Search found 2 matches

by evsports
Tue, 01 Dec 2009, 23:03
Forum: General EV Discussion
Topic: Australian Design Rules for Electric Vehicles
Replies: 8
Views: 1425

Australian Design Rules for Electric Vehicles

Be aware that batteries, particularly due to their weight/density, can be deadly in an accident. They must be suitably constrained according to ADRs even as simple loads. They must be restrained with sufficent hold down bolts and frames to withstand a 20G decelleration (Crash). (and that's in any di...
by evsports
Tue, 01 Dec 2009, 22:31
Forum: AEVA QLD Branch
Topic: Electric Motors
Replies: 6
Views: 2996

Electric Motors

DC motors are cheaper and simpler but suffer from brush wear and losses. ac motors should be three phase to take full advantage of their efficiency. (More than three phases add efficiency but at greater weight and cost which outweighs the added efficiency. 3ph = 96%, 4ph ~98%) Switchmode controllers...