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lrk-torquemax · building high-torque brushless e-motors
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Messages 12250 - 12279 of 12472   Oldest  |  < Older  |  Newer >  |  Newest
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12250
Dear Ron, that looks good. A large number of poles / magnets to obtain a low speed motor. My biggest problem is how to get the stator plates. 24 / 65 mm is...
janb2000nl
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Jul 1, 2009
9:01 am
12251
Jan, batt-mann.de has 65mm/24N /Kenny...
Kenny Valdemarsson
kenta16807
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Jul 1, 2009
9:40 am
12252
In all the literature I've read most AC motors are designed to operate at up to 400hz. At 400 Hz they use special steels and higher still 1500+ move to other...
Joe
ecbjoe
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Jul 1, 2009
2:07 pm
12253
Are you sure you're not confusing 'drive' frequency with PWM frequency ? Standard AC motors(syncronous) and BLDC are quite different beasts... /Kenny...
Kenny Valdemarsson
kenta16807
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Jul 1, 2009
2:21 pm
12254
Hi Kenny, Thanks, but no I don't mean on the drive side. I'm just talking about the frequency in Hz created by the PM motor or generatior and what has been...
Joe
ecbjoe
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Jul 1, 2009
3:01 pm
12255
Hi, Joe. Any bad effects are all due to hysteresis, as far as I know. Thinner laminations and higher resistivity materials (metallic glasses, for instance, ...
Donald H Locker
dhlocker
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Jul 2, 2009
2:10 am
12256
That is because 400 Hz is the highest powerline grid frequency used. That is the simple explanation. Some people will say, they only know of 50 or 60 Hz grids,...
Poul Børge Pedersen
pbp_et
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Jul 2, 2009
11:34 am
12257
Thank you Gentleman, for settling what seemed to be a contradiction. Regards, Joe...
Joe
ecbjoe
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Jul 2, 2009
1:15 pm
12258
They use 400 hertz in alot of surplus military applications such as radar drive motors and other drives .All there generators are 400 hertz. Carl ... From: Joe...
carl
cannibalcarls
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Jul 2, 2009
6:07 pm
12259
Dear,   I thank lrk-torquemax@yahoogroups.com add me.   I am Brazilian descendant of Italian, a specialist in the design of mechanisms and this year I am...
plpastore
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Jul 3, 2009
10:54 pm
12260
I going to make a exterior rotor brushless DC motor, with 16 poles and 36 slots, airgap 0,6422 mm, diameter outside stator of 172 mm and diameter inner rotor...
plpastore
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Jul 3, 2009
10:54 pm
12261
Goedendag, There are several ways to suspend and resume e-mail reception from this group. 1- via e-mail Suspend: Send empty message, no subject to: ...
Ron van Sommeren
ron_van_somm...
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Jul 5, 2009
3:51 pm
12262
... That would resume e-mail reception in non-digest format. To resume in original format, send a message to lrk-torquemax-mail@yahoogroups.com Vriendelijke...
Ron van Sommeren
ron_van_somm...
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Jul 5, 2009
3:56 pm
12263
Vielen dank     Paulo Luporini Pastore   ... De: Ron van Sommeren <ron.van.sommeren@...> Assunto: [lrk] m: suspending message reception during holiday...
plpastore
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Jul 5, 2009
10:05 pm
12264
Hi Herbert, (I will try here on the group :-) I need to make a decision for ordering some Litze wires. Their standard Litze (1 strand) are : 0,02; 0,022;...
manulrk
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Jul 7, 2009
8:57 pm
12265
... For a 20 Watt motor, that is way too large. you could probably do with 12slots, 36mm diameter 1mm deep magnets. -ryan...
ryanbiffard
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Jul 17, 2009
5:43 pm
12266
OK, but I am new in project of electric brushless.   How many watts for my brushless DC motors with 12 poles and 36 slots? And, tickness of magnet to width...
plpastore
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Jul 17, 2009
9:43 pm
12267
The number of poles and slots doesn't really effect the power of the motor. Typically the volume of the motor and the speed defines how much power it would...
ryanbiffard
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Jul 19, 2009
11:07 pm
12268
Dear Ryan,   ok, I'm a Brazilian government agency in providing services, so cost is no problem. What I do not understand is that for 36 slots and 16 imams,...
plpastore
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Jul 19, 2009
11:23 pm
12269
... It is common to have 3 slots for each magnet Pole, but it doesn't necessarily mean less cogging torque. ... I don't quite understand everything you stated....
ryanbiffard
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Jul 26, 2009
5:12 am
12270
Ok   I don´t have a drawing    ... De: ryanbiffard <ryanbiffard@...> Assunto: [lrk] Re: Exterior Rotor Brushless DC motor project - Return Para:...
plpastore
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Jul 28, 2009
3:11 pm
12271
I would like to understand the following:  (to exterior rotor, 3-phase) a brushless motor with 12 slots, 8 magnets, would be the fractional calculus that...
plpastore
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Jul 28, 2009
6:05 pm
12272
There are a few sources out there to help figure out winding patterns for different poles and slots. here is a simple calculator ...
ryanbiffard
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Aug 1, 2009
7:49 pm
12273
I have about 2000 N45H (120 Celcius) Epoxy coated 10x5x2.5mm magnets magnetized through thickness (2.5mm). I was wondering if anyone was interested in buying...
ryanbiffard
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Aug 1, 2009
8:10 pm
12274
Ok But, I don´t understand with are make this:   Notes regarding the notation used: Uppercase (A, B or C) = clock-wise winding (CW) Lowercase (a, b or c) =...
plpastore
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Aug 1, 2009
10:27 pm
12275
Dear, Ryan I refer to a person who can solve this on! Opportunity to send a drawing on an example in the case of a three-phase motor with 36 slots and 12...
plpastore
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Aug 1, 2009
11:11 pm
12276
... That is Correct, but with the clock wise / counter clockwise windings it is easier to think of teeth rather than slots. -ryan...
ryanbiffard
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Aug 2, 2009
2:35 am
12277
Goedendag, ... Right from the start of this group, I had attachments disabled, to prevent viruses from spreading via the group. If you want to share pictures...
Ron van Sommeren
ron_van_somm...
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Aug 2, 2009
12:16 pm
12278
I am grateful for information and to avoid virus   Plpastore ... De: Ron van Sommeren <ron.van.sommeren@...> Assunto: [lrk] mod: attachments are...
plpastore
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Aug 2, 2009
5:43 pm
12279
I'll grab those off you if you still have them. How much would you figure to ship to Vancouver Island BC? Paul O'Rorke paul@......
Paul O'Rorke
pororke2000
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Aug 3, 2009
8:52 pm
Messages 12250 - 12279 of 12472   Oldest  |  < Older  |  Newer >  |  Newest
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