help with IR2110 chips

Maglatron

Jul 12, 2023
2,025
Joined
Jul 12, 2023
Messages
2,025
thanks can you post a picture prtscn not got access to the ltspice on the computer I'm using, thanks Mr Alec_t
 

Maglatron

Jul 12, 2023
2,025
Joined
Jul 12, 2023
Messages
2,025
yes that's the correct inverter, but the 55vdc supply needs to be replaced by 8 coils in unison, all in phase 10vac. The north magnets on the machine I'm building are passing past the coils at once, followed by south, there are 8 coils there are 16 magnets either side of the flywheel and rotating about 8 turns a second so 16 * 8 = 128Hz looking for a modification maybe like this but all coils in phase and there are 8 coils producing 10 volts BUT when I hook it up in the program it doesn't work the way I'd like it to..1726433277320.png
 

Maglatron

Jul 12, 2023
2,025
Joined
Jul 12, 2023
Messages
2,025
yes that's the correct inverter, but the 55vdc supply needs to be replaced by 8 coils in unison, all in phase 10vac. The north magnets on the machine I'm building are passing past the coils at once, followed by south, there are 8 coils there are 16 magnets either side of the flywheel and rotating about 8 turns a second so 16 * 8 = 128Hz 1726433502830.png
 

Alec_t

Jul 7, 2015
3,817
Joined
Jul 7, 2015
Messages
3,817
If the coils are all in phase then why do you show V1-V4 with 90* phase shifts in the sim?
 

Maglatron

Jul 12, 2023
2,025
Joined
Jul 12, 2023
Messages
2,025
That's an old image I found!! basically I want to have eight coils that are all in phase and I'm unsure of how to wire them up, also for the Hz the flywheel spins around 8 times per second and has 16 magnets so would one cycle of the frequency be peak to peak and so would be have 8 cycles * 8 turns per second equal 64Hz? can you provide a image of a spice model to show how the 8 coils are wired up to the inverter please? getting my laptop back soon so will be on the forum a lot more and so we can get this all worked out but basically when I did have my laptop and run the sim with the eight coils rigged up the same way as above the voltage tapered off to zero and I don't know how to fix it so that it stays at a steady voltage!!
 
Last edited:

Alec_t

Jul 7, 2015
3,817
Joined
Jul 7, 2015
Messages
3,817
If all the coils are passed by a N pole at the same time then their outputs are in phase. You could wire them all in parallel and have 10V output at 8 times the current capability of a single coil, or you could wire them all in series and have 80V output with the current capability of just a single coil. I can't visualise what the waveform is going to look like.

Edit:
.... but I guess it will look like in this link, with both 64Hz and 128Hz components.
 
Last edited:

Maglatron

Jul 12, 2023
2,025
Joined
Jul 12, 2023
Messages
2,025
so I'm back on my laptop and will be around a lot more. so I will make a the spice model and hopefully we can work out what needs to happen and what to change
 

Maglatron

Jul 12, 2023
2,025
Joined
Jul 12, 2023
Messages
2,025
I don't have the IR2110g, only IR2110! could someone post it or point me to the original post it was in please
 
Last edited:

Maglatron

Jul 12, 2023
2,025
Joined
Jul 12, 2023
Messages
2,025
better view.. I'm open to suggestion! Need help maybe we could come to compromise parallel two sets of four coils and then put those two sets into series??
1726677231592.png
 
Last edited:

Maglatron

Jul 12, 2023
2,025
Joined
Jul 12, 2023
Messages
2,025
that link you provided about the waveforms is interesting is it possible to model that in spice I need a nudge right now because I am stuck so I realize this has been explained but I couldn't understand why the waveform does not follow the magnetic flux plot and why the EMF follows the second plot. Okay I get it now, never mind! is it possible to recreate in spice?? BUT in that design the core is made of wood and not a ferrous material! and I really think that the wave would be more sinusoidal to be honest 1726686114304.png
 
Last edited:

Maglatron

Jul 12, 2023
2,025
Joined
Jul 12, 2023
Messages
2,025
hmm cool, I'm having trouble with finding the period and frequency! the wheel turns 8 times in a second there are 16 magnets north south. did you see post 692? I asked chatgpt about the frequency, it says 128Hz "because each rotation produces 16 magnetic field changes" and the rotational frequency * No of magnets = frequency, just added that bit so people can follow! period is 1/f in this case = 0.00781 seconds
If you come up with that "quickly" then I'd love to see what you could do with a bit more time!!! I'll have pics of the machine soon
 
Last edited:

Maglatron

Jul 12, 2023
2,025
Joined
Jul 12, 2023
Messages
2,025
is the waveform that important? just want to know how to rig the coils up please, thanks
 

Maglatron

Jul 12, 2023
2,025
Joined
Jul 12, 2023
Messages
2,025
okay can we start by getting a steady voltage from eight 10 volt ac waves in phase? I think that that is a good place to start!1726741258323.png
 

Maglatron

Jul 12, 2023
2,025
Joined
Jul 12, 2023
Messages
2,025
I've been trying to get the chatgpt to figure it out it says I can use a behaviour voltage source and says that I need to add a harmonic of 256 and a third harmonic of 348 but it cant come up with the correct waveform! anybody know about that?? this doesn't work but I'm guessing that it's on the right track1726748835233.png1726748919958.png
 
Last edited:

Alec_t

Jul 7, 2015
3,817
Joined
Jul 7, 2015
Messages
3,817
The negative nodes of your voltage sources in the post #698 sim are floating, so no surprise the output tends to zero.
 
Top