Search found 265 matches

by HeadsUp
Thu, 24 Dec 2009, 00:03
Forum: Electric motors and controllers
Topic: Litz wire
Replies: 4
Views: 1877

Litz wire

thankyou kindly Semikron below are supposed to be a supplier for PACK products below ( German company ) but didnt get a reply yet Pack Litz wire products You guys might like to take a browse through SEMIKRON website here , we are seeing a whole lot of new products coming through to the market for E...
by HeadsUp
Wed, 23 Dec 2009, 23:28
Forum: Electric motors and controllers
Topic: Litz wire
Replies: 4
Views: 1877

Litz wire


anyone know good suppliers for Litz wire products ?

bit thin on the ground in this country





by HeadsUp
Mon, 21 Dec 2009, 22:36
Forum: Members Machines
Topic: Homemade 2kW brushless trike "now with fairing"
Replies: 16
Views: 12588

Homemade 2kW brushless trike "now with fairing"

grub wrote: That is just fantastic. Do you have a site or place where you explain how you rewired the f&p and controllers, etc. A friend and I considered what you had done, but the only information we could find was that it would not work and wasn't worth the effort.



F & P rewiring
by HeadsUp
Sat, 19 Dec 2009, 02:35
Forum: For Sale/Wanted
Topic: 440 UMOC and AC55 Motors 2nd hand
Replies: 14
Views: 1024

440 UMOC and AC55 Motors 2nd hand

$ 700 bux in port charges is a bit rude do they spray it with gold plate on its way through ? i have purchased plenty of stuff from the US ( under $ 1000 each ) , but no charges by australia post hope they can send by UPS if its a 16 kg controller and bypass the customs gold plating department.
by HeadsUp
Sat, 19 Dec 2009, 00:53
Forum: For Sale/Wanted
Topic: 440 UMOC and AC55 Motors 2nd hand
Replies: 14
Views: 1024

440 UMOC and AC55 Motors 2nd hand


do you still pay import duty if the box is marked warranty exchange ?

warranty exchange means should be no duty surely ?

( coz on account of mine done got broken yiknow )

i am tempted to take wun carntroller
by HeadsUp
Tue, 15 Dec 2009, 20:30
Forum: Technical and conversion discussion
Topic: any transformer experts here ?
Replies: 10
Views: 1750

any transformer experts here ?

Might I ask what you want to do with it? At 45kg I doubt you'll be putting it in an eV for charging... i have a constantly open mind always looking for ways to use what i find around me. its worth $ 65 in scrap value , so thats what i paid for it , hoping that might obligate the risk of me not find...
by HeadsUp
Sun, 13 Dec 2009, 23:41
Forum: Technical and conversion discussion
Topic: any transformer experts here ?
Replies: 10
Views: 1750

any transformer experts here ?

Did I see reference to 400Hz ? That puts the power rating up by a factor of 8 ! HeadsUp... email supplier time. http://forums.aeva.asn.au/smileys/smiley1.gif thankyou peepil yes 400 Hz so possibly airforce equipment for its light weight , will let people know if i get a reply on specs from the USA ...
by HeadsUp
Sun, 13 Dec 2009, 03:47
Forum: Technical and conversion discussion
Topic: any transformer experts here ?
Replies: 10
Views: 1750

any transformer experts here ?

only found this from googlisation

web page without much info :(
by HeadsUp
Sun, 13 Dec 2009, 03:39
Forum: Technical and conversion discussion
Topic: any transformer experts here ?
Replies: 10
Views: 1750

any transformer experts here ?

anyone got opinions what this might be ? it has no markings for input or output voltage looks like 2 mm and 3.5 mm thick copper strip windings , the 3.5 mm thick winding has 3 taps , the other thinner one has 2 taps probably ex navy 45 kg all up , measures about 28 cm long x 15 cm wide how can i tes...
by HeadsUp
Sun, 06 Dec 2009, 20:28
Forum: Electric motors and controllers
Topic: AC-144-50 Electric propulsion system
Replies: 19
Views: 3140

AC-144-50 Electric propulsion system


little bit off topic , but these solar inverters have a very broad DC input range   ( 180 - 950 VDC ) , and 415 VAC 3 phase

not suitable for us at only 10 kW , but it would be nice to know what sort of construction they use


solar fabrik inverters

by HeadsUp
Tue, 01 Dec 2009, 07:07
Forum: Electric motors and controllers
Topic: measuring magnetic field strength
Replies: 12
Views: 1820

measuring magnetic field strength



towards the end if this video he shows a sheet film " magnetic field viewer "

bloomin amazink

magnetic field viewer

by HeadsUp
Tue, 01 Dec 2009, 02:19
Forum: Electric motors and controllers
Topic: measuring magnetic field strength
Replies: 12
Views: 1820

measuring magnetic field strength

Salty9 wrote: I found this on the RC forum.

