Hi, new here guys, not a total newb but need a bit of help IR2110 Inverter

It's not perpetual motion and I don't know how to reduce file size of pics but I will find out today, all I really want is to do is work out how to rig up the inverter but I think I am just going to make the VDD 5volt and the HIN and LIN signals all 5volt because in the sim that seems to work! also going to get real life wave and put it in the form of PWL file and run the sim with that!

Guess you don't have an AC magnetic simulation that tells about available generator power. In ths case, it may be simpler to determine it empirically by loading either one coil or the rectified DC voltage (if you already built the circuit) with a variable load resistor. In your simulation, the average rectifier out is about 400 mA, I guess much above actually available power. Inverter power consumption is caused by unrealistic high motor current.

ok can you explain a little further because I don't understand any of that perhaps with a spice file? I've built the inverter if that's what you are asking not wired up the coils yet, what's the bit about the variable load? and how would it help? may sound stupid but how do you find the power by loading a coil?

FvM said:

Guess you don't have an AC magnetic simulation that tells about available generator power. In this case, it may be simpler to determine it empirically by loading either one coil or the rectified DC voltage (if you already built the circuit) with a variable load resistor. In your simulation, the average rectifier out is about 400 mA, I guess much above actually available power. Inverter power consumption is caused by unrealistic high motor current.

Click to expand...

Welcome to the community! The IR2110 is a versatile high-voltage MOSFET and IGBT driver. What specific questions do you have about it? Are you looking for help with a particular application or need assistance with a specific circuit? Feel free to share more details about your project.

ok so there is an Arduino that provides the pulses at 50Hz with dead time of 2us I need to turn a fan oven motor that is 15watt so need to produce 20watt to cover losses, right now I am modelling the coils at 10v 128Hz with a substantial smoothing cap, but when I put it together I will reach a higher voltage! the transformer is 4:23 ratio, what I want to find out is the power that the four coils on either side in series and and then parallel the output of both sets so I repeat I want to find the power that they produce, the man FvM said I can confirm the result empirically but I don't understand the method of doing that, this is the motor I want to run hope I did the picture correct also want a suitable coil to represent the motor in spice. also my scope is an FNIRSI-1014D never used but going to try to get to grips with it!

so I asked chatgpt about the PWL and don't understand it, it goes on about defining a series of voltage points

"The FNIRSI 1014D comes with a built-in signal generator that supports various waveform outputs, including the PWL (Piecewise Linear) function. This function can be used to generate custom waveforms by defining a series of voltage points over time, allowing more complex signal outputs."

do you know how to record waveforms to make PWL files please?

I found this tutorial

I think this is the 1st LEGO Motor-Generator I've ever seen.

You may view power in any LTspice component with ^+ mouse click to see new thermal icon and plot then modify equation to get efficiency something like = "V1drop*Iin /V2drop*Iout" Generator or stored reactive power = -ve Pd, Load = +Pd

Shaded pole motors might not be high Eff., while max power transfer is at 50% effic.

D.A.(Tony)Stewart said:

I think this is the 1st LEGO Motor-Generator I've ever seen.

You may view power in any LTspice component with ^+ mouse click to see new thermal icon and plot then modify equation to get efficiency something like = "V1drop*Iin /V2drop*Iout" Generator or stored reactive power = -ve Pd, Load = +Pd

Shaded pole motors might not be high Eff., while max power transfer is at 50% effic.

Click to expand...

do you like the LEGO?
so my coils in spice are making 11watt rms which I think is good to be fair I don't know what drop in or out means or generator or stored reactive power means either could you perhaps give me a recap please

so do you recommend a motor that spins at similar speed 3200 RPM and same wattage 15watt @ 230v?

and BTW it is actually alt + left click for power

You should submit IP design to LEGO for a prize!

correction : Power Plot is ALT+ not ^=Ctrl-click

Voltage drop is the difference between two nodes e.g. V(N001-N005)

e.g. for FET the Rs of gate and Drains with capacitance causes power dissipation.
V(N001,N005)*Id(M1)+V(N003,N005)*Ig(M1)

Here is a random design of a half-bridge driving an LC load
Note the polarity of power for L shows negative Watts for stored reactive power ( or energy per cycle) while R is +ve Pd.




I'm still trying to figure out how to organize my libraries and include references to IRF devices in LT software. (*&^%&^$%@#) while suffering from jet-lag after 2 weeks on the other side of the planet.

sorry for ignorance, I don't get it here's my circuit perhaps you could shed some light on the workings of it
I think I get it a bit the blue is real voltage?
and plus I still don't get where you use the Ctrl + left click
can you explain in a bit more detail please Mr D.A.

D.A.(Tony)Stewart said:

You should submit IP design to LEGO for a prize!

correction : Power Plot is ALT+ not ^=Ctrl-click

Voltage drop is the difference between two nodes e.g. V(N001-N005)

e.g. for FET the Rs of gate and Drains with capacitance causes power dissipation.
V(N001,N005)*Id(M1)+V(N003,N005)*Ig(M1)

Here is a random design of a half-bridge driving an LC load
Note the polarity of power for L shows negative Watts for stored reactive power ( or energy per cycle) while R is +ve Pd.

View attachment 194122


I'm still trying to figure out how to organize my libraries and include references to IRF devices in LT software. (*&^%&^$%@#) while suffering from jet-lag after 2 weeks on the other side of the planet.

View attachment 194123

Click to expand...

I don't understand the graph can you explain another way please

so I've calculated the inductance by this equation L = Z/2pi*f
f is 50Hz
Z is impedance and the resistance is roughly 15% less than impedance so my coils have resistance of 2.5ohm and the inductance for it is 9.36mH
I'm using a step up transformer
so the primary resistance is 0.1ohm and the inductance works out to be 0.376mH
secondary resistance 3ohm inductance 11.24mH
I want to add the inductance to the 10volt ac supplies
also put the values for the transformer in and the resistances for the 10volt ac supplies and the output is not of the desired
now, I took the square root of both the 11.24 and 0.376 corresponding answers 3.3526 and 0.613 and that ratio is near enough 4 : 23 which is correct my transformer is 40 : 230
not sure what I am doing wrong

anyway on the practical side I'm in the process of putting the cores in the coils they're made from ferrite welding rods with the flux crumbled off done two 6 more to go!