help with IR2110 chips

[Maglatron]

ok so how do I find the inductance and resistance I mean I can just measure the resistance I just read you edit where did you aquire the 1.3H and the 50ohm

Judging by this article, accurate simulation of a shaded-pole motor would be tricky. I'd just use an inductor with appropriate inductance and resistance parameters.

Edit:
Try 1.3H, 50 Ohms

 

[Maglatron]

if I get the actual resistance can you determine the inductance through a relationship equation?

 

[Maglatron]

power consumption = 15watt
resistance of coil = 24ohm
frequency of the AC = 50Hz
current draw = 0.0652Amp
voltage = 230volt
can you find the inductance with these values?
if so can you tell me the steps to do it?? thanks

 

[Maglatron]

yay, nay?

 

[Maglatron]

found this Use the formula L = R * sqrt(3) / (2 * pi * f) and if I substitute R for 24ohm and frequency 50 I get 0.132H, but that is not good for the sim to be honest!

 

[Maglatron]

How To Measure Inductance - Daycounter

found this site but the values of 1.3h and 50 ohm give better results
tell me your thoughts on this

 

[Maglatron]

power consumption = 15watt
resistance of coil = 24ohm
frequency of the AC = 50Hz
current draw = 0.0652Amp
voltage = 230volt
can you find the inductance of the motor with these values?
if so can you tell me the steps to do it?? thanks

 

[Maglatron]

should be getting the results and figures of the tranny today too, with a bit of luck!

 

[Maglatron]

so the guy, gordon emailed back this is exactly what he wrote
model VTX-146-160-115
primary inductance = 9H (100Hz, 0.3v)
secondary inductance = 130mH (100Hz, 0.3v)
primary resistance = 12ohms
secondary resistance = 0.14ohms + 0.14ohms
interwinding capacitance = 443pF

can I use these numbers for 50Hz

 

[Maglatron]

the blue line represents the power dissipation of the L3 coil (motor) with the parameters 1.3H and 50ohm red is the output of the tranny dark blue and green are the osccilations going into the tranny! the power consumtion by the motor is way above the 15watt that it should be!! thanks

 

[Maglatron]

nobody around today??

 

[Alec_t]

where did you aquire the 1.3H and the 50ohm

Trial and error in a sim, with the 'motor' driven by a 50Hz sine-wave.

if I get the actual resistance can you determine the inductance through a relationship equation?

Nope.

can you find the inductance of the motor with these values?

Nope. Lamination dimensions and permeability, plus the way the coil is wound (layers, size, wire gauge) all affect inductance.

can I use these numbers for 50Hz

Yes.

 

[Maglatron]

hey up Alec_t, ok so I put in the numbers and now I just need to model a motor for 15w could you give it another go please the wattage that it draws I don't even understand but it's not linear and I think it draws more than 15 watt

 

[Maglatron]

so I'm running square wave not sine wave, is there an alternative figure that I can use for square wave please, thanks
also where do I put the interwinding capacitance value
and how on earth do you change the scale in the simulation window of current power and voltage respectivly

 

[Maglatron]

so the voltage drops to around 20volts from out put of rectifier into the main circuit in my schematic and I dont know how to keep it around 30volts!!!

 

[Maglatron]

this is what I get

 

[Maglatron]

I need it to stay at at least 30volts!!

 

[Maglatron]

so this one works 1000x better not even sure what I have changed!!

 

[Alec_t]

not even sure what I have changed!

You reduced the internal resistance of your voltage sources V1-V4 from 54 ohms to zero! All those Ohms were starving the rest of the circuit of current.
But now the modelled motor is dissipating about 65W.

 

[Maglatron]

alright so I wanted to put in the Ohms of the coils was I putting it in the right place in the program? also how do you change tha scale of the resistor amps and watts please? do I treat these voltage sources different to coils with magnets passing because they are different in some way? how do you get 65watts from this