DIY Gauss Meter


thanks Salty Very good
by HeadsUp
Thu, 26 Nov 2009, 20:21
Forum: Electric motors and controllers
Topic: measuring magnetic field strength
Replies: 12
Views: 1820

measuring magnetic field strength

now a USB scope might be handy i was going to keep the FP motor for a particular application i have in mind..... how much is it worth to you ? edited . i have the controller that goes with it too , dunno if that part works but some people hack them and convert to a variable speed drive there is a un...
by HeadsUp
Thu, 26 Nov 2009, 18:49
Forum: Electric motors and controllers
Topic: measuring magnetic field strength
Replies: 12
Views: 1820

measuring magnetic field strength

If you are using a single sensor (or 2) then the sound card I/P could be made to work - then use Audacity to record. You would have to take DC or AC coupled input of sound card into account. haha brilliant might need a pot to adjust levels if the soundcard driver doesnt have enough range ? i have p...
by HeadsUp
Thu, 26 Nov 2009, 18:36
Forum: Electric motors and controllers
Topic: measuring magnetic field strength
Replies: 12
Views: 1820

measuring magnetic field strength

thanks being a flat coil i could mount it to a flat surface , and then mount the hall sensors to a sliding rail that i can run past the coil when its at set voltage ? i would need a consistant gap between sensor and coil , and consistant voltage i dont own an oscilloscope though. but an interface o...
by HeadsUp
Thu, 26 Nov 2009, 16:28
Forum: Electric motors and controllers
Topic: measuring magnetic field strength
Replies: 12
Views: 1820

measuring magnetic field strength

ello peeps can anyone enlighten me on the methods used to measure and convert to a visual map , the magnetic field / flux density produced by various different experimental stator designs ? i think Tritium-James mentioned a software package that does it for the never to be repeated bargain price of...
by HeadsUp
Wed, 25 Nov 2009, 06:02
Forum: Electric motors and controllers
Topic: big batteries and step up DC converters
Replies: 69
Views: 17589

big batteries and step up DC converters

thanks weber

what kind of values would the components need to be ?

at least i can get a rough idea of parts costs for something like that

will let you know when i find a prius one to strip down
by HeadsUp
Tue, 24 Nov 2009, 16:43
Forum: Electric motors and controllers
Topic: water cooled floating controller
Replies: 1
Views: 673

water cooled floating controller

if anybody is building or incorporating a water cooled controller into their system , just wanted to point out that the pump for the water cooling block and the radiator should perhaps also be insulated from chassis. the cooling block / IGBT modules are insulated from the controller case all the wa...
by HeadsUp
Tue, 24 Nov 2009, 15:39
Forum: Electric motors and controllers
Topic: big batteries and step up DC converters
Replies: 69
Views: 17589

big batteries and step up DC converters

dang looks like the 2004 Prius DC-DC converter is only 20 kW Oh, right. The MG2 motor is 50 kW (60 kW in the 2010), but a lot of the time, most of that power comes from MG1 (driven by the ICE). In fact, I think you need almost the full 20 kW from the battery, plus 35 kW (maybe plus a little) from M...
by HeadsUp
Tue, 24 Nov 2009, 04:26
Forum: Electric motors and controllers
Topic: big batteries and step up DC converters
Replies: 69
Views: 17589

big batteries and step up DC converters


dang

looks like the 2004 Prius DC-DC converter is only 20 kW

the Lexus LS600 has a 37.5 kW DC-DC step up converter . problem is they are as rare as rocking horse ships


( bottom of page )

Prius power specs
by HeadsUp
Tue, 24 Nov 2009, 01:52
Forum: Electric motors and controllers
Topic: big batteries and step up DC converters
Replies: 69
Views: 17589

big batteries and step up DC converters

Also the cost to build such a DC-DC would be more than the cost of the BMS to monitor lots of cell to equal the high voltage. at a guess a Prius Dc-DC converter would be around $ 200 at a wreckers woodentit ? I have not got a reply on prices yet , but i think the Prius battery packs would be in hig...
by HeadsUp
Mon, 23 Nov 2009, 23:24
Forum: Electric motors and controllers
Topic: big batteries and step up DC converters
Replies: 69
Views: 17589

big batteries and step up DC converters

2 inch diameter battery cables would be a beech to bend on them tight corners gungadin. i think anything below 64 volt system would be creating dumbness>squared above 64 volt and the sweet spot could be narrowed down to optimise weight , overall cost , power density , power density/price with effici...
by HeadsUp
Mon, 23 Nov 2009, 01:43
Forum: Electric motors and controllers
Topic: big batteries and step up DC converters
Replies: 69
Views: 17589

big batteries and step up DC converters

Is it possible to make a VFD controller from scratch that would take 64 volts and invert to 0 - 200 Hz / 400 VAC ? ? ? So I'd say that this idea is dead. It's probably better, as Toyota decided, to go with a bidirectional boost converter optimised for efficiency than to attempt this topology. thank...
by HeadsUp
Sun, 22 Nov 2009, 23:17
Forum: Electric motors and controllers
Topic: big batteries and step up DC converters
Replies: 69
Views: 17589

big batteries and step up DC converters

a bidirectional DC-DC converter just uses a transistor instead of a diode, so that part is easy. Obviously running a normal VFD from the DC-DC converter is the easiest method, but you could just do a custom low voltage controller and use a low voltage motor (or rewind). a step-up DC-DC converter is...