3 Phase Induction Motor to Permanent Magnet Generator, Part 3: Rotor Prep

okay first I want to start by sending a big thank you to mr. Joe Malevich for hating the audio quality of my videos so much that he sent me an external mic I got it the other day and I really liked the thing it does not however work with my phone I'm working on a way to try to figure that out it works great with my GoPros though so and that's what I like to use outside more often than not I'm definitely gonna get a lot of use out of it thank you very much everybody else I'm gonna put a link to his channel down in the description he has a lot of really great videos very fascinating stuff if your interest in this kind of thing it's definitely worth sifting through his those uploads okay this is our rotor this is the third part of our conversion we're gonna start setting this thing up for magnets today now if you wanted to get the most out of this this motor in general you're gonna start from scratch you're gonna have a new shaft made you're gonna have a new rotor made you're gonna press as much magnet material onto it as absolutely possible second best step is going to be cutting heavy slots in this and again squeezing as much magnet material as you possibly can onto this rotor going either way you're gonna require by either machining abilities or you're gonna have to know a machinist who can hook you up or you gonna pay quite a bit to have you know someone make this stuff for you so what we are doing instead I what I want to focus on is doing this in a way that anybody can do it and we're going to use these these are m-52 grade neodymium magnets and what we're going to do is we're going to get at least a hundred of the things pressed on here in small bores just like snow [Music] and we're going to try and stick with the sloped pattern because if there is any caulking it'll help with it although I figure this thing it's gonna be big enough that if it does cog it's not gonna matter much we're gonna cram as many of these magnets on here as we possibly can we can do that's four core four yeah four pull motor which means that we need four sets of these magnets all the way around a north-south north-south and ideally we just cover the whole surface with them I don't really have enough magnets for that I think I miscalculated a little I thought I'd only be able to put twenty four magnets per Pole and it turns out that I could put 28 so what we're going to do twenty four magnets per Pole which will be four rows we'll see how wide that'll be [Music] all right so basically we're gonna have this whole grid area just like this filled with these magnets and there's going to be four sets of them this is not going to be the most ideal way to get the maximum amount of power out of this motor what is gonna be is a way that anybody with a drill can get something out of it and the motor is big enough that I'm willing to bet that the [Music] the output would be surprising so we'll see okay now step one is always making sure but whichever drill bit you're using that it's actually going to create your magnets are gonna fit so we're gonna test it out on a block of wood and believe me you always want a hole that goes all the way through because after you test fit it you need to be able to get the magnet down now generally precision is the best way to go but for this particular project we are we're gonna go with whatever fit the goal here is not extracting the most power possible out of this rotor if we wanted to do that the only way to really go about it is to use a custom rotor big magnets and so forth like I said what we're wanting to shoot for here is something that anybody with the drill can do and now something to keep in mind these rotors they're made out of laminate with very thin laminations and whenever they start cutting they cut pretty fast and sloppy just something to be prepared for just in the spirit of things I'm even gonna eyeball it okay now I'm using a drill press just drill press it has a gauge on the side where it will tell me how far down that board and what we're wanting to do these magnets are a quarter-inch thick we want the surface of the magnet to be flush with the surface of the laminations so we want to go down a quarter of an inch now almost every drill bit out there has got a point the tapers and you're gonna have to you know overcome that with my drill press by our what I'm gonna do is I'm going to drill a test here that just gets me right past the taper on the end and then from there I'm gonna use my gauge on the side to mark how far down and quarter inches that way I should be pretty flush on the sides it'll be a little bit deeper in the very middle but on the sides it should be what this is big enough that it won't matter a whole lot the you know the curvature they'll get me pretty close if you don't have a drill press this is something that you should be able to do with with a hand drill but you'll need to get something to mark your depth because you want film if nothing else to be uniform away we go and there's stuff to weigh cuts it's soft and it leaves little burrs all around it I make sure my depths where I want it to be okay from there I want to go quarter inch deep [Music] [Applause] [Music] perfect that is what we wanted to look like it's gonna be flush on the sides they'll be just a touch deeper across the middle but on the sides it's going to be flush with the surface of this stuff the laminations all right one down 95 to go [Music] all right I'm sure everybody out there who has any machining experience whatsoever you know have shaking their fingers at me because we're not we're not doing anything special here we're doing this mostly eyeballing things you know it's not gonna be the most precise setup but again the whole idea here anybody with a drill should be able to do this now this my first run here was mostly exploratory I wanted to see how many I could comfortably get in a row started on a on a sixth one on the end but it just tried to walk off of all these laminations so we're not going to worry about six we're gonna do five in a row and then they're gonna be staggered you're gonna have these five here and then the next row is gonna start here and it's gonna you know zigzag a little bit also doing five now I got a hundred magnets for pole motor I might be able to put you know four sets of 25 we're gonna take a look at this we started on this one might not be able to get 25 no no maybe okay so the max run this here 15 20 maybe I'll have to do some math if we do 25 drilling 100 holes this thing will be there will be no blanks in between poles which be I'll be good all right so 95 more holes to drill [Music] [Music] [Applause] [Music] [Music] [Music] [Music] [Applause] all right and that's 100 holes and I'm tired I am gonna be annoyed whenever I come out and see this in the morning and I was not wrong again I can definitely see things that annoy me now that didn't annoy me last night and the first set of holes I did this one they all look neat spaced out this was the second not so much this one looks like I didn't care at all this one I've got a run the six holes it's supposed to be five by five I got six and more or less for okay well in the end this is not meant to be the most efficient our best way to do this it was meant to be a way that anybody can do it if you're drilling these out by hand and you're gonna make mistakes there's gonna be some problems so I guess that just makes it a little bit true to the experiment all right so stay tuned the next video we'll be cleaning it up and all the grease and all off of it get the magnets fixed set it in the cage you'll see what it does if you haven't already please subscribe to get updates and thanks for watching

Channel: Toys for Watts

Views: 255,934

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Id: EEB_grWb27I

Length: 15min 16sec (916 seconds)

Published: Sun Mar 15 2020