume that is a company’s name, > however, what I said was correct. Alan designed the inverter and > electronics for the EV1. Paul is right. It went like this: Aerovironment built GM's 1987 "SunRaycer" solar powered race car. It so impressed GM that they contracted with AeroVironment to build a prototype electric car. That car was named the "Impact", and delivered to GM in 1990. Alan Cocconi worked for AeroVironment, and designed the Impact's inverter. It was air-cooled and used MOSFET transistors. GM completely re-designed the Impact into the EV1. The first EV1's became available in 1996. They contracted out the inverter design to Hughes Aircraft, who re-designed it to be liquid-cooled and use IGBTs (among many other changes). Cocconi's inspiration was there; but GM completely designed out any trace of his work. Cocconi went on to design the Tzero EV. I think it was the first successful EV to use thousands of 18650 lithium cells for power, and was the inspiration for Tesla's Roadster. Cocconi also V2G (Vehicle to Grid) where an EV can feed power back into the grid, and "reductive" charging, where the EV's motor is used as a transformer during charging. -- In software development, there are two kinds of error: Conceptual errors, implementation errors, and off-by-one errors. (anonymous) -- Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20190722/f167dbe0/attachment.html> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
