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Pure sine wave Inverter

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abdulwahababid

abdulwahababid

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Hi, I need circuit diagram and data of Pure Sine Wave Inverter.12v DC to 220v AC of 50Hz.
I'm going to do this and also plz explain tha schematic.
 

search this forum. there is one by tanar that is coded in c. there is another coded in assembly language.
 

PURE sine wave inverter is an ANALOGUE contraption :smile: consisting of 50Hz sine wave oscillator and amplifier stage, driving output power transformer.
Everything else is just approximation.
 

ZASto said:
PURE sine wave inverter is an ANALOGUE contraption :smile: consisting of 50Hz sine wave oscillator and amplifier stage, driving output power transformer.
Everything else is just approximation.
Click to expand...
ABSOLUTELY NOT!!
A pure sinewave inverter using an analog amplifier is a heater, not an inverter. It would be extremely hot and waste half of the battery power.

Instead, a pure sinewave inverter uses a high frequency PWM circuit that quickly switches on and off so its heating is low and is modulated by a low frequency low power sinewave then there is a small lowpass filter to provide and smooth the low frequency sinewave output.
 
Audioguru said:
ABSOLUTELY NOT!!
A pure sinewave inverter using an analog amplifier is a heater, not an inverter. It would be extremely hot and waste half of the battery power.

Instead, a pure sinewave inverter uses a high frequency PWM circuit that quickly switches on and off so its heating is low and is modulated by a low frequency low power sinewave then there is a small lowpass filter to provide and smooth the low frequency sinewave output.
Click to expand...

You are right Audioguru. i just want the schematic of data to which is already practiced by some one and i gonna be to improve its working.
 
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abdulwahababid said:
I had studied your pdf it was awesome as it includes the values of the components too. But my requirement is to generate 220V,50Hz AC instead 60Hz from 12V DC wattage minimum 1000watt
Click to expand...

Minimum 1000W ? :shock:

What battery you plan to fry on 1KW ? At 1KW amperage is around 84A (in best best theoretical way, usually add 5-10A more).

12V system is not good for over 500W of power.
 

I am using car battery 12V. I wanna do this as my FYP if you have 500W 50Hz 220V circuitry...???
 

Car battery is not strong for that job, its starter type, high amperage on starting for several seconds. You cant drain high amperage from starter on longer time, lead plate will curve, and you will get bad battery. And discharge rate should be minimum C/10 on longer time for longer life with cycling 30% of battery capacity.



You need huge battery capacity or several in parallel to get higher capacity of battery bank or better is to go on higher voltage such as 48V, that will lower current in system.
 

so what kind of battery I should use for this purpose. Li-ion or polymers are most expensive and i think so they are not commercialized for this kind of job.
 

You can use Lead Acid but not one battery and not car capacity range, use higher 100Ah and higher, or best is to use deep cycle batteries in bank for cycling. Deep cycle bat are constructed for discharging in C/20. Battery bank must be appropriate calculated according to needs and currents.
 

Its humble request to share your valueable collection. I'm very interested in doing this task. I'll be waiting for yourr share.

Requirement of task is:

Generate 220v AC of 50Hz frequency.

:wink:
 

Do you want explicit pure sine or can be modified sine wave? For modified there is higher number of projects.
 

Audioguru said:
ABSOLUTELY NOT!!
A pure sinewave inverter using an analog amplifier is a heater, not an inverter. It would be extremely hot and waste half of the battery power.

Instead, a pure sinewave inverter uses a high frequency PWM circuit that quickly switches on and off so its heating is low and is modulated by a low frequency low power sinewave then there is a small lowpass filter to provide and smooth the low frequency sinewave output.
Click to expand...

I know exactly that the PURE sine wave is a heater :smile:. But, that is PURE sinewave inverter. Everything else is just a (semi)digital approximation. As of cleanliness of the output waveform, only the amplifier counts (with low THD).

Even the D class amplifiers are only vague approximation of good ol' linear ones. At least my ears can easily make distinction. Soooo. Digital vs Amalogue...
 

i am also interested in creating an inverter to be used as a ups for my computer and home automation equipment. except i am in the u.s so any 60hz 120v schematics or designs are welcomed as well.

and sorry im not trying to steal this thread for my own purposes, just very interested in this topic and it seemed to suit my reqs pretty well.
 

phinsil6 said:
i am also interested in creating an inverter to be used as a ups for my computer and home automation equipment. except i am in the u.s so any 60hz 120v schematics or designs are welcomed as well.

and sorry im not trying to steal this thread for my own purposes, just very interested in this topic and it seemed to suit my reqs pretty well.
Click to expand...


www.wpi.edu/Pubs/E-project/Available/E.../MQP_D_1_2.pdf

Try this one. This circuit is for 60Hz &120v
 

Hi, is this what you looking for?
 

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  • sinus inverter.pdf
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